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Open the app, go to Profile tab, and tap "Restore Purchases". This will restore any active subscriptions linked to your Apple ID. Make sure you're signed into the same Apple ID you used to purchase.

No. Body pose detection is processed entirely on your device using Apple Vision Framework. Video frames are analysed in real-time and immediately discarded. No video is recorded or stored unless you explicitly choose to save a CMAS assessment to your Photo Library.

CMAS (Change of Direction Movement Assessment System) is a 9-item kinematic rubric used to assess ACL injury risk during cutting and deceleration movements. It evaluates triple flexion, knee valgus, hip abduction, trunk lean, foot plant width, penultimate step braking, ankle dorsiflexion, approach velocity, and hamstring pre-activation. Scores range from 0-11, with higher scores indicating greater risk. Based on the 2024 Marvin et al. meta-analysis.

Free gives you 25 exercises (Category 1), manual CMAS scoring, and basic AI coaching cues. Pro unlocks all exercises, automatic video-based CMAS scoring, Apple Watch haptic coaching, Gemini AI advanced analysis, and full GameCenter leaderboard access. Pro is $6.99/month or $49.99/year.

The primary AI coaching uses Apple Foundation Models which run entirely on your device — no internet required. The advanced Gemini AI analysis (Pro only) does require an internet connection as it uses Google's cloud API, but this is optional and requires your explicit consent before first use.

Open iOS Settings > tap your name > Subscriptions > find CODnFlow (or BalancenFlow / EndurancenFlow) > Cancel Subscription. You'll keep Pro access until the end of your current billing period. You can also manage subscriptions directly within the app under Profile > Manage Subscription.

All nFlow apps require iOS 17.0 or later. Body pose detection requires an A12 chip or newer (iPhone XS and later). Apple Foundation Models AI coaching requires Apple Intelligence (iOS 26+) — if unavailable, static coaching cues are used automatically. Apple Watch haptics work with watchOS 10+.

Yes. CODnFlow's CMAS system is based on the 2024 Marvin et al. systematic review and meta-analysis (12 randomised controlled trials, 381 athletes). BalancenFlow uses the BESS (Balance Error Scoring System) and SEBT (Star Excursion Balance Test) protocols. EndurancenFlow implements the MAF (Maffetone) method and polarised training (80/20) model. All exercise prescriptions reference peer-reviewed research.