Buyer Seller Duel (Alıcı Satıcı Düellosu) — Privacy Policy
Last updated: 19 October 2026 · Developer: WeIdeas · Contact: destek@weideas.tr
In short
Buyer Seller Duel is an offline haggling game for two people on one device. You don't need an account, an internet connection or any personal data to play. There are no ads or analytics SDKs, and the app doesn't ask for location, contacts, camera or microphone access.
Data stored on your device
Player names (only the nicknames you type), unlocked markets, achievements, the item ledger, statistics, settings and an unfinished duel are kept in your device's local storage. Uninstalling the app removes them.
Data collected with the optional account
| Data | Purpose | Retention |
|---|---|---|
| Email address | Sign-in, syncing between devices | Until the account is deleted |
| Password (one-way Argon2id hash; the password itself is never stored) | Authentication | Until the account is deleted |
| Cloud save (nicknames, unlocked markets, achievements, item ledger, statistics, language/theme) | Carrying progress between devices | Until the account is deleted |
| Hashes of session tokens | Keeping you signed in | Up to 60 days |
| Hashed IP address (short-term, rate limiting) | Preventing abuse | Up to 2 days |
Purchases
In-app purchases are made through Google Play; we never see your payment details. To verify a purchase we store a hash of the Google Play purchase token, the product ID, the order number and a random device ID. This is a financial record; if you delete your account, its link to your account is removed (anonymised).
Third parties
Only Google Play Billing is used. There are no advertising, analytics, social or tracking SDKs. Your data is never sold or shared. All server traffic is encrypted with HTTPS. Server: weideas.tr.
Your rights: export and deletion
In the app, Account → Download my data exports everything we store as JSON, and Account → Delete my account deletes your account. To delete without installing the app, use the account deletion page. Deletion is immediate; backups are purged within 30 days. For other GDPR requests, email destek@weideas.tr.
Children
The game is intended for ages 13 and up and is not directed at children. Children under 13 should not create an account; any such account will be deleted once noticed.
Changes
If this policy changes, this page and its date will be updated.