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Privacy Policy

Effective 13 November 2026 · Questions: dudiaryan619@gmail.com

Diamond Miner is a mobile mining game for Android. You can play without an account. This policy explains what data the app, its online service and this website handle, and why. It applies to the Diamond Miner Android app, the Diamond Miner online service at api.diamondminer.online and this website, diamondminer.online.

1. Playing without an account

If you play without signing in, your game progress is kept only in the app's memory while it is open and is not saved or sent to us. Older versions of the app stored progress on your phone; that file stays on your phone until you uninstall the app or clear its storage, and it is not included in device backups.

2. Data we handle if you create an account

Creating an account is optional. If you do, we handle:

  • Account: your email address, a password (stored only by Google Firebase Authentication, never by us in readable form), your display name and whether your email is verified.
  • Game progress (cloud save): your level, machines, outpost buildings, daily streak and missions, achievements, mini-game statistics, how many diamonds you earned today (for the daily limit), a short history of game activity and your game settings. If you sign in on a phone that has an older saved game, its progress is imported once, with limits, and we keep a record of that import (game numbers only). Diamonds from an older on-phone save are not added to your balance.
  • Diamond balance: your diamond balance, diamonds reserved for a reward request, lifetime totals, and a ledger of reward requests, refunds and corrections. Records from the earlier two-currency version of the game (including a one-time record of how the balance was moved to the single balance) are kept as history.
  • Rewards: any reward requests you make, their status and, once fulfilled, the reward code issued to you (stored encrypted).
  • Optional leaderboard: if you opt in, an anonymous alias and your lifetime diamond total. Your name and email are never shown.
  • Referrals: your invite code, and, if you join with a friend's code, a record linking the two accounts with its status. To stop the same person being invited twice we store a one-way hash of your email address with that record, never the email itself. Invited players are never named to the person who invited them.
  • Notifications: in-app messages about your reward requests.
  • Security: request counters used for rate limiting, and audit records of administrator actions on your account.

3. Why we use it

  • To sign you in and keep your account secure.
  • To keep an accurate, tamper-resistant record of diamonds and rewards, and to apply the daily earning limit and reward eligibility rules (verified email, account age).
  • To prevent fraud and abuse, such as automated tapping or duplicate claims.
  • To reply when you contact us about your account, a reward request or the game.

4. This website

  • This website does not use cookies, analytics, advertising or tracking scripts, and it has no sign-in. The contact form does not send or store anything: it only opens your own email app with your message filled in.
  • When you open an invite link, the invite page sends only the invite code to our game server (api.diamondminer.online) to check that it can be used. No cookies or personal details are sent. The server uses your IP address briefly, in memory, to limit repeated checks, and does not store it.
  • Our web hosting provider keeps standard server logs (such as IP address, browser type, page requested and time) for security and to keep the site running.
  • If you email us, we use your email address and message only to answer you and handle any follow-up, and keep them only as long as needed for that.

5. What we do not do

  • No advertising, no ad tracking and no analytics SDKs in the app.
  • We do not sell or rent your data.
  • We never ask for your password, a one-time code (OTP) or the login details of any other game, including Free Fire.

6. Who processes the data

Account and online game data are stored in Google Firebase (Authentication and Cloud Firestore). Our API server and this website run with a web hosting provider, which keeps standard technical logs such as IP addresses and request times for security. These providers act on our behalf. All connections use HTTPS.

7. How long we keep it

Account data is kept while your account exists. When you delete your account, your profile, sign-in, cloud game save, notifications and leaderboard entry are deleted. Ledger, reward and referral records are kept without your name or email so that rewards already given out stay accountable and the same person cannot claim a referral twice. Your own invite code stops working. Details are on the Account Deletion page.

8. Your choices and rights

  • Play offline without an account.
  • Leave the online leaderboard at any time.
  • Delete your account in the app (Profile → Delete account) or by following the account deletion steps.
  • Email us to ask for a copy of your data or to correct it.

9. Children

Diamond Miner is not directed at children under 13, and we do not knowingly collect their personal data. If you believe a child has created an account, contact us and we will delete it.

10. Security

All traffic uses HTTPS. Reward codes are encrypted at rest. Only the account owner can view their own codes, and every view is logged.

11. Changes

We will update this page when our practices change and show the new effective date above.

12. Contact

Email dudiaryan619@gmail.com with any privacy question or request.

Diamonds in Diamond Miner are virtual items, not money, and cannot be bought, sold or exchanged for cash. Diamond Miner is an independent game and is not affiliated with Garena or Free Fire.