Graph 89 Free

Dritan Hashorva

About this app

Graph 89 - Emulator for the TI-89 graphing calculator.
The ROM image is not included. You need to extract this from you own calculator. Make sure you have the ROM ready before downloading this emulator.

Ratings and reviews

Exactly the TI-89 emulator you were looking for. No ads, no network connection, only the storage permission to access the ROM. Recent versions of Android let you limit the apps's scope to only one folder, so just leave it in that. My only recommendation: a higher resolution image for the calculator buttons. Also make it look better when scaled, since so many modern devices differ in aspect ratio.

Almost perfect. It would have been 100% great if you didn't have to emulate the screen font resolution of the original. It is so pixelated as to be on the verge of being unusable for a smartphone user. It even looks to me it is worse than the hardware LCD, but could be my eyes. At least add the option for smoother screen fonts, for those who actually want to use the app, vs those who just want to nurture their nostalgia.

Need a ti-89? Don't feel like carrying an extra bulky device from the 70s in your pocket? Then this is the app for you. Works great. Just like the real thing. Only problem is the testing center probably won't like seeing a cell phone on your desk. So use this everywhere you're allowed to have a cell phone. Keep the real thing on hand for every case where you're not.

What's new

v1.1.3c
Sync with the paid version.
Open the source code to: https://bitbucket.org/dhashoandroid/graph89-free