Track every fast with precision. Follow your body through 9 biological stages, log health metrics, and celebrate streaks — all privately on your device. No ads. No annoying signups. Just fasting.
Built by a faster, for fasters. Every feature exists because it matters — nothing bloated, nothing hidden.
A beautiful circular fire-gradient progress ring tracks every minute of your fast. Choose from 6 proven fasting protocols — 12:12, 16:8, 18:6, 20:4, OMAD, or Flex mode for no time-limit fasting.
Watch your body transform in real time. From Fed State to Immune Renewal at 72h+, each stage is mapped live on your timer ring with scientific descriptions and peer-reviewed citations.
A monthly calendar shows every fast as a color-coded bar. Color intensity reflects duration — light for short fasts, deep gold for 24h+ feats. Tap any day to review or edit.
Most apps just show a countdown. Freedom Fast maps your fast against 9 distinct biological stages, each backed by peer-reviewed research.
Stage markers animate on your timer ring as you fast — showing exactly where you are in your body's transformation. From the Fed State all the way to Immune Renewal at 72+ hours.
Digesting your last meal. Insulin is elevated.
Blood sugar normalizing. Glycogen reserves depleting.
Liver starts producing ketones for energy.
Cells begin recycling damaged components.
Peak fat burning. Growth hormone elevated.
Immune system begins regenerating. Deep cellular repair.
Mitophagy peaks — damaged mitochondria recycled. BDNF rises.
GH increases up to 5×, preserving lean muscle while maximising fat oxidation.
Stem cells regenerate a fresh immune system. The deepest cellular reset possible.
Track total fasts, completion rate, average duration, and longest fast. See your growth at a glance.
Current streak and personal best shown side by side. Build consistent habits and break your own records.
Log weight, waist, water, electrolytes, blood glucose, ketones, and mood. Visualized as trend charts.
Optional local push notification fires the moment your fasting goal is reached — even when the app is closed.
Fully themed for both dark and light preferences, with automatic system-aware switching.
No accounts. No servers. No data collection. Everything lives on your device. Always.
Fasting changes your body. Freedom Fast lets you track those changes — weight, waist, ketones, glucose, electrolytes, mood, and water — day by day.
The biological stages in Freedom Fast are grounded in published research. These are the studies behind the science.
Fuel Metabolism in Starvation
Cahill GF Jr.
Flipping the Metabolic Switch: Understanding and Applying the Health Benefits of Fasting
Anton SD et al.
Alternate-day fasting in nonobese subjects: effects on body weight, body composition, and energy metabolism
Heilbronn LK et al.
Mechanisms of Autophagy — Nobel Prize in Physiology or Medicine
Ohsumi Y
Short-term fasting induces profound neuronal autophagy
Alirezaei M et al.
Resting energy expenditure in short-term starvation is increased as a result of an increase in serum norepinephrine
Zauner C et al.
Intermittent metabolic switching, neuroplasticity and brain health
Mattson MP et al.
Fasting: Molecular Mechanisms and Clinical Applications
Longo VD & Mattson MP
Prolonged Fasting Reduces IGF-1/PKA to Promote Hematopoietic-Stem-Cell-Based Regeneration and Reverse Immunosuppression
Cheng CW et al.
Fasting enhances growth hormone secretion and amplifies the complex rhythms of growth hormone secretion in man
Ho KY et al.
Augmented growth hormone secretory burst frequency and amplitude mediate enhanced GH secretion during a two-day fast
Hartman ML et al.
Freedom Fast stores everything on your device — no accounts, no servers, no cloud sync. We've deliberately built a product that cannot access your data, because it never touches our infrastructure in the first place.
Download Freedom Fast for free. No sign-up. No credit card. Just open the app and start fasting.