Lettermill privacy policy

Last updated: 7 November 2026

Lettermill is a word puzzle game for Android. The games work without internet and your progress stays on your phone. We cannot see how, when or whether you play. The one exception is advertising: after your first games the app shows an occasional full-screen ad from Google AdMob, and Google handles the data that takes, as described below.

What the app does not do

• It has no account, sign-in or profile.
• It has no analytics or crash reporting of its own.
• It does not ask you for any permission: no location, camera, microphone, contacts or notifications.
• It shows no banners, and no ads while you play.

Ads

Your first five games have no ads. After that, an ad can appear between games, at most once every five games and ten minutes apart. If there is no connection or no ad, the game simply goes on.

Ads come from Google AdMob, run by Google Ireland Limited in the European Economic Area and Switzerland, and by Google LLC elsewhere. To show ads and to count and limit them, and to prevent fraud, Google's software in the app collects data on your phone and sends it to Google: your phone's advertising ID, your IP address and rough location derived from it, device and app information, and how you interact with ads. Lettermill sends Google no game data, and we do not receive this data about you; Google gives us combined figures. Google's use is described at How Google uses information from sites or apps that use our services.

In the European Economic Area, the United Kingdom and Switzerland you are asked for your choice first, on the basis of your consent. You can change it at any time under Settings, Ad privacy choices. In US states whose privacy laws give you this right, you can opt out of the sale or sharing of your data for ads under Settings, Ad privacy choices. Elsewhere, our basis is our legitimate interest in funding the free game, where that applies. You can reset or delete your advertising ID in your phone's settings.

What stays on your phone

The app keeps your settings, finished puzzles, statistics and streak, and the puzzles you are still playing. This data is stored inside the app on your phone. We have no copy of it. Uninstalling the app or clearing its data deletes it.

Backups you control

• Android backup. If backup is turned on for your Google account, Android may include this game data in your own backup and restore it on a new phone. Google handles that backup under your account, and we cannot read it. You can turn it off in your phone's settings.
• Progress file. In About, you can save your progress to a file in a place you choose, and restore it later. The file stays wherever you put it. It holds your settings and results, and nothing that names you.

When you choose to contact us

Feedback and Report a word open your own mail app. Nothing leaves your phone unless you press send there. A word report holds what you can read in the draft before sending: the word, the problem, the game, the puzzle number, the language and the app version.

If you send a mail, we receive your e-mail address and what you wrote. We use them only to answer you and to correct the word list, on the basis of our legitimate interest in answering you. We do not share them for marketing, and we delete them when we no longer need them for that purpose, unless the law requires us to keep them longer.

Links and sharing

Copying a result puts its text on your phone's clipboard, and where you paste it is up to you. Links in the app, such as Rate Lettermill and this page, open in another app. That app or website has its own privacy terms.

Google Play

Google Play handles downloads, updates and reviews under Google's own privacy policy. Google gives us combined figures, such as the number of installs, and technical reports through Play Console. We use these to look after the app. They do not come from Lettermill itself.

Children

Lettermill is meant for people aged 13 and over. It is not directed at children, and its ads are limited to content suitable for teens.

Your rights

Under the GDPR you can ask to see, correct or delete the personal data we hold about you, limit its use or object to it, and ask for a copy of it. In practice this can only concern mails you sent us; for ad data, use your choices above or contact Google. Write to info@lunarcode-tech.com. You can also complain to your local data protection authority. In the Netherlands, that is the Autoriteit Persoonsgegevens.

Changes

If the app's handling of data changes, we will update this page and its date before that version is released.

Who we are

Lunar Code Tech
Gritpad 5, 2201 JL Noordwijk, the Netherlands
KvK 42163508
info@lunarcode-tech.com