RPN9: RPN Calculator

Name: RPN9: RPN Calculator
Rating: 4.5 (46 reviews)
Author: Flavio Ribeiro

Flavio Ribeiro

★ 4.5 (46 ratings)

⬇ 1,000+ downloads

Est. actual: 1,242

Free

Released: Apr 10, 2016

No in-app purchases

No ads

Signals

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

📈Last 7 days +7 installs — 30% slower than the week before (+10) · 1/day since Oct 7
🏆Among Productivity apps top 39% by installs gained this week (722 peers growing)
⭐Rating ★ 4.40 → 4.50 since Oct 7
🛠Updates quiet · updated 37 days ago

Installs since launch

+23 installs · +1 ratings since Oct 7

Update history

1.1.0 Oct 5, 2026 · seen Oct 16, 2026

API level update and bug fixes

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

RPN9: RPN Calculator is a productivity app by Flavio Ribeiro with 1,000+ downloads (about 1.2K estimated). +7 installs in the last 7 days. Rated 4.5 from 46 ratings. Released Apr 10, 2016. Install growth, rank history, SDKs and ad networks.

From the store listing: “RPN scientific calculator with unlimited stack, undo, complex numbers and stats”