my59

my59

Classic calculator emulator

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Free
In-App Purchases

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Details

Released
April 1, 2026
Updated
October 11, 2026

Features

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About

Experience the power and authenticity of a classic programmable calculator from the late 1970s directly on your iPhone, iPad, and Mac. my59 is not just a calculator app; it is a faithful, highly accurate emulator that brings a piece of computing history into the modern era. Whether you are an engineer, a student, a retro-computing enthusiast, or simply someone who appreciates the raw power of vintage programmable calculators, my59 delivers an authentic, uncompromised experience enhanced with the latest Apple ecosystem features. KEY FEATURES: Authentic Design & Feel: A meticulously crafted interface inspired by classic programmable calculators of the era, complete with a faithful keypad layout and display. Full Emulation: Supports the complete original instruction set, memory registers, and programming logic. Write and execute programs just as you would on the original hardware. Modern Workspace: Fully optimized for all screen sizes, including seamless portrait and landscape modes on iPad, and native support for Apple Silicon Macs. Built-in Documentation: Never get stuck. Full documentation, manuals, and quick references are integrated directly into the app for easy access. UNLOCK FULL POWER (Premium): my59 is free to download and try. Upgrading to Premium (available as a flexible subscription or a lifetime one-time purchase) unlocks the ultimate workstation: Complete Module Library: Get unrestricted access to all expansion packs and library modules. iCloud Sync: Keep your programs, memory state, and modules seamlessly synchronized across your iPhone, iPad, and Mac. Advanced Saving & Sharing: Save an unlimited number of custom programs and easily share them with other users. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ This app is an independent project and is not affiliated with, endorsed by, or connected to Texas Instruments Inc. or any of its subsidiaries.
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What's New in my59

1.2.1

October 11, 2026

my59 1.2.1 The Program Library is here! Version 1.2.0 shipped without its program library because of a packaging error. Sorry about that, and thank you to everyone who wrote in. Program Library More than 500 programs from TI PPC Notes, the newsletter of the TI Personal Programmable Calculator club (1980–1991), now come with the app. Find them from the credit card icon → Program Files → Program Library (on the Mac: File → Program Library). They're grouped by issue and searchable by title, author or description, and each one comes with its original instructions. Preview a program, then load it into the calculator with one tap. Also in this update - The User's Guide describes the Program Library in full. - On the Mac, the User's Guide opened from Settings now has a Close button. - Program notes read as continuous text in the preview.

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