Hart Platforms LLC d/b/a Harthos • Last updated August 20, 2026 • Effective August 20, 2026
These Terms of Service ("Terms") form a contract between you and Hart Platforms LLC, a Texas limited liability company doing business as Harthos ("Harthos," "we," "us," "our"), located in Dallas, Texas.
By creating an account or using the Harthos application (the "Service"), you accept these Terms and our Privacy Policy, which is incorporated by reference. If you do not agree, do not use the Service.
Harthos sponsors and administers every Challenge offered through the Service. We may update these Terms as described in Section 26.
Challenge means a skill-based fitness competition in which competitors pay an Entry and compete on measured physical performance.
Entry means the amount you pay to enter a Challenge from your Wallet.
Entry Pool means the sum of all competitor Entries in a Challenge.
Platform Fee means the fee we deduct from the Entry Pool at settlement, as set out in Section 9. No Platform Fee is assessed unless and until a Challenge settles with a qualifying result.
Prize Pool means the Entry Pool less the Platform Fee. This is the amount distributed to winners.
Wallet means the balance of funds we hold for you within the Service.
Connected Source means a device, application, or service you authorize to supply performance data, including Apple Health, Apple Watch, Google Health Connect, Garmin, Whoop, and Fitbit.
You must be at least 18 years old, or older where your jurisdiction sets a higher minimum age for skill-based competitions with entry fees.
Paid Challenges are available only in jurisdictions we designate as eligible, and the jurisdictions we designate may change without notice. The application will tell you before you enter if paid Challenges are not available in your location. Each time you enter a paid Challenge, you represent that you are physically located in an eligible jurisdiction. We use IP address and device signals to verify location, and we may block access to or void entries made from ineligible locations. The Service is offered only within the United States.
If we void an entry solely because you joined from an ineligible jurisdiction, we return your Entry in full and charge no Platform Fee. This does not apply where you used a VPN, proxy, or similar tool to misrepresent your location, in which case Section 11 governs.
Employees, contractors, officers, advisors, and members of their immediate households may not enter paid Challenges except in internal tests we designate as such.
You may hold one account. Provide accurate information, keep your credentials secure, and notify us promptly of unauthorized use. You may not sell, transfer, lend, or share your account.
Harthos is a skill-based fitness competition platform. Every result is determined solely by the competitor's own measured physical performance, verified through connected health platforms including Apple Health, Google Health Connect, Garmin, Whoop, and Fitbit.
You control the outcome through your effort, training, and preparation. No element of any result depends on chance, and no result depends on the performance of anyone other than the competitors registered in that Challenge.
Harthos does not compete in Challenges, does not hold any interest in a Prize Pool, and gains nothing from any particular competitor winning or losing. Our only compensation is the Platform Fee disclosed in Section 9. We accept entries only from registered competitors, and only for their own performance.
Challenge results are determined from data supplied by your Connected Sources. You are responsible for the following, and a failure in any of them is not by itself grounds for a refund or an extension:
If you have more than one Connected Source, you designate a governing source for each Challenge before entry, and that source is authoritative for that Challenge. Where sources disagree, the governing source controls. You may not change the governing source after a Challenge begins.
Manually entered activity is excluded from Challenge scoring. Attempting to use it for Challenge credit violates Section 10.
Consumer wearables are not measurement instruments of guaranteed accuracy. Readings differ between devices and over time, and you accept these limitations as a condition of participating. If a Connected Source suffers an outage that materially affects a Challenge, Section 7 governs the remedy.
Formats are: head to head (2 competitors), Group (3 to 9), and Tournament (10 or more). Free friend Challenges involve no money and no fee.
Each Challenge displays its metric, duration, entry window, minimum competitors, success criteria, prize structure, and applicable fee before you confirm entry. Those displayed terms govern that Challenge.
The minimum Entry is $5 and the maximum Entry is $500 per Challenge. We may also apply aggregate limits across a rolling period. You may set lower personal limits under Section 15.
Winners are determined by the Challenge's stated criteria using governing source data. Prize Pool distribution follows the prize structure displayed at entry. Per-winner prizes are rounded down to the nearest cent, and any rounding remainder is retained by us.
Where the Challenge rules do not provide a tiebreaker, tied competitors split the Prize Pool equally. No competitor receives less than their Entry as the result of a tie. Where an equal split would return a tied competitor less than they entered, no Platform Fee is charged on that Challenge and Entries are returned in full.
