Terms of Service

Lumen · Effective date: 29 May 2026

Plain-language summary. Lumen is a personal tool that helps you track time away from a habit. It is not medical care. Using Lumen requires an active paid subscription that Apple bills through your Apple ID. You can cancel any time in your Apple subscription settings.

1. Acceptance of these terms

These Terms of Service (the “Terms”) form a binding agreement between you and Efe Budak (“we”, “us”, “our”) governing your use of the Lumen iOS application (the “App”). By downloading, installing, or using the App you confirm that you have read, understood, and agreed to these Terms and to our Privacy Policy. If you do not agree, please do not use the App.

2. Who can use the App

You must be at least 18 years old (or the minimum digital-consent age in your country, whichever is higher) and able to enter into a binding contract under the laws of your jurisdiction. If you are using the App on behalf of an organisation, you confirm that you have authority to bind that organisation to these Terms.

3. Not medical advice

Lumen is a self-tracking and self-reflection tool. It does not provide medical advice, diagnosis, treatment, therapy, or any clinical service, and it is not a substitute for care from a qualified health professional. Content shown in the App (including timelines, strategies, and exit scripts) is general information for educational purposes only. If you are in crisis, experiencing severe withdrawal, or have any medical concern, contact emergency services or a qualified clinician immediately. Reliance on any information in the App is at your own risk.

4. Your account and your data

The App does not require you to create an account. All of the information you enter — including your habit, start date, daily cost, urge log, and preferences — is stored locally on your device. You are responsible for keeping your device secure and for backing up your data through standard iOS mechanisms if you wish to preserve it across devices. Deleting the App or using the in-app “Delete all data” control permanently removes your local information.

5. Subscriptions and payments

Lumen requires an active “Lumen Pro” subscription to use its features. Subscriptions are sold and billed by Apple through the App Store using your Apple ID.

5.1 Pricing and plans

The current price, billing period (weekly or yearly), and any introductory or promotional offer are displayed in the App before you confirm your purchase. Prices may vary by country and may change from time to time; any change will only take effect for renewals after you have been notified through the App or by Apple.

5.2 Auto-renewal

Payment is charged to your Apple ID at confirmation of purchase.
The subscription automatically renews at the end of each billing period unless auto-renew is turned off at least 24 hours before the end of the current period.
Your account is charged for renewal within 24 hours prior to the end of the current period, at the price of the selected plan.
You can manage and cancel your subscription in Settings → [your name] → Subscriptions on your device after purchase. Deleting the App does not cancel the subscription.

5.3 Free trials and introductory offers

If a free trial or introductory offer is presented, any unused portion of a free trial is forfeited when you purchase a subscription, where applicable.

5.4 Refunds

All purchases are processed by Apple. Refund requests are handled by Apple in accordance with the App Store’s standard terms. You can request a refund at reportaproblem.apple.com. We are not able to issue refunds directly.

5.5 Restore purchases

If you reinstall the App or switch to a new device using the same Apple ID, you can restore an active subscription from the paywall using the “Restore purchases” control. This is powered by Apple StoreKit, as described in the Privacy Policy.

6. Licence to use the App

Subject to your compliance with these Terms, we grant you a personal, limited, non-exclusive, non-transferable, revocable licence to install and use the App on any Apple-branded device that you own or control, in accordance with the Apple Media Services Terms and the Usage Rules in Apple’s App Store terms.

7. Things you agree not to do

Reverse engineer, decompile, disassemble, or attempt to derive the source code of the App, except to the extent permitted by applicable law.
Copy, modify, distribute, sell, lease, sublicense, or create derivative works of the App or any part of it.
Use the App for any unlawful purpose or in any way that could damage, disable, overburden, or impair the App or any third-party service it relies on.
Bypass or attempt to bypass the paywall, entitlement checks, or any other access control.
Use the App to provide a commercial service to third parties without our written consent.

8. Intellectual property

The App, including its source code, design, copy, illustrations, sounds, and trademarks, is owned by Efe Budak and protected by intellectual-property laws. These Terms grant you no rights in our trademarks, logos, or brand. All rights not expressly granted are reserved.

9. Third-party services

The App relies on services provided by Apple (the App Store and StoreKit) for distribution and subscription management. Your use of those services is also subject to Apple’s terms and privacy policy. We are not responsible for the availability, accuracy, or content of third-party services.

10. Disclaimers

The App is provided “as is” and “as available”, without warranties of any kind, whether express, implied, statutory, or otherwise, including any implied warranties of merchantability, fitness for a particular purpose, non-infringement, accuracy, or uninterrupted operation. We do not warrant that the App will meet your requirements, that any defects will be corrected, or that the App is free of viruses or other harmful components. Some jurisdictions do not allow the exclusion of certain warranties; in those jurisdictions, the exclusions above apply only to the maximum extent permitted by law.

11. Limitation of liability

To the maximum extent permitted by applicable law, in no event will Efe Budak, or any of our affiliates, licensors, or service providers, be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of profits, data, goodwill, or other intangible losses, arising out of or in connection with your use of, or inability to use, the App. Our total aggregate liability for any claim arising out of or relating to the App or these Terms will not exceed the greater of (a) the amount you paid us for the App in the twelve months preceding the claim or (b) USD 25.

12. Indemnification

You agree to defend, indemnify, and hold harmless Efe Budak from and against any claims, damages, liabilities, costs, and expenses (including reasonable legal fees) arising out of or relating to your misuse of the App, your violation of these Terms, or your violation of any law or the rights of a third party.

13. Termination

You may stop using the App at any time by deleting it from your device. We may suspend or terminate your access to the App at any time, without notice, if we believe you have violated these Terms or if continued provision of the App becomes impracticable. Sections that by their nature should survive termination (including ownership, disclaimers, limitations of liability, and dispute resolution) will continue to apply.

14. Changes to the App and these Terms

We may update the App and these Terms from time to time to reflect changes in features, legal requirements, or our business. When we make material changes to these Terms, we will update the “Effective date” above and, where appropriate, surface a notice in the App. Your continued use of the App after the changes take effect constitutes acceptance of the updated Terms.

15. Governing law and disputes

These Terms are governed by the laws of the Republic of Ireland, without regard to its conflict-of-laws principles. Any dispute arising out of or relating to these Terms or the App will be brought exclusively in the competent courts of Ireland, except where mandatory consumer-protection laws of your country of residence grant you the right to bring proceedings in your local courts. Nothing in these Terms limits any non-waivable statutory rights you may have as a consumer, including your rights under European Union consumer-protection law.

16. Apple-specific terms (EULA acknowledgements)

The following terms apply to your use of the App on an Apple device and supplement the standard Licensed Application End User License Agreement referenced by Apple.

These Terms are concluded between you and Efe Budak only, and not with Apple. Apple is not responsible for the App or its content.
Apple has no obligation to provide any 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 (if any) for the App; to the maximum extent permitted by law, Apple has no other warranty obligation with respect to the App.
Any claims relating to the possession or use of the App (including product liability, failure to conform to applicable legal or regulatory requirements, or claims under consumer-protection or similar legislation) are our responsibility, not Apple’s.
If a third party claims that the App or your possession and use of it infringes that party’s intellectual-property rights, we, not Apple, are solely responsible for the investigation, defence, settlement, and discharge of any such claim.
You represent and warrant 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.
Apple and Apple’s subsidiaries are third-party beneficiaries of these Terms and, upon your acceptance, will have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary.

17. Contact

Questions about these Terms can be sent to:

Efe Budak
efebudakapps@gmail.com