Graph 89 Free

4.2
5.2K reviews
500K+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image

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.
Updated on
Oct 17, 2013

Data safety

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Ratings and reviews

4.3
4.82K reviews
Daniel Admassu
April 26, 2022
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.
25 people found this review helpful
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A Google user
May 29, 2019
Outstanding Calculator App. Though it was complicated to make it fully operational, after figuring it out, it is the best calculator you can have. In many ways is better than the calculator itself. But you should have the actual calculator and a PC. The app is having the TI89 Titanium inside my mobile, I removed the batteries of the actual one and store it away. I don't have to worry about discharged batteries (4 AAA) or the leakage of this batteries damaging the calculator. I love the app.
36 people found this review helpful
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Ant
August 25, 2022
Great app, loads better than any other android calculator Ive found and no ads at all. Im really very glad this exists - great work guys! Update - been using this a lot and really happy with it. The only thing Ive found that doesnt work is the Mario 68K game but that's hardly a big deal. One addition that would be nice if possible is to be able to use the phones keyboard (maybe after tapping in display area?) this would make programming so much easier. Still the best calculator for android IMO
5 people found this review helpful
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What's new

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