If no competitor meets the Challenge criteria, all Entries are returned to competitor Wallets and no Platform Fee is charged. We do not retain the Entry Pool.
If a Challenge does not reach its stated minimum by the close of its entry window, it is cancelled, all Entries are returned in full, and no Platform Fee is charged.
Before a Challenge begins, you may withdraw from the Challenge and your Entry is returned in full. Once a Challenge begins, your Entry is committed and is not refundable if you stop competing, and it remains in the Entry Pool for the remaining competitors.
We may void a Challenge, or a day within it, where a verified platform outage, a Connected Source outage, or a data integrity failure materially affects the result. On a void, Entries are returned and no Platform Fee is charged.
Where an outage affects only some competitors, we may instead void those competitors' entries and settle the Challenge among the remainder, or void the Challenge in full, whichever more fairly reflects the competition. We will state the basis for the decision.
If a competitor is suspended, terminated, or disqualified while a Challenge is in progress, the Challenge continues among the remaining competitors and the removed competitor's Entry is treated under Section 11.
If a change in law, regulatory guidance, or a determination by a governmental authority requires us to suspend paid Challenges in your jurisdiction, we will close entry immediately and, for any Challenge already in progress in that jurisdiction, void the Challenge for affected competitors, return their Entries in full, and charge no Platform Fee. Where a Challenge includes competitors in other jurisdictions, we will either settle it among the unaffected competitors or void it in full, whichever more fairly reflects the competition. We will notify affected competitors in the application and by email, and your Wallet balance remains withdrawable in the ordinary course.
Deposits are processed by Stripe in preset amounts of $25, $50, $100, and $200, by card, Apple Pay, or bank transfer (ACH). Your Wallet is always credited the full amount you select. Any processing fee is disclosed before you confirm.
Funds deposited by bank transfer are available for entering Challenges immediately but are not available for withdrawal for five business days after the deposit settles. Bank transfers can be returned after they appear to complete. If a deposit is returned, reversed, or disputed after you have entered a Challenge or withdrawn against it, you owe us that amount, and we may debit your Wallet, offset it against pending winnings, suspend your account, and pursue the balance.
Withdrawals go to your linked bank account or debit card. Standard bank transfer is free and takes 2 to 3 business days. Instant transfer to a debit card costs 1.5% with a $0.50 minimum. The minimum withdrawal is $20, except that we waive the minimum when you close your account so that no balance is stranded. Funds committed to an active Challenge cannot be withdrawn.
We do not and will not charge inactivity, dormancy, or account maintenance fees of any kind.
We may apply limits on withdrawal frequency and amount for fraud and compliance purposes. Limits may delay a withdrawal; they never reduce what you are owed. We may also delay a withdrawal pending identity verification, a fair play review, or a compliance review, and we will complete such reviews within a reasonable period and tell you if more time is needed.
You are responsible for the payout details you provide. We are not liable for payouts misdirected because of details you entered incorrectly. Reversal or trace fees charged by your bank for incorrect details may be deducted from your Wallet.
Wallet balances are subject to state unclaimed property law. Where required, we will attempt to contact you at your registered email address before reporting and remitting a balance to the appropriate state authority.
| Format | Competitors | Platform Fee | Fee cap per Challenge |
|---|---|---|---|
| Friend Challenge, no entry fee | Any | None | Not applicable |
| Head to head | 2 | 3% of Entry Pool | $10 |
| Group | 3 to 9 | 6% of Entry Pool | $50 |
| Tournament | 10 or more | 8% of Entry Pool | $250 |
The fee rate is determined by format and competitor count only. It is never affected by whether you know your opponent. The rate for head to head Challenges is identical whether the opponent is a friend or matched by us.
Fee caps apply to the Challenge as a whole, not per competitor.
On card deposits under $100, the processing fee is added and displayed before you confirm. On card deposits of $100 or more, and on all bank transfer deposits, we absorb the processing fee.
Every entry, deposit, and withdrawal screen shows the full breakdown before you confirm.
We may change fee rates and caps prospectively. Material changes take effect no less than 30 days after notice, during which you may withdraw your full available balance under the existing terms. Changes never apply to Challenges already created.
You agree to compete honestly, using only physical activity that you personally perform. The following are prohibited:
We may ask you to provide reasonable verification of your activity, including device data and health records, within 48 hours of the request. If you cannot respond in time for a reason outside your control, tell us before the deadline and we will extend it. Failure to respond without seeking an extension may result in forfeiture of the affected Entry and any related winnings.
