Free and donate
Donate version unlocks extra features (manual backup)
Track all your car data. From fill-ups to services. Will keep track of MPG as well as upcoming services (oil, air filter, ect.) with reminders based on time and/or mileage. Export data to all kinds of geeky formats if you're into that.
UKŁ3.99 (about $6.65) or about $5 if you paypal donate via dev site.
Donate via the Dev's site and get the ability to handle encryption (cannot add this feature to the market version)
Take full control of your phone. Set automated tasks to be performed based on certain triggers. Can do so much stuff you should probably just check out the dev's site tasker.dinglisch.net
Free and Pro (~$6) versions
Pro adds batch backups (one click backup or restore everything) and a few other things. Can also get your pro key by donating to Dev via paypal. A bit cheaper.
For root users! Backup and restore all your apps and data. Set schedule's for backups to be performed at certain time on certain days, freeze apps entirely, restore apps and their important data (angry birds saves ) as well as system data (so long as it doesn't interfere with the ROM you're using) like SMS/MMS. Backups maintain their link to the market so you'll still be notified of updates after restoring an app.