Foldline Duo
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Terms of Use

Last updated: 29 October 2026

These Terms of Use govern your use of the Foldline Duo mobile app (the “Game”), published by BuildLaunch. By installing or playing the Game you agree to them. If you do not agree, please do not use the Game.

1. The licence

We grant you a personal, non-exclusive, non-transferable, revocable licence to install and play the Game on devices you own or control, for your own non-commercial entertainment, subject to these Terms and the App Store’s rules.

2. Accounts

An account is optional. If you create one, keep your password safe and give us a real email address. You are responsible for what happens under your account. You can delete your account from the pause menu (see our Privacy Policy for how long that takes).

3. Stories and purchases

Some stories are free and others may be sold as one-time purchases through the App Store. Purchases are processed by Apple, are governed by Apple’s terms, and are generally non-refundable except as required by law or Apple’s policies. Unlocking later stories does not skip the story: a story opens once the one before it is finished.

We may add, change or retire stories over time. New stories download to your device from our servers; you need an internet connection to download one but not to play it afterwards.

4. What you may not do

Streaming, recording and reviewing the Game is welcome. Please do not publish the full solutions to unreleased stories before their release.

  • Copy, modify, decompile, reverse engineer or extract the art, story, audio or code of the Game, except where the law allows it despite this restriction.
  • Cheat by tampering with the Game’s progress files, our servers or other players’ accounts, or use the Game’s servers in any way that harms them.
  • Sell, rent, sub-license or redistribute the Game or its content.
  • Use the Game to break the law or infringe anyone’s rights.

5. Content and ownership

The Game, including its story, characters, paintings, music, sound, code and name, belongs to BuildLaunch and its licensors and is protected by copyright and other laws. All characters and events in the Game are fictional. Any resemblance to real people or events is coincidental.

6. Hardware and performance

The Game is optimised for all screens, including foldable phones such as the iPhone Duo, flat iPhones and iPads in landscape. Hinge and haptic features depend on your device and operating system, and may behave differently on different devices. We do not promise that every device will behave identically.

7. Health

The Game uses gentle vibration, fading images and sound. Take a break if you feel tired or uncomfortable. Do not play while driving or doing anything that needs your attention.

8. Termination

You can stop using the Game at any time by deleting it. We may suspend access if you seriously or repeatedly break these Terms. Sections that by their nature should survive termination will do so.

9. Disclaimers

The Game is provided “as is” and “as available”. To the extent the law allows, we make no promises that it will be uninterrupted, error-free or fit for a particular purpose. Nothing in these Terms limits rights you have as a consumer that cannot be limited by law.

10. Limitation of liability

To the extent the law allows, BuildLaunch is not liable for indirect or consequential losses, or for loss of data, arising from your use of the Game. Our total liability for any claim is limited to the amount you paid for the Game in the 12 months before the claim. Nothing excludes liability that cannot be excluded by law.

11. Apple’s terms

These Terms are between you and BuildLaunch, not Apple. Apple has no obligation to provide maintenance or support for the Game, and is not responsible for claims relating to it. If the Game fails to meet a legal warranty, you may tell Apple, who will refund the purchase price where required; Apple has no other warranty obligation. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you. You confirm that you are not in a country subject to a US government embargo and are not on a US list of prohibited parties. The Apple Licensed Application End User Licence Agreement applies to the extent it conflicts with anything here.

12. Changes and governing law

We may update these Terms; the date above shows the latest version, and continued play means you accept it. These Terms are governed by the laws of the jurisdiction where BuildLaunch is established, without regard to conflict-of-law rules, and subject to any mandatory consumer protections where you live.

13. Contact

Questions about this document? Write to BuildLaunch at dev@buildlaunch.dev.