Please add Autosave to Photoshop Touch or at least save the current state of the App on exit of the application I lost all of my work on a project.
I haven't had this happen, are you working on an Android tablet or iPad? Either of these should remember the last state of the application if you switch to another app. How did you exit the app?
That is true.
The app doesn't save the last state of the project on activity destroy.
1) you draw
2) you go to other activity (by clicking "Home", having incoming call or other...)
3) you run some more apps
4) android destroys the PS Touch activity to free some RAM (standart thing)
5) you start the PS Touch again and see that your work is lost.
But easily the most frustrating part of Photoshop for smartphones is that it tends to close quickly. Switch to your browser or homescreen for more than a minute, and Photoshop will need to reboot. That's not a big deal in and of itself, but it will also lose whatever changes you've made to your open photo without saving, no matter how long you've been working on it. This behavior will teach you to save early and often. This may not be avoidable, considering the huge memory footprint (it'll easily eat up 100MB or more) but the app should have some kind of auto-save feature in place.
More info for your developers team: http://developer.android.com/training/basics/activity-lifecycle/stoppi ng.html
Please fix it.