Terms of Use

Effective date: September 7, 2026 · Last updated: September 7, 2026

These Terms of Use (the “Terms”) are a legal agreement between you and Maksym Pustovit, the developer and operator of Pillar (“Pillar”, “we”, “us”), covering the Pillar iPhone app and this website. By downloading or using Pillar you accept these Terms. If you do not accept them, do not use the app.

1. Licence

We grant you a personal, revocable, non-exclusive, non-transferable, non-sublicensable licence to use Pillar on Apple-branded devices that you own or control, as permitted by the App Store Terms of Service. You may not:

• copy, modify, translate or create derivative works of the app, except as allowed by law;
• reverse engineer, decompile or disassemble the app, except to the extent that applicable law expressly permits it despite this limitation;
• rent, lease, lend, sell, redistribute or sublicense the app;
• remove or obscure any proprietary notice;
• extract the app's sound files, artwork or other assets for use outside the app;
• use the app to build a competing product, or use automated means to interfere with its operation.

We reserve all rights not expressly granted here.

2. Pillar is not medical advice

Accuracy depends on how the AirPods sit in your ears, how you calibrated, and the limits of the sensors themselves. Pillar may miss a slouch or flag one that is not there. Treat the score as a rough signal about a habit, not as a fact about your spine.

3. What you need to use Pillar

A compatible iPhone, and AirPods with motion sensors. Head tracking requires the Motion & Fitness permission; without it the app opens but cannot measure posture. Some behaviour depends on features you control in iOS — notifications, Live Activities and background activity. We do not guarantee that Pillar will work with every device, accessory or iOS version, or that a future iOS or AirPods change will not affect it.

4. Your account and your data

Pillar has no accounts. Your history, calibration and settings live on your device; you are responsible for your own device backups. Deleting the app deletes that data, and we cannot restore it. How we handle data is described in the Privacy Policy, which forms part of these Terms.

5. Subscriptions

Pillar offers optional auto-renewable subscriptions. Plans, prices, the free trial, auto-renewal, cancellation and refunds are set out in the Subscription Terms, which form part of these Terms. In short: a subscription renews automatically until you cancel it in your Apple Account settings, and all payments and refunds are handled by Apple.

6. Free features and changes to the app

We may add, change or remove features, and we may change what is included in the free tier or in a subscription. If a change materially reduces what an active paid subscription includes, we will tell you in advance and you can cancel before the change takes effect. We may also stop distributing or supporting Pillar entirely; if that happens, existing subscriptions will not be renewed.

7. Intellectual property

Pillar, its name, its mascot, its artwork, sounds, copy, design and code are owned by us or our licensors and are protected by intellectual-property law. Bundled sound cues are used under their respective licences; the app's acknowledgements list the sources. Nothing in these Terms transfers ownership of anything to you.

8. Disclaimer of warranties

To the maximum extent permitted by law, Pillar is provided “as is” and “as available”, without warranties of any kind, express or implied, including implied warranties of merchantability, fitness for a particular purpose, accuracy and non-infringement. We do not warrant that the app will be uninterrupted, error-free, or that its posture readings, scores or insights are accurate or suitable for any purpose. Some jurisdictions do not allow the exclusion of certain warranties, so parts of this section may not apply to you.

9. Limitation of liability

To the maximum extent permitted by law, we are not liable for indirect, incidental, special, consequential or punitive damages, or for lost profits, lost data or personal injury arising from your use of Pillar. Where liability cannot be excluded, our total liability to you is limited to the greater of the amount you paid us for Pillar in the twelve months before the claim, or US$50. Nothing here limits liability that cannot be limited by law, including for death or personal injury caused by our negligence, or for fraud. If you are a consumer, your mandatory statutory rights are unaffected.

10. Indemnity

You agree to indemnify us against claims, losses and reasonable costs arising from your breach of these Terms or your unlawful use of the app.

11. Termination

These Terms apply until terminated. They end automatically if you stop using and delete the app, and we may terminate your licence if you materially breach them. On termination you must stop using Pillar; sections 2, 7, 8, 9, 10 and 13 survive.

12. Apple's role

Because Pillar is distributed through the App Store, the following apply and, where they conflict with anything else in these Terms, they prevail:

• These Terms are between you and us only, not with Apple. Apple is not responsible for Pillar or its content.
• Apple has no obligation to furnish any maintenance or support for Pillar. Support requests go to glowdapp@gmail.com.
• If Pillar fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price if applicable. To the maximum extent permitted by law, Apple has no other warranty obligation with respect to Pillar.
• We, not Apple, are responsible for addressing any claim relating to Pillar, including product liability claims, any claim that Pillar fails to conform to a legal or regulatory requirement, and claims arising under consumer-protection or similar legislation.
• We, not Apple, are responsible for the investigation, defence, settlement and discharge of any third-party claim that Pillar infringes that party's intellectual-property rights.
• 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 listed on any U.S. Government list of prohibited or restricted parties.
• You must comply with applicable third-party terms of agreement when using Pillar.
• Apple and its subsidiaries are third-party beneficiaries of these Terms and have the right to enforce them against you.

13. Governing law and disputes

These Terms are governed by the laws of Ukraine, without regard to conflict-of-law rules. If you are a consumer resident in the European Economic Area, the United Kingdom or another jurisdiction whose law gives you the protection of your local courts and mandatory consumer rules, nothing here deprives you of those rights. We would rather solve a problem than argue about it — write to us first and we will try to sort it out.

14. Changes to these Terms

We may update these Terms. Material changes will be reflected in the “Last updated” date above and, where practicable, announced in the app. Continuing to use Pillar after a change takes effect means you accept the updated Terms.

15. Contact

Maksym Pustovit — developer of Pillar. glowdapp@gmail.com