L'enfant do

HDG Dev.

About this app

🌙 L'enfant do — Your private, assisted, and 100% offline sleep diary.

Take care of your sleep with complete peace of mind. L'enfant do is a sleep tracking app built around one fundamental principle: your health data and sleep habits belong exclusively to you.

With no internet access, no trackers, and no ads, L'enfant do offers you precise, scientific, and restful tracking of your nights and naps.

━━━━━━━━━━━━━━━━━━━━
✨ WHY CHOOSE L'ENFANT DO?

━━━━━━━━━━━━━━━━━━━━━

🛡️ 100% Offline & Absolute Privacy
• No internet permissions: the app cannot technically send anything over the network.

• Your data remains exclusively stored on your phone's local memory.

• No account required, no registration, no hidden analytics.

🔋 Energy Efficiency & Zero Nighttime Battery Drain
• No persistent background service ("Foreground Service") running all night and draining your battery.

• Precise, atomic-level timestamping of sleep onset and wake-up.

• Discreet notification with a system timer and a quick button to log your night as soon as you wake up.

📊 Targeted & Mathematically Accurate Statistics
• Circular Mean of Schedules: solves the infamous "midnight trap" where a standard average between 11:50 PM and 12:10 AM would result in noon. Your average bedtimes and wake-up times are perfectly calculated.

• Welford Algorithm for stable sleep regularity and reliable standard deviation.

• Interactive trend graphs (7 days, 14 days, 30 days, 1 year) with seamless monthly aggregation.

• Intelligent calculation of night coverage rate to avoid skewing your statistics.

🔒 Local Backups & Data Sovereignty
• End-to-end encrypted backup (.enc): protect your archives with a strong password using AES-256-GCM encryption and PBKDF2 derivation.

• Universal CSV import/export: compatible with your spreadsheets and backward compatible with Plees Tracker.

• Automatic backup snapshots created before each restore to prevent accidental data loss.

🎨 Modern, Smooth, and Accessible Interface
• Soothing design in Jetpack Compose and Material 3 with a Glassmorphism effect designed to protect your eyes in the dark.

• Customizable compact mode to view more nights at a glance.

• Dynamic theme (Dark, Light, or System).

• Quick Settings tile to start or stop tracking with a single tap without fully unlocking your phone.

• Full TalkBack accessibility with text equivalents for each graph.

━━━━━━━━━━━━━━━━━━━━━
📋 IN SUMMARY
━━━━━━━━━━━━━━━━━━━━━
✓ Zero network permissions (INTERNET / ACCESS_NETWORK_STATE)
✓ Zero WakeLock permissions or persistent service
✓ Zero advertising, zero telemetry, zero freemium model
✓ Open-source, transparent, and audited code (MIT License)
✓ Lightweight, fast, and ultra-optimized

Enjoy peaceful sleep with a companion that respects your nights and your privacy.