App for TI-83+ and TI-84+ calculators that adds "Ans" to the end of applicable entries.
After enter is pressed, Caboose looks at the entry and adds Ans whenever it makes sense, such as when it ends in -, sin(, or an empty entry box.
To activate, simply run the app. It will be deactivated (but not uninstalled) by a RAM clear, and so must be run after one occurs to reactivate it.
Download or build caboose.8xk and use TI Connect or TiLP to install onto your calculator.
Download or build spasm and build using the command spasm caboose.z80 caboose.8xk.