Graph 89 is a niche app, with 3.5 thousand installs. It doesn't have enough ratings yet to judge what users think.
Graph 89 is made and published by
Perihelion Development.
AppBrain is an independent app data site and isn't affiliated with Perihelion Development.
The app name, icon, screenshots and description belong to Perihelion Development and are shown as
published on Google Play.
About Graph 89
“A TI Graphing Calculator Emulator”
Graph 89 is a tools app developed by Perihelion Development.
Install Statistics
Graph 89 has been installed 3.5 thousand times. In the last 30 days, the app was installed 820 times.
User Ratings
Graph 89 is rated 5.00 out of 5 stars. The rating is based on 35 ratings.
App Information
Graph 89 is freely available from Google Play. The app size is 6.29 MB. The latest version available is 1.3.1. The last update was on September 3, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play since February 2026.
Description by Perihelion Development(from Google Play)
No ROM images are included. You can extract one from your own calculator or if you have a physical device, download an OS upgrade image from TI.
This is a fork of Graph 89 to support 64-bit OS architectures and the modern Android Storage Access Framework.
This app is not actively being improved. Special thanks to eanema for their work getting it working with 64-bit devices. https://github.com/Perihelion-Development/graph89
Recent changes: Fixed crashing issue in version 1.3.0 on launch for some devices. Fixed issues with sending files to and from the calculator (changed how threading works as part of this) Increased target SDK for Play store policies. Aligned 64-bit libraries to 16KB pages for Play store policies.
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Please fix the bug that is currently crashing the calculator when attempting to send programs and data to TI files such as .89p and .89e files. When attempting to do so by navigating to var-link and choosing F3, then Send, the calculator crashes in a bad way. For me this is a major deficiency, which prevents me from using this otherwise fine piece of software. I hope the developers fix this soon.
★★★★★Arthur Redgate· Jun 25, 2026
Love the app on my Pixel 8, but I can't access the settings once I've loaded the rom. On older phones I'd press the back arrow, and it would bring up the menu, pressing it twice would close the app. Now hitting back once closes the app and no menu pops up. If this gets fixed this will once again be amazing. Edit: found the emu button which brings up the menu. Incredible!
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
