Abs Workout is an Android fitness app that promises to give you the perfect six-pack in just six weeks.
Based on the Aerobic Weider Six program, Abs workout sets six exercises to repeat every day for 42 days. There's a workout guide that takes you through each session, with diagrams of each exercise, a timer, and a text-to-speech female voice to direct you. You can log the history of your workouts in the app.
Abs Workout is a decent tool for toning abs, though the workouts can be pretty punishing.