Terms of Service

Last updated: October 1, 2026

The website located at mathy.game and the related Mathy iPhone and iPad applications are provided by Main Character LLC, a company based in Massachusetts ("Company," "we," "us," or "our"). The website, applications, and related support services are the "Service."

These Terms of Service (the "Terms") govern your use of the Service. By accessing or using Mathy, you accept these Terms for yourself or for the child or other person whose use you are authorized to supervise. If you do not agree, do not use the Service.

The gist

You can practice for free without an account. Optional private iCloud sync on iPhone and iPad is free.
You choose whether to enable iCloud sync or submit a website Topic Challenge score.
Keep track of your data. Local progress can be lost, and changes that have not synced cannot be recovered from the cloud.
Sending help requests, feedback, or diagnostics uses online services, with or without a paid plan.
Mathy accounts, subscriptions and public learning profiles are not available in the current product.
Mathy helps you practice. It does not guarantee a grade or learning outcome.
The detailed terms include arbitration and limits on liability. You can opt out of arbitration within 30 days as explained in Section 11.

This summary helps you find the main points. The details below govern your use of Mathy. Features vary by version and availability. Describing an optional feature here does not make it available in your app or start a subscription.

THESE TERMS INCLUDE AN ARBITRATION AGREEMENT, CLASS ACTION WAIVER, AND JURY TRIAL WAIVER IN SECTION 11. READ THAT SECTION CAREFULLY. YOU MAY OPT OUT OF ARBITRATION WITHIN 30 DAYS AS DESCRIBED IN SECTION 11.

1. Eligibility and supervised use

Mathy is a general-audience educational service designed for learners at many levels. It is not directed specifically to children under 13, but children may use the account-free local features with permission and supervision from a parent or legal guardian.

If you have not reached the age of legal majority where you live, your parent or legal guardian must review and agree to these Terms on your behalf and supervise your use. A child under 13 may use only the local learning features and may not create a cloud account, sync learning data, use public profiles or online leaderboards, contact support, or send diagnostics. Purchasing a plan does not change these restrictions. A parent or legal guardian may contact Company on the child's behalf.

2. The Service

2.1 Educational purpose

Mathy is designed to help a learner practice recall and automaticity for material the learner is already studying or understands. Mathy is not a school, accredited course, teacher, tutoring service, testing authority, or substitute for qualified instruction. Content, feedback, progress measures, and recommendations may be incomplete or incorrect.

2.2 Local-first storage

Local learning features store data on the device or in the browser profile and do not require an account or paid plan. Supported iPhone and iPad versions offer optional free private iCloud sync. Those features apply only when available and when you choose to use them. Local Practice does not depend on an online connection.

Removing the app, clearing site data, losing a device, replacing local data, or encountering a storage failure may permanently remove progress. Company is not responsible for local data loss except to the extent the law does not allow that limitation.

2.3 Content reports and corrections

You may report a suspected content or grading problem. We may correct, replace, deactivate, or remove content without preserving a prior version for future Practice. Historical records may retain version references needed to explain past activity.

2.4 Free features

Local learning and optional iCloud sync are free. The website Topic Challenge and its casual leaderboard do not require a Mathy account. Mathy accounts, subscriptions, public learning profiles and account-based ranked play are not available in the current product. These Terms do not start a subscription.

2.5 Sync and recovery

You choose whether to enable iCloud sync. Supported existing and future records may transfer through your private Apple iCloud storage to your Apple devices. Sync needs connectivity and may be delayed or interrupted. It cannot recover changes that never reached iCloud and does not guarantee against every form of data loss. Turning sync off or clearing local progress does not automatically erase an existing iCloud copy. Apple's storage controls govern its removal. The Privacy Policy explains this processing.

2.6 Website Topic Challenge

The permanent website challenge has its own optional casual leaderboard. Connectivity, score validation and fair-play rules can affect whether a score is accepted. We may remove manipulated results or other content that violates these Terms. Rankings are product features, not educational credentials. The leaderboard does not publish private local learning history.

3. Acceptable use

You agree not to:

use the Service in a way that violates law or another person's rights.
attempt to disrupt, damage, overload, or gain unauthorized access to the Service or its delivery infrastructure.
reverse engineer or circumvent technical protections except where applicable law expressly permits it.
use automated means to scrape or extract substantial portions of Mathy's content or code.
falsely suggest that Mathy, Main Character LLC, or a third party endorses you or your use.
send or publish unlawful, abusive, infringing, impersonating, or harmful material through support or public features.
manipulate challenge results, automate competitive answers, or bypass service protections.

We may limit or terminate access to online features, public delivery, or support services when reasonably necessary to protect users, Company, or the Service.

4. Ownership and license

Mathy, including its software, design, text, graphics, curriculum structure, generated materials, trademarks, and other content, is owned by Company or its licensors and is protected by intellectual property laws.

Subject to these Terms, Company grants you a personal, limited, revocable, nonexclusive, nontransferable license to use the Service for lawful educational and personal purposes. No ownership right is transferred to you.