We may void progress, an entry, or a result where we have a good faith basis to believe it resulted from conduct described in Section 10, from implausible performance patterns, or from coordination between accounts.
Where we void under this Section, you forfeit the affected Entry and any related winnings, whether pending or already paid, and we may recover paid amounts from your Wallet or pursue them directly. We may suspend or terminate your account and bar you from re-registering.
Automated systems may flag activity for review, but no forfeiture, suspension, or voided result takes effect on an automated determination alone. A person reviews every case before action is taken, and we will tell you the basis for the decision.
We may reverse a settled result within 30 days of Challenge completion where cheating is confirmed after the prize has been paid. This is the same window in which you may raise a dispute under Section 12.
If you believe a result is wrong, flag it in the application within 30 days of Challenge completion. We will acknowledge your report within 3 business days and provide a decision within 10 business days of acknowledgment. Where a review requires more time, we will tell you before that period ends, explain why, and give you a revised date.
If you disagree with a result decision, an anti-cheat determination, a forfeiture, or a suspension, you may appeal in writing to appeals@harthos.app within 14 days of being notified. A reviewer who was not involved in the original decision will consider the appeal and respond within 20 business days. Where more time is required, we will tell you before that period ends and give you a revised date. An appeal decision is final within the Service and does not limit your rights under Section 24.
If a disability or an accessibility barrier prevents you from meeting a deadline in this Section, contact support@harthos.app and we will extend it and assist you directly.
Contact us before disputing a charge with your card issuer or bank. We will resolve legitimate billing problems in good faith.
Nothing in these Terms limits any right you have under law to dispute a charge with your card issuer or bank. Where a chargeback is initiated on a deposit you authorised and received, we may suspend your account pending review, offset the disputed amount against your Wallet, and recover that amount together with any associated fees and reasonable costs. We will not forfeit Wallet funds beyond the disputed amount and those documented costs.
We may require identity verification before processing withdrawals above certain thresholds, before reinstating a suspended account, or where law requires it. We may require that the name on your payout destination match the name on your account.
Using the Service to move value between people is prohibited, including deliberately losing a Challenge to transfer funds to a coordinating competitor, funding an account with an instrument not in your name, and structuring entries or withdrawals to obscure the source or destination of funds. We may freeze funds pending review and report suspicious activity to the relevant authorities.
You are responsible for taxes on your winnings. Where reporting thresholds are met, we may collect a Form W-9 and issue information returns. Withdrawals may be delayed pending tax documentation. We do not provide tax advice.
Harthos attaches money to physical performance, which can create pressure to push past what is safe. We would rather you compete for years than win once.
You may set a per-Challenge entry limit and a weekly entry limit in your settings. A decrease takes effect immediately. An increase takes effect after a 24-hour delay.
You may suspend your ability to enter paid Challenges for 30, 90, or 180 days, or indefinitely, from your settings or by emailing support@harthos.app. During self-exclusion you may still withdraw your balance and use the free features of the Service. We will not reverse a self-exclusion before its stated end date.
Do not compete while injured, unwell, or against medical advice. No Challenge and no Prize Pool is worth an injury. Stop immediately if you experience pain, dizziness, chest discomfort, or other warning signs. If you are struggling with the financial or compulsive aspects of competing, contact support@harthos.app and we will help you set limits or step away.
Harthos is a fitness competition platform, not a medical service, and we have no knowledge of your health conditions.
We do not provide medical advice, diagnosis, or treatment. Health scores and activity metrics are provided for competition and informational purposes only and are not suitable for medical use. Consult a healthcare professional before beginning any fitness program. You participate at your own risk and voluntarily assume the risks of physical activity.
You own what you post. You grant us a non-exclusive, worldwide, royalty-free, sublicensable license to use, display, reproduce, and distribute your display name, profile image, and Challenge results in connection with operating and promoting the Service. Leaderboards display your display name, image, and record to other users of the Service.
We will not use your individual-level health data in advertising or public marketing, and we will not sell it. See the Privacy Policy.
You may not post content that is unlawful, infringing, harassing, hateful, sexually explicit, or that impersonates another person. We may remove content and reclaim display names that violate these Terms. Feedback and suggestions you send us become ours to use without obligation or compensation.
