Terms of Service
Last updated: May 13, 2026
Plain English: Pay $7.99 once, use Heida forever on your own devices, don't redistribute or reverse-engineer it, refunds go through Apple. The detailed terms below.
1. Acceptance of these terms
By downloading, installing, or using Heida (the "App"), you agree to these Terms of Service ("Terms"). If you do not agree, do not install or use the App. These Terms form a binding agreement between you and FlowStack LLC, a Wyoming limited liability company ("Heida", "we", "us", or "our").
2. Eligibility
You must be at least 13 years old to use Heida. If you are under the age of majority in your jurisdiction, a parent or legal guardian must accept these Terms on your behalf.
3. License
Subject to your compliance with these Terms and the Apple Media Services Terms and Conditions, we grant you a personal, limited, revocable, non-exclusive, non-transferable, non-sublicensable license to install and use the App on iOS devices that you own or control, solely for your personal, non-commercial use.
4. Pricing, free trial, and lifetime purchase
Heida is offered as a one-time purchase of $7.99 USD (or local equivalent set by Apple). The lifetime purchase grants you continued access to the App's Pro features on your Apple ID for as long as Heida remains available on the App Store.
New users may try the App's Pro features free for 7 days. After the trial expires, payment is required to continue using Pro features. You may cancel during the trial with no charge.
Pricing may change for new buyers; existing buyers are not affected by price changes.
5. Refunds
All purchases of Heida are processed by Apple. Refund requests are handled through Apple's standard process at reportaproblem.apple.com. We have no direct control over refund decisions, but we will not contest reasonable refund requests.
6. Your content
Tasks, habits, anchors, notes, categories, goals, and any other data you create in Heida ("Your Content") belong to you. Because Heida stores Your Content locally on your device, we have no access to it, no copy of it, and no ability to view, modify, or share it.
7. Acceptable use
You agree not to:
- Reverse engineer, decompile, or disassemble the App, except to the extent permitted by applicable law.
- Modify, adapt, translate, or create derivative works of the App.
- Rent, lease, lend, sell, redistribute, or sublicense the App.
- Remove or alter any copyright, trademark, or other proprietary notices.
- Use the App for any unlawful purpose or in violation of any local, state, national, or international law.
- Use automated systems to interact with the App in a manner inconsistent with intended use.
8. Updates
We may release updates, patches, or new versions of Heida from time to time. Updates may add features, fix bugs, or remove or change features. Continued use of the App after an update constitutes acceptance of the updated version.
9. Intellectual property
The App, including all design, code, text, graphics, logos, and trademarks (other than Your Content), is the property of FlowStack LLC and is protected by United States and international copyright, trademark, and other intellectual property laws. "Heida" is a trademark of FlowStack LLC.
10. Third-party services
The App is distributed through Apple's App Store and uses Apple's services for payments, notifications, and CloudKit (if and when iCloud sync is added). Your use of those services is also governed by Apple's terms.
11. Disclaimer of warranties
THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE APP WILL BE UNINTERRUPTED, ERROR-FREE, OR FREE OF HARMFUL COMPONENTS, OR THAT ANY DEFECTS WILL BE CORRECTED.
12. Limitation of liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT SHALL FLOWSTACK LLC, ITS AFFILIATES, OR ITS LICENSORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING LOSS OF PROFITS, DATA, USE, OR GOODWILL, ARISING OUT OF OR IN CONNECTION WITH YOUR USE OF THE APP — EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
OUR TOTAL LIABILITY FOR ANY CLAIM ARISING OUT OF OR RELATED TO THE APP OR THESE TERMS WILL NOT EXCEED THE AMOUNT YOU PAID FOR THE APP IN THE TWELVE (12) MONTHS PRECEDING THE CLAIM.
13. Indemnification
You agree to indemnify and hold harmless FlowStack LLC from any claims, damages, losses, liabilities, and expenses (including reasonable attorneys' fees) arising out of your violation of these Terms or your misuse of the App.
14. Termination
You may stop using the App at any time by uninstalling it. We may terminate this license if you materially breach these Terms. Upon termination, your license to use the App ends and you must uninstall it.
15. Governing law and dispute resolution
These Terms are governed by the laws of the State of Wyoming, USA, without regard to its conflict-of-laws principles. Any dispute arising out of or relating to these Terms or the App shall be resolved exclusively in the state or federal courts located in Wyoming. You and FlowStack LLC each consent to personal jurisdiction in those courts.
Class action waiver: To the extent permitted by law, you and FlowStack LLC agree that any dispute will be brought in an individual capacity, and not as a plaintiff or class member in any purported class or representative proceeding.
16. Changes to these terms
We may update these Terms from time to time. The "Last updated" date at the top reflects the most recent revision. Material changes will be noted in the App's release notes. Continued use of the App after changes constitutes acceptance of the updated Terms.
17. Apple-required notices
You and we acknowledge that these Terms are between you and FlowStack LLC, not with Apple, and Apple is not responsible for the App or its content. Apple has no obligation to provide maintenance or support for the App. In the event of any failure of the App to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price; to the maximum extent permitted by law, Apple has no other warranty obligation with respect to the App. Apple is a third-party beneficiary of these Terms and may enforce them.
18. Severability
If any provision of these Terms is found to be unenforceable, the remaining provisions remain in full force and effect.
19. Entire agreement
These Terms, together with our Privacy Policy, constitute the entire agreement between you and FlowStack LLC concerning the App and supersede any prior agreements.
20. Contact
Questions about these Terms? Email hello@heida.app.