Ab core back Workout Fitify is a free iPhone app developed by Martin Mazanec in the Lifestyle category, specifically in Health & Fitness. This app allows users to challenge their abs, core, and back muscles in just a few minutes. It aims to help users achieve a six-pack look and strengthen their back to avoid pain and stiffness.

The app offers three unique workouts: Insane Six Pack, Complex Core, and Strong Back. Insane Six Pack focuses on achieving sexy, flat, and firm abdominal muscles. Complex Core targets core muscles for body stability and good posture. Strong Back provides exercises for the lower and upper parts of the back to strengthen it and prevent pain.

With over 80 bodyweight exercises, Ab core back Workout Fitify offers a variety of workout options. The app includes a voice coach, clear HD video demonstrations, and works offline. Users can build custom workouts by choosing exercises, duration, and rest intervals.

Reviews from users praise the app for its ease of use, good routines, clear guidance, and great variety of exercises. Fitify Apps, including Ab core back Workout Fitify, aim to be users' personal trainers, helping them become stronger, leaner, and healthier.