You retain rights in original notes and reports that you create. If you enable cloud features, you give us permission to store, copy, transmit, and process that content as needed to provide the features you choose. Permission to display it publicly applies only to material you choose to publish. Private sync does not grant permission to publish your private learning history. This permission lasts only as needed to provide those features and handle the retention described in the Privacy Policy.

When you deliberately send material to support, you grant Company permission to use, reproduce, modify, and analyze it as reasonably needed to respond, investigate, correct content, protect the Service, and improve Mathy. Do not send material you do not have the right to share.

Feedback and suggestions may be used without restriction or compensation, provided we do not publicly identify you without permission.

5. Third-party services and Apple terms

The Service may use or link to services provided by Apple, Google, hosting and database providers, browsers, email providers, and the payment provider identified at purchase. Their terms and privacy policies apply to their services. Company is not responsible for third-party services.

For an Apple-distributed application, Apple's standard Licensed Application End User License Agreement also applies to the application license. These Terms govern the Mathy service and supplement that standard agreement. If a non-waivable Apple term conflicts with these Terms, the non-waivable Apple term controls for that conflict.

6. No educational guarantee

Mathy may show progress, fluency, readiness, XP, streaks, awards, scores, or other measures. These are product measures, not official academic assessments. They do not guarantee mastery, course credit, placement, grades, admission, certification, employment, or any other outcome.

You and any supervising parent, guardian, teacher, or school remain responsible for deciding whether content and practice are appropriate for the learner.

7. Disclaimers

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE." COMPANY AND ITS SUPPLIERS DISCLAIM ALL EXPRESS, IMPLIED, AND STATUTORY WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, QUIET ENJOYMENT, ACCURACY, AND NON-INFRINGEMENT.

WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, SECURE, ERROR-FREE, AVAILABLE ON EVERY DEVICE, OR FREE OF INCORRECT CONTENT. SOME JURISDICTIONS DO NOT ALLOW CERTAIN WARRANTY LIMITATIONS, SO SOME OF THESE LIMITATIONS MAY NOT APPLY TO YOU.

8. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, COMPANY AND ITS SUPPLIERS WILL NOT BE LIABLE FOR LOST DATA, LOST PROGRESS, LOST PROFITS, LOST REVENUE, LOSS OF USE, OR ANY INDIRECT, CONSEQUENTIAL, EXEMPLARY, INCIDENTAL, SPECIAL, OR PUNITIVE DAMAGES ARISING FROM OR RELATED TO THE SERVICE OR THESE TERMS, EVEN IF ADVISED THAT SUCH DAMAGES ARE POSSIBLE.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, COMPANY'S TOTAL LIABILITY FOR ALL CLAIMS ARISING FROM OR RELATED TO THE SERVICE OR THESE TERMS WILL NOT EXCEED THE GREATER OF FIFTY UNITED STATES DOLLARS OR THE AMOUNT YOU PAID COMPANY FOR MATHY DURING THE SIX MONTHS BEFORE THE EVENT GIVING RISE TO THE CLAIM.

SOME JURISDICTIONS DO NOT ALLOW CERTAIN LIABILITY LIMITATIONS, SO SOME OF THESE LIMITATIONS MAY NOT APPLY TO YOU.

9. Indemnification

To the extent permitted by law, you agree to indemnify and hold Company and its officers, employees, and agents harmless from claims, losses, and expenses arising from your unlawful use of the Service, your violation of these Terms, or material you deliberately submit in violation of another person's rights. This obligation does not apply where prohibited by law.

10. Copyright notices

Company respects intellectual property rights. A copyright notice should identify the copyrighted work, the allegedly infringing material and its location, your contact information, a good-faith statement, an accuracy and authority statement under penalty of perjury, and your physical or electronic signature.

Main Character LLC

82 Wendell Ave.

STE 100

Pittsfield, Massachusetts 01201

United States

This is a registered-agent mailing address, not a public office.

You may initiate contact through https://mathy.game/support.

11. Dispute resolution

11.1 Informal resolution

Before starting arbitration or an eligible small-claims action, you and Company agree to make a good-faith effort to resolve the dispute through an individualized telephone or video conference. The person raising the dispute must provide written notice describing the dispute and provide their name, telephone number, mailing address, email address, and counsel's contact information if represented.

Notice to Company should be submitted through the Main Character LLC dispute form at https://docs.google.com/forms/d/e/1FAIpQLSf5YEqiyeNhd93MtWQCUCAJIljTSp-Zp9pXoC7_o0Rpg7s8jQ/viewform?usp=header.

The conference should occur within 60 days after notice is received unless the parties agree to extend that period. Completing this informal process is a condition that must be satisfied before arbitration begins. Relevant limitation and filing periods are paused while the required informal process is pending.

11.2 Agreement to arbitrate

These Terms evidence a transaction involving interstate commerce. The Federal Arbitration Act governs the interpretation and enforcement of this arbitration agreement.

Except for eligible individual claims in small-claims court and requests for equitable relief involving infringement or misuse of intellectual property, you and Company agree that disputes related to Mathy, the Service, or these Terms will be resolved by binding individual arbitration rather than in court.

