RPN-45 scientific calculator icon

RPN-45 scientific calculator

Martin Krischik
★ 5.0 (123 ratings)
⬇ 5,000+ downloads
Est. actual: 5,193
Free
Released: Jun 13, 2010
No in-app purchases
No ads

Signals

4 this week · 3 positive All of this week's signals →
  • 📈Last 7 days 0 installs · 0/day since Oct 9
  • 🏆Among Productivity apps bottom 0% by installs gained this week (552 peers growing)
  • ⭐Rating ★ 3.86 → 5.00 since Oct 9
  • 🛠Updates quiet · updated 50 days ago
Installs since launch
0 2.6K 5.2K 5.2K Jun 13, 2010 today
0 installs · +1 ratings since Oct 9
Update history
— Sep 21, 2026 · seen Oct 16, 2026
Completely revised the way the desktop application is started on Windows, Linux and macOS (Bug #38). Dedicated start scripts, AppImage support for Linux and improved packaging make launching the application more reliable across all supported operating systems.<br>Updated the Android target API to the latest version so that the app remains available in the Google Play Store.<br>Updated external lin
Only the current version so far — new entries appear as the app ships updates.

RPN-45 scientific calculator is a productivity app by Martin Krischik with 5,000+ downloads (about 5.2K estimated). Rated 5.0 from 123 ratings. Released Jun 13, 2010. Install growth, rank history, SDKs and ad networks.

From the store listing: “A scientific calculator based on the classic HP-45 calculator.”