Every fast. Fully tracked.
From the first hour to deep reset — see exactly where you are.
Active Water Fast
Metabolic Timeline
Dry Fast Mode
Mood Check-In
Fasting History
Lock Screen Widget
Most fasting apps just count time. BioState shows you the science — tracking every metabolic stage from Ketosis to Autophagy in real time.
From the first hour to deep reset — see exactly where you are.
Everything the other apps skip.
See exactly when your body transitions through all 5 biological stages. The current stage glows — so you always know where you are.
FreeForgot to start? Edit your start time retroactively and your metabolic stage updates instantly. Supports Water and Dry fasting modes.
FreeLog water intake during your fast with quick-add presets and a live daily progress ring. See how much you drank during each fast window.
FreeYour fasting stage and elapsed time live on your Lock Screen and Dynamic Island — no need to unlock your phone.
ProEvery fast saved with duration, mood, and notes. Hydration history shows daily averages and above/below goal tracking.
ProScience-based answers on every metabolic stage, mental clarity, safety, and best practices — searchable right inside the app.
FreeBioState tracks all 5 biological stages in real time.
Digesting your last meal. Insulin elevated, energy stored. The clock starts now.
Blood sugar falls. Your body shifts from storing energy to mobilizing it. Hunger peaks here — push through.
Fat burning activated. Your liver converts stored fat to ketones. Mental clarity, steady energy — this is the goal.
Cellular cleanup begins. Damaged proteins recycled, inflammation reduced. The science behind fasting's anti-aging effect.
Immune cell regeneration. Stem cell production increases. The most powerful — and most demanding — phase.
BioState Pro puts your current metabolic stage and elapsed time right on your Lock Screen and in the Dynamic Island — so you never have to open the app to check your progress.
Water fasts show in blue. Dry fasts in orange. The stage name updates automatically as you transition.
Get BioState Pro
Download and start fasting in seconds. No sign-up, no email.
Every fast and hydration log lives on your device. We never see it.
BioState is funded by one optional Pro upgrade — not your attention.
Full Spanish localization, auto-detected from your device language.
Free to download. No account. Your biology, finally visible.
