Privacy Policy
1. Who we are
Dan Tech Indiv. (“Dan Tech”, “we”) is an independent software studio operated by Danh Tran in Vietnam. We publish Duoly in Love and Kim Tài · Tick Vàng Online. For anything in this policy, write to [email protected].
2. This website
dantech.app has no accounts, no advertising and no tracking pixels. Our hosting provider keeps standard server logs (IP address, browser, pages requested) for security and reliability. If you subscribe to Ship notes we store your email address to send product updates; every email carries an unsubscribe link. Messages sent through the contact page travel as ordinary email to [email protected].
3. Our apps
Each app links its own detailed policy from its store listing. In short: Duoly in Love treats notes as private content — the full text opens only when you tap it; widgets, notifications and other surfaces use generic content or limited metadata; the app never simulates your partner's activity; the only ads are rewarded ads you choose to watch, personalised only with your consent where the law requires it. Kim Tài stores the quantities and cost you record locally on your device; reference prices come from listed providers; the app shows ads through Google AdMob, and Premium removes them.
4. Purchases
Premium is billed by Google Play or the Apple App Store and managed through RevenueCat. We receive purchase status, never your card details. Restores use the same store account that made the purchase.
5. Third-party services
Depending on the app: Google Play and App Store (distribution, billing), RevenueCat (entitlements), Google AdMob (ads), Firebase (crash reports, push), Supabase (Duo pairing and chat). Each processes data under its own policy; we configure them to collect the minimum the feature needs.
6. Your rights
You can access, correct or delete your data. In Duoly, delete notes, photos and your account from the Us tab. In Kim Tài your book lives only on your device. For anything else, email us; we answer within 2–3 working days and act on verified requests without charge.
7. Children
Our products are not directed to children under 13, and we do not knowingly collect their data. If you believe a child has provided us data, contact us and we will delete it.
8. Changes
We post changes here with a new effective date. Material changes to an app's data practices are also announced inside that app.