Privacy policy

Last updated: September 26, 2026. Dr. Diamond is published by Liel Vital Dahan (LielZ Programming), Israel. Contact: admin@lielz.co.il.

What we collect

• Account: a random ID created on your device if you play as a guest; or your Google or Apple account ID if you sign in with them; your display name and, for Google, your profile picture.
• Gameplay: the moves and scores of online games and daily challenges, your wins, games played, best score, skill rating and rank, your daily login streak, and your position on the leaderboards.
• In-game items: your diamond balance, the gem and board styles you own and use, and whether you bought "Remove ads".
• Purchases: when you buy something in the app, the payment is handled by Apple or Google. We receive the purchase's transaction ID and receipt to deliver the item and prevent fraud. We never see your card or payment details.
• Notifications: if you allow notifications, a notification token for your device and your language, so we can tell you when it is your turn or a friend is waiting. Daily reminders are scheduled on your device only.
• Settings: your language, sound and music choices are stored on your device.
• Advertising: the app shows ads through Google AdMob. With your consent (and, on iPhone, your permission for tracking), Google may use your device's advertising identifier to show personalised ads. You can change your choice at any time in Settings → Ad privacy choices. See how Google uses information from apps.

Why

To run online matches and daily challenges, keep your progress and items, show leaderboards and ranks, match players of similar skill, deliver purchases, send the notifications you allowed, prevent cheating, and pay for the game with ads.

Who we share it with

Only with the services the game needs: Hetzner Online GmbH (server hosting), Google (sign-in, advertising, notifications on Android), Apple (sign-in, purchases and notifications on iPhone). Other players can see your display name, picture, scores, rank and emoji reactions. We do not sell your data.

Where it is stored and for how long

On our game server hosted by Hetzner Online GmbH in Germany (European Union). We keep your data while your account exists; backups are kept for 14 days.

Delete your account

In the app: open Dr. Diamond → Settings (gear icon) → Delete my account → confirm. Your account is deleted immediately.

Without the app: email admin@lielz.co.il with the subject "Dr. Diamond account deletion" and your player name. We delete it within 30 days.

What is deleted: your account, player name, wins, scores, rating, diamonds, items and purchases records. What is kept: nothing, except server backups, which are erased automatically within 14 days.

Your choices and rights

You can also email us at admin@lielz.co.il to ask for a copy of your data or a correction.

Children

Dr. Diamond is intended for players aged 13 and over and is not directed at children under 13. We do not knowingly collect personal data from children under 13; if you believe a child has created an account, email us and we will delete it.

Changes

If this policy changes, we will update this page and the date above.