# GO-25 SciRPN

> Utilities

Canonical page: [https://chrome-stats.com/d/id408249517](https://chrome-stats.com/d/id408249517)

## Overview

- **ID:** `id408249517`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Steve Lidie
- **Category:** Utilities
- **Rating:** 4.70 / 5 (23 ratings)
- **Version:** 26.5.1
- **Last updated:** 2026-06-11
- **First published:** 2011-03-20
- **Size:** 18 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/go-25-scirpn/id408249517)
- **Website:** [http://www.bigcatos.com/BigCatOs/go-2x-scirpn/go-25.html](http://www.bigcatos.com/BigCatOs/go-2x-scirpn/go-25.html)
- **Privacy policy:** [http://www.bigcatos.com/BigCatOs/BigCatOSPrivacyPolicy.pdf](http://www.bigcatos.com/BigCatOs/BigCatOSPrivacyPolicy.pdf)

## Description

GO-25 SciRPN simulates the venerable HP-25C Programmable Scientific Calculator from 1976. Virtually indistinguishable from the real item in operation, GO-25 is a powerful yet simple retro calculator.

• RPN (Reverse Polish Notation)
• 10-digit LED calculator display, 10-99 to 10+99
• Four stack registers with roll down
• Ten storage registers with arithmetic memory operators
• Math, trigonometric, polar/rectangular, sexagesimal/decimal, logarithmic, statistical, power and other miscellaneous functions
• Programmable, with annotated program listing, and memory for 99 program steps
• Library of Sample Programs
• Fast, slow or single step program execution
• Program import via pasteboard or from other Apps
• Program export via printer, email, pasteboard or to others Apps
• iTunes program File Sharing
• Two additional windows with views of:
	◦ stack/storage registers
	◦ keystroke log
	◦ program source code
	◦ program documentation
• Copy-from and Paste-to the calculator display
• Simple Paper Tape annotations

## Rankings

- #233,083 — Overall

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- [My RPN Calculator](https://chrome-stats.com/d/id1451441996)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id408249517)