ISF Watchkeeper 4 icon

ISF Watchkeeper 4

IT Energy
⬇ 10,000+ downloads
Est. actual: 10,715
Free
Released: Jul 14, 2020
No in-app purchases
No ads

Signals

3 this week · 1 positive · 1 warning All of this week's signals →
  • 📈Last 7 days +74 installs — 33% slower than the week before (+111) · 9/day since Oct 7
  • 🏆Among Productivity apps top 12% by installs gained this week (865 peers growing)
  • 🛠Updates quiet · updated 36 days ago
Installs since launch
0 5.4K 11K 11K Jul 14, 2020 today
+348 installs since Oct 7
Update history
3.0.32 Oct 8, 2026 · seen Oct 24, 2026
ISF Watchkeeper 4 - Live Compliance and Prediction Engine for Seafarers
Only the current version so far — new entries appear as the app ships updates.

ISF Watchkeeper 4 is a productivity app by IT Energy with 10,000+ downloads (about 11K estimated). +74 installs in the last 7 days. Released Jul 14, 2020. Install growth, rank history, SDKs and ad networks.

From the store listing: “Seafarer Rest Hours Compliance - Live Calculation and Prediction”