Arbitration will be administered by JAMS. Claims and counterclaims under $250,000, excluding attorneys' fees and interest, use the current JAMS Streamlined Arbitration Rules. Other claims use the current JAMS Comprehensive Arbitration Rules and Procedures. If JAMS is unavailable, the parties will select another established arbitration provider.

Unless the parties agree otherwise, arbitration will occur in the county where you reside. The arbitrator may award the same individualized relief available in court and will issue a written decision. Judgment on the award may be entered in a court with jurisdiction.

11.3 Jury and class action waiver

EXCEPT FOR THE LIMITED COURT MATTERS DESCRIBED ABOVE, YOU AND COMPANY WAIVE THE RIGHT TO HAVE A DISPUTE DECIDED BY A JUDGE OR JURY. THE ARBITRATOR, NOT A COURT, WILL DECIDE COVERED DISPUTES.

YOU AND COMPANY MAY BRING CLAIMS AGAINST EACH OTHER ONLY ON AN INDIVIDUAL BASIS, EXCEPT FOR THE BATCH PROCESS IN SECTION 11.4. NEITHER PARTY MAY PARTICIPATE AS A PLAINTIFF OR CLASS MEMBER IN A CLASS, COLLECTIVE, REPRESENTATIVE, OR MASS ACTION. AN ARBITRATOR MAY AWARD RELIEF ONLY TO THE INDIVIDUAL PARTY SEEKING RELIEF AND ONLY AS NEEDED FOR THAT PARTY'S CLAIM.

If a final court decision finds that a particular request for public injunctive relief cannot lawfully be subject to these limits, that request alone may proceed in the state or federal courts located in Massachusetts. All other covered disputes remain subject to arbitration or eligible small-claims proceedings.

11.4 Batch arbitration

If 100 or more individual arbitration requests of a substantially similar nature are filed against Company by or with the assistance of the same law firm, group of law firms, or organizations within a 30-day period, JAMS will administer those requests in batches of 100, with any remaining requests in a final smaller batch. JAMS will appoint one arbitrator for each batch and administer each batch with one set of filing and administrative fees per side, one procedural calendar, one hearing if needed, and one final award.

Requests are substantially similar when they arise from the same or similar events, raise the same or similar legal issues, and seek the same or similar relief. If the parties disagree about whether batching applies, JAMS will appoint a standing administrative arbitrator to decide that issue. The parties will cooperate in good faith to implement the batch process and reasonable measures that reduce time and cost.

This batch process does not authorize a class, collective, representative, or mass arbitration. It permits consolidation only as expressly described in this Section 11.4.

11.5 Arbitration opt-out

You may opt out of this arbitration agreement by submitting the Main Character LLC opt-out form within 30 days after you first become subject to it. The form is available at https://docs.google.com/forms/d/e/1FAIpQLSf5YEqiyeNhd93MtWQCUCAJIljTSp-Zp9pXoC7_o0Rpg7s8jQ/viewform?usp=header.

Your notice must include your name and address and must clearly state that you want to opt out of the Mathy arbitration agreement. Opting out does not affect the rest of these Terms or a different arbitration agreement you may have with Company.

11.6 Survival and severability

This arbitration agreement survives termination of these Terms. If a portion is found invalid or unenforceable, it will be severed to the minimum extent necessary and the remainder will continue, except where applicable law requires a different result.

11.7 Changes to arbitration

If Company makes a future material change to this arbitration agreement, you may reject that change through the Main Character LLC dispute form within 30 days after it becomes effective. Rejecting a change does not create a new opt-out right for a version you already accepted and does not affect a valid prior opt-out.

12. Changes and termination

We may update these Terms as Mathy changes. If a change is material, we may provide notice through the Service or on mathy.game. Continued use after the effective date of updated Terms means you accept them, to the extent permitted by law.

You may stop using Mathy at any time. Stopping sync does not automatically delete previously stored iCloud data. The Privacy Policy explains retention and deletion. Use Apple’s iCloud storage controls for iCloud-data removal and contact us for requests concerning information we process. Company may stop providing all or part of the Service or limit access to public delivery or support services. Sections that by their nature should survive termination will survive, including ownership, disclaimers, liability limits, dispute resolution, and general terms.

13. General terms

The Service may be subject to United States export-control laws and laws in other countries. You agree not to export or use the Service in violation of applicable law.

If you are a California resident, you may report complaints to the Complaint Assistance Unit of the Division of Consumer Products of the California Department of Consumer Affairs at 400 R Street, Sacramento, California 95814 or by telephone at 800-952-5210.

Electronic notices and communications satisfy legal writing requirements to the extent allowed by law. These Terms and the Privacy Policy form the entire agreement between you and Company concerning the Service, apart from Apple's standard application license and any non-waivable platform terms.

If a provision is invalid or unenforceable, it will be modified or severed to the minimum extent necessary and the remaining provisions will continue. Company's failure to enforce a provision is not a waiver. You may not assign these Terms without Company's written consent. Company may assign them as part of operating, financing, reorganizing, or transferring the Service.

14. Contact

Contact Main Character LLC through the Mathy contact page at https://mathy.game/support. The contact page is our preferred contact method.