Terms of Use

Effective October 19, 2026

These Terms of Use (the "Terms") are a binding agreement between you and Block Reaction("we," "us," or "our") governing your use of the KellyCalc mobile application (the "App") and the website on which these Terms appear (the "Site," and together with the App, the "Services").

By downloading, installing, or using the Services, you agree to these Terms and to our Privacy Policy. If you do not agree, do not use the Services.

1. Eligibility

You must be at least 18 years old, or the age of majority where you live, to use the Services. You are responsible for complying with the laws that apply to you, including any laws on trading, investing, and gambling where you live.

2. Not financial advice

Not financial advice. KellyCalc is an educational tool. Your edge is only as good as your probability estimates.

The Services apply the Kelly criterion and related calculations to the outcomes, probabilities, and returns you enter. You acknowledge and agree that:

• Results are mathematical illustrations based entirely on your inputs. They are not investment, trading, betting, tax, or legal advice, and not a recommendation to buy, sell, hold, or wager on anything.
• The quality of any result depends on the accuracy of your probability and return estimates, which are uncertain. Small errors can produce very different position sizes.
• Simulations show a limited number of hypothetical outcomes. They do not predict future results, and past or simulated performance does not guarantee future performance.
• Trading, investing, and betting involve risk, including the loss of all capital you commit. Even sizing correctly by the Kelly criterion can lead to large drawdowns.
• We are not a broker, investment adviser, or financial planner, and no professional or fiduciary relationship is created by your use of the Services.
• You are solely responsible for your decisions and should consult a qualified professional before relying on any result.

3. License

Subject to these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to use the App on Apple-branded devices that you own or control, as permitted by the Usage Rules in the Apple Media Services Terms and Conditions, for your personal use. You agree not to copy, modify, or reverse engineer the App except as the law permits; circumvent any usage limit or purchase check; or use the Services unlawfully.

4. Your information

The Services do not require an account. Information you enter is stored on your device, as described in the Privacy Policy. We are not responsible for loss of that information, including from deleting the App or replacing your device.

5. Free use and Unlimited

The App is free to download and includes 5 successful calculations each calendar week, resetting Monday at midnight in your device's time zone. We may change free limits at any time.

Unlimited is a one-time, non-consumable in-app purchase that removes the weekly limit for as long as we make the App available. It is not a subscription and does not renew. The price is shown in the App before purchase. Purchases are processed by Apple under the Apple Media Services Terms and Conditions, and you can restore Unlimited on another device signed in to the same Apple Account using Restore Purchases in Settings.

Refunds are handled by Apple under its policies at reportaproblem.apple.com. Except as required by law or by Apple's policies, payments are non-refundable.

6. Intellectual property and feedback

The Services, including their software, design, text, and the KellyCalc name and logo, are owned by us or our licensors. If you send us feedback, you allow us to use it for any purpose without obligation to you.

7. Apple App Store terms

If you obtained the App from Apple's App Store, the following terms also apply and control over any conflicting term:

• These Terms are between you and us only, not Apple Inc. ("Apple"). We, not Apple, are solely responsible for the App and its content.
• Apple has no obligation to provide any maintenance or support for the App.
• If the App fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price, if any, for the App. To the maximum extent permitted by law, Apple has no other warranty obligation for the App.
• We, not Apple, are responsible for addressing any claims relating to the App or your use of it, including product liability claims, claims that the App fails to conform to a legal or regulatory requirement, and claims under consumer protection, privacy, or similar laws.
• If a third party claims that the App infringes its intellectual property rights, we, not Apple, are responsible for the investigation, defense, settlement, and discharge of that claim.
• You represent that you are not located in a country subject to a U.S. Government embargo or designated as a "terrorist supporting" country, and that you are not on any U.S. Government list of prohibited or restricted parties.
• You must comply with applicable third-party terms when using the App.
• Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.

To the extent not addressed here, Apple's Licensed Application End User License Agreement also applies.

8. Disclaimer of warranties

TO THE FULLEST EXTENT PERMITTED BY LAW, THE SERVICES AND ALL RESULTS ARE PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTY OF ANY KIND, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, OR NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SERVICES WILL BE ERROR-FREE OR THAT ANY RESULT WILL BE ACHIEVED.

9. Limitation of liability

TO THE FULLEST EXTENT PERMITTED BY LAW, WE WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR ANY TRADING, INVESTMENT, OR WAGERING LOSSES, ARISING OUT OF OR RELATING TO THE SERVICES. OUR TOTAL LIABILITY FOR ANY CLAIM WILL NOT EXCEED THE GREATER OF THE AMOUNT YOU PAID FOR THE APP IN THE 12 MONTHS BEFORE THE CLAIM OR FIFTY U.S. DOLLARS ($50).

Some jurisdictions do not allow these exclusions or limitations, so some of them may not apply to you.

10. Indemnification

You agree to indemnify and hold us harmless from claims and expenses, including reasonable attorneys' fees, arising from your use of the Services or your violation of these Terms or any law.

11. Changes and termination

We may update these Terms by posting them here and changing the effective date above. Your continued use after an update means you accept it. We may suspend or discontinue the Services at any time. You may stop using them at any time by deleting the App.

12. Governing law

These Terms are governed by the laws of the State of Colorado, without regard to conflict-of-law principles. Before filing a claim, you agree to contact us and try to resolve the dispute informally for 30 days. Disputes will be resolved in the state or federal courts located in Colorado, except that either party may bring an individual claim in small claims court.

13. Contact

Questions about these Terms can be sent to Block Reaction at info@truecost.tax.