JRPN 15C: RPN Calculator inspired by HP 15C Scientific Calculator

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Antivirus & safety scan results

Scan Date: Jun 2, 2026 Software Version: 2.1.20

Status: ✅ Trusted & Safe to install This app is signed by Bill Foote with trusted and verified digital signature and it will updated existing JRPN 15C installations Certificate fingerprint: 0e026ba7ade069bdcc5801806a9480ab57768c16 Issuer: C=Unknown, ST=Unknown, L=Unknown, O=Unknown, OU=Unknown, CN=Jovial Software How we verify APK files security

JRPN 15C Calculators app for Android description

JRPN 15C is a scientific calculator that simulates an HP-15C. It simulates the appearance and behavior of the original, including the seven-segment display, and the little blink you get when entering numbers. Includes complex math, matrices, numerical integration, solving for the root of an equation and statistics. Very state of the art for 1982!

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Specifications

Package Name	com.jovial.jrpn15
Requirements	Android 7.0 (Nougat API 24)
Author	Bill Foote
APK Size	51.1 MB
Categories	Productivity and Business, Calculators, Office Suites
Source Code	https://github.com/zathras/jrpn