Last updated: November 6, 2026
1. Introduction
Please read these Terms of Use ("Terms") before using the iOS app DotLuma - LED Banner ("the App"), provided by T.K Apps ("we"). By using the App, you agree to these Terms.
2. Purpose of the App
The App displays text you enter on your iPhone or iPad screen like an LED sign. You can export what you create as a video or GIF.
3. Your Responsibility
You use the App at your own risk. You are responsible for what you display, the files you export, and how you share them.
If you use the App at concerts, sports events or other venues, follow the rules of the organizer or venue, and be considerate of the people around you, including their view.
4. Safety
The App includes displays with strong changes in light, such as blinking and shifting colors. If you are sensitive to light, please avoid using these. Stop using the App right away if you feel unwell.
Do not operate the App while driving, walking or at any time you need to watch your surroundings. Long periods of full-screen use may warm your device and use a lot of battery.
5. Prohibited Conduct
You must not:
- Violate laws or public order and morals
- Display or share content that infringes the rights, privacy, likeness, copyrights or trademarks of others
- Display or share content that defames, discriminates against or threatens others
- Use the App to deceive people, for example by imitating emergency vehicles or public authorities
- Analyze, modify or reverse engineer the App
- Do anything else we reasonably consider inappropriate
6. Your Data
Presets and settings are stored on your device. They may be lost if your device fails or is lost, if the App is deleted, or because of an operating system problem.
7. Exported Files
You may freely save and share videos and GIFs you make with the App. Please make sure that what you create, including its text, does not infringe the rights of others.
Files exported with the free version include a "DotLuma" watermark.
The content of a DotLuma file or share link comes from its sender. Do not open ones from people you do not trust.
8. In-App Purchases
The App offers paid features called DotLuma Pro.
- DotLuma Pro is a one-time purchase. It is not a subscription and does not renew.
- Purchases are made through the App Store (Apple). The price is the one shown on the App Store.
- You can restore your purchase on the same Apple Account with "Restore Purchase" in the App.
- For refunds, please contact Apple Support.
- We may add to or change the App's features.
9. Changes and Discontinuation
We may change the App, add or remove features, or suspend or end the App without prior notice.
10. Disclaimer
Except in cases of our intent or gross negligence, we are not liable for data loss, device problems, or damage to you or third parties that results from using the App.
We do not guarantee that the App will work properly on every device or operating system, or that it is suitable for any particular purpose.
11. Privacy
See our Privacy Policy for how the App handles information.
12. Changes to These Terms
We may change these Terms when needed. Changes take effect when published on this page. If you keep using the App after a change, you agree to the updated Terms.
13. Governing Law and Jurisdiction
These Terms are governed by the laws of Japan. The courts of Japan have exclusive jurisdiction over any disputes relating to these Terms.
14. Contact
If you have questions about these Terms, please contact us.
T.K Apps
tkapps.support@gmail.com