SOL — Fasting Timer & Tracker

SOL reveals what your body is doing at every stage of your fast - backed by real science.

SOL (솔) — Korean for Pine Tree. Like the pine that endures through every season, SOL stands with you through every fast.

WHAT MAKES SOL DIFFERENT

Most fasting apps just show a timer. SOL shows you what's actually happening inside your body — in real time.

As you fast, SOL guides you through each biological phase: Fed State → Insulin Dropping → Fat Burning → Ketosis → Autophagy → Deep Autophagy → Growth Hormone Surge → Immune Reset

FEATURES

• Beautiful minimal timer with progress ring • Real-time body phase updates with scientific sources • Full body timeline — see all 8 phases and your progress • Tap any phase for in-depth science and PubMed sources • Smart notifications at each milestone • Stats dashboard — track your fasting journey • Background timer — keeps running when you close the app • Light & dark mode with handcrafted watercolor textures • Home screen widget • Community pulse — you're not fasting alone • Share your results with a beautiful card

FASTING GOALS

Choose from 16h, 18h, 20h, 24h, 36h, 48h, 72h, or go Open with no time limit. Hit your goal? Extend to the next level.

DESIGNED WITH INTENTION

SOL is inspired by the simplicity of nature. No clutter, no ads, no unnecessary features. Just you, your fast, and the knowledge of what your body is doing.

All body phase information is based on peer-reviewed scientific research with direct links to PubMed sources.

Begin your fast. Know your body. Grow like the pine.