The Harthos name, stag mark, logos, application design, and content are owned by Hart Platforms LLC and protected by intellectual property law. You may not copy, modify, distribute, reverse engineer, scrape, or create derivative works from the Service without our written consent.
If you believe content on the Service infringes your copyright, send a notice containing the information required by the Digital Millennium Copyright Act to legal@harthos.app with the subject line "DMCA Notice." We terminate the accounts of repeat infringers in appropriate circumstances.
The Service relies on third parties including Stripe, Google Firebase and Google Cloud, Cloudflare, Apple, and the Connected Sources you authorize. Your use of those services is governed by their own terms. We are not responsible for their availability, accuracy, or acts. Reference to a third party does not imply endorsement.
These Terms are between you and Hart Platforms LLC only, and not with Apple Inc. Apple is not responsible for the Service or its content and has no obligation to furnish maintenance or support. If the application fails to conform to any applicable warranty, you may notify Apple and Apple will refund the purchase price, if any; to the maximum extent permitted by law, Apple has no other warranty obligation. Hart Platforms LLC, not Apple, is solely responsible for addressing any claim relating to the Service, including product liability, regulatory conformity, and consumer protection claims. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you. You must comply with the App Store Terms of Service and applicable Usage Rules.
Apple does not sponsor, endorse, or administer Harthos or any Challenge in any manner, and provides no prizes.
If we decide to discontinue the Service, we will give at least 30 days' notice, stop accepting new entries, allow Challenges already in progress to settle or void them and return Entries, and keep withdrawals open throughout. Wallet balances remain your funds and are returned to you. This obligation survives any termination of these Terms.
The Service is provided on an "as available" basis. Outages, maintenance, network failures, capacity limits, and third-party service failures may affect Challenge operation, settlement, or prize distribution.
We are not liable for any failure or delay caused by events beyond our reasonable control, including natural disasters, war, terrorism, civil unrest, pandemic, government action, labor dispute, fire, flood, power or telecommunications failure, third-party service failure, and cyberattack. Where such an event materially affects a Challenge, Section 7 governs the remedy.
You may delete your account in the application. Before deletion, withdraw your Wallet balance and allow active Challenges to complete. A 30-day grace period applies, during which you may cancel the request and restore your account. Financial records are retained as described in the Privacy Policy.
We may suspend or terminate your account for violation of these Terms. On termination for cause, forfeiture is limited as described in Section 11, and verified winnings from legitimate participation will be paid. We will not confiscate legitimately held Wallet funds as a penalty.
If you delete your account while a Challenge is in progress, you remain bound by the terms applicable to that Challenge until it concludes.
THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTY OF ANY KIND. TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED OR ERROR FREE, OR THAT DATA FROM ANY CONNECTED SOURCE WILL BE ACCURATE, COMPLETE, OR TIMELY.
TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE ARE NOT LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR LOST PROFITS OR LOST DATA.
OUR TOTAL LIABILITY FOR ANY CLAIM IS LIMITED TO THE GREATER OF (A) THE TOTAL OF ALL PLATFORM FEES DEDUCTED FROM CHALLENGES YOU ENTERED, PLUS ANY OTHER AMOUNTS YOU PAID US, IN THE TWELVE MONTHS BEFORE THE EVENT GIVING RISE TO THE CLAIM, OR (B) $100.
Some states do not allow the exclusion of implied warranties or the limitation of incidental or consequential damages, in which case these provisions apply to the fullest extent permitted.
You will defend and indemnify Hart Platforms LLC and its officers, employees, and agents against third-party claims, damages, and reasonable legal fees arising from your use of the Service, your content, your violation of these Terms or of third-party rights, and any chargeback or fraudulent activity you initiate. This does not apply to the extent a claim arises from our own negligence or willful misconduct.
Before initiating arbitration, contact us at legal@harthos.app with a description of the dispute and the relief you seek. We will work in good faith to resolve it for 45 days. This is a condition precedent to arbitration and applies equally to both of us.
If we cannot resolve the dispute informally, any dispute arising out of or relating to these Terms or the Service will be resolved by binding individual arbitration administered by the American Arbitration Association under its Consumer Arbitration Rules. The Federal Arbitration Act governs the interpretation and enforcement of this Section. A single arbitrator will decide. We each waive the right to a jury trial.
