PDF Lock & Unlock icon

PDF Lock & Unlock

StudyBridge LLC

⬇ 1+ downloads

Est. actual: 4

Free

Released: Dec 14, 2025

No in-app purchases

No ads

Signals

3 this week · 2 positive · 1 warning All of this week's signals →

📈Last 7 days 0 installs · 0/day since Oct 9
🏆Among Tools apps bottom 0% by installs gained this week (859 peers growing)
🛠Updates dormant · updated 327 days ago

Installs since launch

0 installs since Oct 9

Update history

1.0.1 Dec 18, 2025 · seen Oct 15, 2026

Only the current version so far — new entries appear as the app ships updates.

PDF Lock & Unlock is a tools app by StudyBridge LLC with 1+ downloads (about 4 estimated). Released Dec 14, 2025. Install growth, rank history, SDKs and ad networks.

From the store listing: “Lock or unlock PDF files offline with password protection.”