Privacy Policy
Last updated: May 21, 2026
Sync ("the app") is operated by Silvergrid Technologies LLC ("we", "us"). This policy explains what we collect, why, and the choices you have. Questions? Email info@silvergridtech.com.
Information we collect
- Phone number. Your phone number is your account identity. We verify it by SMS and use it so friends can find you and so you can send and receive times.
- Profile. A display name and a unique username you choose.
- Friends you add. When you add a friend from your device contacts, we store that person's name and phone number on your account so we can deliver times to them. We do not upload your entire address book — only the contacts you explicitly add.
- Gameplay data. The times you send and acknowledge, your score, and which patterns you've discovered.
- Device & usage data. A push-notification token, basic app analytics (e.g. screens viewed, actions taken), and crash diagnostics, to keep the app working and improve it.
How we use it
- To operate the game: matching friends by phone number, delivering times, scoring, and leaderboards.
- To send push notifications when a friend sends you a time (you can mute these in Settings).
- To diagnose crashes and understand how features are used so we can improve them.
How information is shared
- With other users: your display name, username, and score are visible to friends and on leaderboards. When you send a time, the recipient sees your name. We do not show your phone number to other users.
- Service providers: we use Google Firebase (authentication, database, messaging, analytics, crash reporting) and Apple (push delivery, the App Store). Their handling of data is governed by their own policies.
- We do not sell your personal information, and we don't run third-party ads.
Inviting friends
If you invite someone who isn't on Sync, your phone's Messages app opens a text you choose to send. We don't send messages on your behalf, and we don't store the numbers of people you invite who haven't joined.
Your choices & rights
- Notifications: mute them anytime in Settings, or in iOS Settings.
- Delete your account: Settings → Delete Account removes your profile, your sent times, your friends list, and your username reservation. This is permanent.
- To request a copy of your data or ask a privacy question, email info@silvergridtech.com.
Data retention
We keep your account data while your account exists. Sent times expire and become history shortly after they're sent. When you delete your account, we delete your associated data from our active systems.
Children
Sync is not directed to children under 13, and we don't knowingly collect their data.
Changes
We may update this policy; we'll revise the date above and, for material changes, notify you in the app.
Contact
Silvergrid Technologies LLC · info@silvergridtech.com · silvergridtech.com