I have just published the initial Android version of AlmostTI, which emulates graphing calculators made by Texas Instruments:

https://play.google.com/store/apps/details?id=com.fms.ati

AlmostTI will turn your Android device into a fully functioning Texas Instruments graphing calculator. It emulates TI-85, TI-86, TI-82, TI-83, TI-83+, TI-83+ Silver Edition, TI-84+ Silver Edition, and TI-73 calculators. And yes, if you have got a tablet, it will make a really big calculator. AlmostTI also lets you save your calculations at any point and then select from several previously saved tasks.

To run AlmostTI, you will need at least one calculator system ROM. AlmostTI does not include any calculator ROMs on its own, as they are intellectual property of Texas Instruments. You should place your own ROM, preferably dumped from the calculator you own, onto your internal storage. AlmostTI recognizes following ROM files (in upper case): TI85.ROM, TI86.ROM, TI82.ROM, TI73.ROM, TI83.ROM, TI83P.ROM, TI83SE.ROM, TI84SE.ROM.

For general information about AlmostTI, see its homepage. For Android-specific help, please see this web page. And to discuss your problems with the author and other users, use this discussion group.

ALL CHANGES IN THIS VERSION:

• Initial release of AlmostTI for Android.
  
• To invoke the menu, touch screen above the calculator display.
  
• Fixed screen brightness control in TI85/TI86.
  
• Fixed accidental exit after loading state.
  
• States are now saved in the .STA format.
  
• Automatically saving state on exit.
  
• Added multiple slots for saving states for each calculator model.
  
• Added code to search for calculator ROMs automatically.