Arbitration will be held in Dallas County, Texas, or, at your election, by telephone, by written submission, or in the county where you reside. The arbitrator may award any relief a court could award to you individually.
We will pay all AAA filing, administration, and arbitrator fees for any claim of $10,000 or less, other than the initial filing fee that AAA rules require you to pay. Where you demonstrate that arbitration costs would be prohibitive compared with litigation, we will pay as much of your filing and hearing fees as the arbitrator determines is necessary to prevent the arbitration from being cost-prohibitive.
WE EACH AGREE TO BRING CLAIMS AGAINST THE OTHER ONLY IN AN INDIVIDUAL CAPACITY, AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY CLASS, CONSOLIDATED, OR REPRESENTATIVE PROCEEDING.
The arbitrator may not consolidate the claims of more than one person and may not preside over any class or representative proceeding. If this waiver is held unenforceable as to a particular claim, that claim will proceed in court and this entire arbitration Section will not apply to it, while remaining in effect for all other claims.
If 25 or more similar claims are filed against us by or with the assistance of coordinated counsel, the claims will be arbitrated in staged batches of no more than 50, with the results of each batch informing resolution of the remainder. All applicable limitations periods are tolled for claims awaiting assignment to a batch.
The arbitrator decides all issues relating to the interpretation, applicability, enforceability, and formation of this arbitration agreement, except that a court decides whether the class action waiver is enforceable and whether a claim falls within the exceptions below.
Either of us may bring a qualifying claim in small claims court, and either of us may seek injunctive relief in court to protect intellectual property rights.
You may opt out of this Section within 30 days of first accepting these Terms by emailing legal@harthos.app with the subject line "Arbitration Opt-Out" and including your name and account email address. Opting out does not affect any other part of these Terms and will not disadvantage you in any way.
These Terms are governed by the laws of the State of Texas, without regard to conflict of law rules. For claims not subject to arbitration, the state and federal courts located in Dallas County, Texas have exclusive jurisdiction, and we each consent to venue there. Nothing in this Section deprives you of the protection of mandatory consumer protection provisions of the law of the state in which you reside.
We may modify these Terms. For material changes we will give at least 30 days' notice in the application or by email before they take effect. Fee changes follow Section 9. Continued use after the effective date constitutes acceptance. If you do not agree, stop using the Service and withdraw your balance.
We retain prior versions of these Terms together with the dates each was in effect, and will provide a copy of the version you accepted on request.
You consent to receive these Terms, the Privacy Policy, account and transaction records, tax documents, and other required disclosures electronically, by in-application notice or by email to your registered address. You may withdraw this consent by closing your account. To receive a paper copy of any record, contact support@harthos.app.
Transactional communications about Challenges, results, wallet activity, security, and changes to these Terms are part of the Service and continue while your account exists. You may opt out of marketing communications at any time without affecting transactional communications. Message and data rates may apply.
Notices to us must be sent to legal@harthos.app and to Hart Platforms LLC in Dallas, Texas.
Severability. If a provision is held unenforceable, it will be modified to the minimum extent necessary or severed, and the remaining provisions continue in full force.
Waiver. A failure to enforce a provision is not a waiver of it.
Assignment. We may assign these Terms in connection with a merger, acquisition, reorganization, or sale of assets. You may not assign your rights or obligations without our prior written consent.
Survival. Sections 11, 13, 14, 17, 18, 23, 24, 25, 27, and 28 survive termination, together with all payment, tax, and forfeiture provisions relating to amounts accrued before termination.
Entire agreement. These Terms, the Privacy Policy, and the terms displayed for a specific Challenge constitute the entire agreement between us and supersede prior agreements on this subject. They may not be modified orally.
No agency. No partnership, joint venture, agency, or employment relationship is created by these Terms.
Third-party beneficiaries. Except for Apple as stated in Section 20, there are no third-party beneficiaries to these Terms.
Export and sanctions. You represent that you are not located in an embargoed country and are not listed on any United States government restricted party list.
California users. Under California Civil Code Section 1789.3, California users may reach the Complaint Assistance Unit of the Division of Consumer Services of the California Department of Consumer Affairs at 1625 North Market Blvd., Suite N 112, Sacramento, California 95834, or by telephone at (800) 952-5210.
Hart Platforms LLC d/b/a Harthos
Dallas, Texas
General support: support@harthos.app
Legal: legal@harthos.app
Appeals: appeals@harthos.app
Privacy: privacy@harthos.app