Marks entry on flight mode — zero internet required

Bad network is the #1 reason Cameroon teachers stop using school software. BlingsEdu solves it forever: one online login, then 30 days of offline freedom.

1. First sign-in (online): BlingsEdu downloads the offline cache + a 30-day trusted-device fingerprint.
2. Next sessions: the teacher can open the app and sign in without internet — even in flight mode.
3. Mark entry: every mark is saved to an encrypted IndexedDB queue with a Surge-Control safety net.
4. Auto-sync: when the device touches Wi-Fi or mobile data, queued marks flush automatically.

See also: How to sign up & sign in · Zero-setup curriculum