Account and Data Deletion
Last updated: September 12, 2026
This page explains how to delete the data saved by Chess: Emperor Napoleon, and what is deleted.
How to delete
- Open the App.
- Open "Settings" from the home screen.
- Under "About", tap "Delete all saved data".
- Tap once more to confirm, and the deletion is carried out.
Deletion cannot be undone. Match records, move lists, skill estimates, and achievements cannot be recovered, so save any move lists you need before deleting.
What is deleted
The App stores game data on your device (in the browser's localStorage). The deletion action removes every item the App has stored.
- Match records and move lists
- Results, end-of-game details (number of moves, material left on the board, final position), and move records of your games
- Skill estimate
- Your estimated rating and the game history it is based on
- Achievements
- Unlocked achievements and progress
- Settings
- Theme, board texture, sound effects, haptics, and other settings
- Profile
- Your display name and avatar selection
- AI reviews and "The AI's thoughts"
- Saved AI reviews and a record of the lines shown during games
- Crash records
- Records of crashes kept only on your device
- Authentication session
- Session information for your anonymous account
Your anonymous account is linked to you only through the session stored on this device. Deleting the session removes your means of claiming the account, so the deletion action also amounts to abandoning the account.
About data stored on the server
If you have taken part in online matches, your match records, rating, and leaderboard position are stored on our server. Even if you have not played online, purchasing or restoring the paid plan creates an anonymous account, and its identifier, automatically assigned display name, and purchase status are stored on the server. In addition, if you have used the AI features, an identifier used for rate-limit counting is recorded on the server (see Section 4 of the Privacy Policy for details).
If you have done none of these, no data is stored on the server. Note, however, that requesting the AI coach's summary or an AI review creates a rate-limit record (the record is deleted after a set period). Records, results, and settings for games against the AI are all kept on your device and are completely removed by the action described above.
When we receive a deletion request, match records stored on the server are converted into a form that cannot identify you, in order to keep them consistent with your opponents' records (the game result remains for your opponent). Identifiers recorded for rate limiting are deleted automatically once they are more than 2 hours old, in the course of subsequent calls.
- Send deletion requests to
- contact@aicreonext.com
- Operator
- AICREONEXT LLC (合同会社AICREONEXT)
If you uninstall the App
Uninstalling the App (or deleting this site's data from your browser) also removes the data stored on your device. Depending on your browser settings, however, some data may remain, so if you want to be certain it is gone, perform the in-app deletion before uninstalling.