This app acts as a personal fitness coach, using your device's motion sensor to automatically count sit-ups. It provides a structured training plan, voice coaching, and motivational features like leaderboards and streaks to help you achieve your core strength and abs goals.
Reviews of 100 Sit are mostly positive: the Health & Fitness app is rated 4.9/5 from 139 App Store ratings. What users like most: motivates users to continue, reliable and trustworthy. Top complaints: inaccurate counting, settings not intuitive. Summarized from real user reviews.
2.15.0
October 19, 2026
New • Get a heads-up when a streak freeze has saved your streak. Fixed • Fixed a freeze that could happen right after the face positioning step when starting a push-up or plank session.
MoreAccess to all PRO features
4 issues
Counts sit-ups inaccurately
App freezes after in-app purchase
4 requests
Allow filters to be set permanently
Wish for a way to go back
This app functions as a personal fitness coach to help you achieve a flat belly and six-pack abs. It automatically counts your sit-ups using your device's motion sensor, provides a structured training plan with voice coaching, and includes motivational features like leaderboards and streaks to track your progress.
The app utilizes your iPhone or iPad's motion sensor to automatically detect and count your sit-ups. It can also count based on your nose proximity to the device's sensor, ensuring accurate tracking of your repetitions.
The app is free to download and use, offering core functionality for tracking sit-ups and following a training plan. However, it does contain in-app purchases, which may unlock additional features or content for users who wish to enhance their experience.
The app offers scientifically developed training plans that adapt to your fitness level and aspirations. You can choose from three intensity levels, progressing from 0 to 100 sit-ups, to gradually build your core strength and endurance.
Yes, the app features a captivating leaderboard system where you can measure your progress against friends and users worldwide. You can also create custom leaderboards for groups, such as colleagues or family, to foster friendly competition.
