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Terms of Service

Effective Date: 18th April 2026

Welcome to lumi. By using our app, you agree to the following terms. If you don't agree, don't use the app.

1. Use of the App

lumi is a mobile application available on iOS and Android that helps users improve their sleep. During onboarding, you provide your name, age, bedtime, and wake time. lumi uses this information to set a sleep schedule that locks the apps at bedtime and unlocks them at wake time. Native system apps (phone calls and messages) remain accessible at all times.

Access to core functionality requires an active subscription. You may only use the app for its intended purpose. Any misuse, including attempts to bypass or manipulate its locking features, is prohibited.

2. Core Features

Bedtime Lock Screen - At your scheduled bedtime, if you attempt to open a blocked app, lumi displays a lock screen indicating it is bedtime and shows when apps will unlock.

Emergency Unlock - You may configure 1 to 3 emergency unlocks per night, each lasting 5 minutes. Using an emergency unlock during a wake challenge will break your streak.

Wind-Down Activities - Before bedtime, you can engage in guided breathing, body relaxation, calming nature soundscapes, brain dumps, and gratitude notes. Brain dump and gratitude entries are stored locally and can be reviewed later.

Wake Challenges - At wake time an alarm sounds and presents a challenge that must be solved to dismiss it. Challenges include: math problems, colour matching, walking 30 steps, emoji memory, pushups, jumping jacks, squats, shaking the phone, barcode scan, QR code scan, taking a photo proof that you are up, and typing a sentence.

3. Permissions

lumi requires certain device permissions to function correctly. These are requested during onboarding or when a feature is first used:

  • Camera - for wake challenges (barcode scan, QR code scan, photo proof, pushups, jumping jacks, squats)
  • Physical Activity / Motion - for movement-based wake challenges (steps, shake)
  • Notifications - for bedtime reminders and wake alarms
  • Display Over Other Apps (Android) / Screen Time API (iOS) - to show the lock screen over blocked apps
  • Usage Access (Android) - to detect when a blocked app is launched

Denying or revoking permissions may prevent certain features from working as intended.

4. No Account Required

You are not required to create an account to use lumi. All personal data is stored locally on your device and is never uploaded to our servers.

5. Subscriptions & Payments

The app is free to download, but a paid subscription is required to access key features. Payments are processed through Apple's App Store or Google Play Store via RevenueCat.

All purchases are final. We do not offer refunds, except as required by applicable law or Apple's or Google's own policies.

6. Third-Party Services

We use trusted third-party providers to enhance the app experience:

  • RevenueCat - for subscription handling and in-app purchases
  • Firebase Crashlytics - for crash reporting and diagnostics
  • PostHog - for anonymised analytics related to app usage and behaviour
  • Google ML Kit - for on-device machine learning used in wake challenges (pose detection, face detection). All processing happens locally on your device

No personally identifiable information is stored on external servers. Data is never sold or shared with third parties for advertising.

7. Restrictions

You agree not to:

  • Use the app for unlawful or unintended purposes.
  • Reverse engineer, tamper with, or attempt to circumvent its core functions (including the lock screen or wake challenges).
  • Exploit bugs or errors in the app.

We reserve the right to restrict access if the app is used in ways that violate these terms or compromise its functionality.

8. Age Requirement

The app is rated 4+ on the App Store and “Everyone” on Google Play. It is intended for users who are able to engage with its sleep and wellness purpose. Parents and guardians are responsible for supervising use by minors.

9. Disclaimer & Limitation of Liability

The app is provided “as is” without warranties of any kind. We make no guarantees regarding effectiveness, availability, or uninterrupted operation. Wake challenges and wind-down activities are intended for general wellness purposes only and are not a substitute for professional medical or sleep therapy advice.

To the fullest extent permitted by law, we are not liable for any indirect, incidental, or consequential damages resulting from your use of lumi.

10. Changes to the Terms

We may update these Terms from time to time. Continued use of the app after changes go into effect constitutes your acceptance of the revised Terms.

11. Contact

If you have any questions about these Terms, please contact us at:

contact@kueenztechnologies.com