About this app
Build your sit-up habit, strengthen your core, and improve your posture and cardio fitness. Start with just 18 sit-ups a day. [TRAINING MODES] • Count — set a target rep count • Time — set a training duration • Calorie — set a calorie burn goal • Interval — sets with timed rest • Free — train at your own pace [COUNTING METHODS] • Manual tap • Accelerometer (phone on chest, auto-detect) • Camera AI rep recognition • Apple Watch sensors [DATA & HISTORY] • Calendar view + history list • 7-day / 30-day / 12-month trend charts • Home screen widget: today's and total reps • Apple Health sync (optional) • iCloud sync across devices (Premium) [PREMIUM] Unlock with a subscription: iCloud sync · full history · long-term trends · training data export [DAILY REMINDER] Set a fixed time and get a daily nudge to keep your streak alive. Questions or feedback: chenhuaizhe@gmail.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Latest release
What’s New
Completely rebuilt from the ground up! • Native SwiftUI interface — smoother than ever • 5 training modes: Count / Time / Calorie / Interval / Free • iCloud sync across devices (Premium) • Apple Health integration (optional) • Calendar history view and long-term trend charts • Home screen widget showing today's and total reps • Daily training reminder
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 1, 2026 · 1:44 PM Free
Screenshots
