Sweat2Scroll

Sweat2Scroll turns your daily fitness goal into the key that unlocks your social media.

Set a calorie, step, or workout target each morning. Until you hit it, Instagram, TikTok, Twitter, and any apps you choose stay locked by iOS Screen Time. No tricks, no shortcuts — just move your body and earn your scroll.

CORE FEATURES

BURN TO EARN
Connect to Apple HealthKit and set a daily activity goal. The moment you cross the finish line — whether that's 300 calories burned, 8,000 steps walked, or 30 minutes of exercise — your selected apps unlock automatically.

SCREEN TIME ENFORCEMENT
Powered by Apple's FamilyControls API, the shield cannot be dismissed from the lock screen or notification shade. It requires either goal completion or your accountability partner's Break-Glass code to lift.

PARTNER ACCOUNTABILITY SYSTEM
Pair with a friend, coach, or family member. They don't see your screen — they hold your Break-Glass TOTP code for genuine emergencies. Every unlock event is logged to a cryptographically signed audit trail. No fake fitness. No cheating.

WHOOP-STYLE WELLNESS DASHBOARD
Track Recovery Score, Day Strain, Sleep Score, and HRV — the same metrics professional athletes use — powered entirely by your Apple Watch and HealthKit. Know exactly how hard you pushed and how ready you are to do it again.

OPA POLICY ENGINE ON-DEVICE
The unlock decision is enforced by Open Policy Agent compiled to WebAssembly and evaluated on-device. No server round-trips. No cloud dependency. Your fitness data never leaves your phone.

DASHBOARD TABS

Home — Daily activity ring, live goal progress, shield status, partner card
Recovery — Recovery Score (0-100), HRV, Resting HR, component breakdown
Strain — Day Strain (0-21 TRIMP scale), workout sessions, heart rate chart
Sleep — Sleep Score, Deep/REM/Light stage breakdown, sleep history
Heart — RMSSD, lnRMSSD, Respiratory Rate trends over 7 days
Social — Partner leaderboard, activity feed, weekly challenges, applaud

PRIVACY FIRST

All health data stays in-memory — nothing written to disk beyond your goal settings
ECDH P256 key exchange for partner pairing (no passwords)
Break-Glass codes are TOTP (RFC 6238) — time-limited and single-use
Audit log signed and stored in your private CloudKit container

RESEARCH BACKED

Sweat2Scroll is based on published research: "Fitness-Contingent Screen Access Control Using OPA and WebAssembly on Mobile Edge Devices," presented at IEEE SoutheastCon 2026.

REQUIREMENTS

iPhone with iOS 16.0 or later
Apple Watch recommended for HRV and sleep data
HealthKit authorization required
FamilyControls entitlement (Screen Time) required

Stop doom-scrolling. Start earning it.