Privacy & Support
Effective 6 November 2026. Lumen Deep is made by Adrien Buffin, an independent developer on the Gold Coast, Australia.
Privacy policy
What stays on your phone
Your progress (gold, upgrades, trophies, best scores and settings) is saved only on your device. Deleting the app deletes this progress.
World ranking
To show the weekly world ranking, the game signs in anonymously to Google Firebase. That creates a random ID that is not linked to you. With it, the game stores the diver name you choose, your score, depth, submarine and a two-letter country code taken from your phone's language region settings. Other players can see your diver name, score and country in the ranking, so please don't use your real name. To have your entry removed, email me.
Analytics
The game uses Google Firebase Analytics to understand how it is played, such as which levels are reached and when the game crashes or runs slowly. This data is anonymous and is used only to improve the game.
Ads
The game can show optional rewarded videos from Google AdMob, only when you tap to watch one (for example, to relight your lamp). To serve and measure these ads, Google may collect device identifiers, approximate location based on your IP address, and ad interaction and diagnostic data, under Google's privacy policy. Learn how Google uses this data at policies.google.com/technologies/partner-sites.
Notifications
If you allow notifications, the game schedules up to two local reminders on your phone, such as a dive of the day. They are created on the device, not sent from a server. You can turn them off in the game options or in iOS Settings › Notifications › Lumen Deep.
Vibration
The game uses your phone's haptics for hits and explosions. You can switch this off with the Shake option in the game.
Third parties
The only third-party services in the game are Google Firebase (ranking and analytics) and Google AdMob (optional rewarded videos). Apple may collect information under its own policies when you download the app from the App Store.
Children
Lumen Deep is not directed at children under 13 and does not knowingly collect personal information from them. If you believe a child has entered personal information as a diver name, email me and it will be removed.
Your choices
You can play without watching any ads. You can ask for your ranking entry to be deleted at any time by email. Deleting the app removes all progress stored on your phone.
Changes
If this policy changes, the new version will be posted on this page with a new effective date.
Support
Found a bug or have an idea? Email me and include your iPhone model.
My progress disappeared
Progress lives only on your phone (only your ranking entry is stored online). It is lost if the app is deleted or the phone is reset without a backup.
I don't want reminders
Turn reminders off in the game options, or in iOS Settings › Notifications › Lumen Deep.
The game feels slow
Close other apps and turn off Low Power Mode.