Now available on iOS & Android
Focus on
your flow.
The clean, distraction-free fasting and water tracker designed to help you achieve peak energy and mental clarity.
Streak
🔥 12 days
Water today
💧 1.8 L
Weight change
−2.4 kg
The clean, distraction-free fasting and water tracker designed to help you achieve peak energy and mental clarity.
Every detail has been considered to keep you on track without getting in the way.
Personalised fasting plans that adapt to your lifestyle, not the other way around. Pick a protocol that fits — not one that disrupts.
Monitor your metabolic health through elegant, distraction-free daily journalling. See patterns, not just numbers.
Smooth transitions between fasting and eating states to maintain mental sharpness throughout your day.
Log your water intake effortlessly. Stay hydrated during fasting windows with quick-add buttons and customisable daily goals.
Track your weight trend over time. Visual progress charts show your trajectory clearly — motivating without obsessing.
Gentle nudges when your fast starts, ends, or when it's time to hydrate. Everything is customisable and easy to silence.
ZenithFast tracks which metabolic phase you're in — so you always know what's happening inside.
From gentle introductions to advanced protocols — select a plan that aligns with your lifestyle and experience level.
Tell us your goals, experience level, and preferred meal times. ZenithFast builds your starting plan from the ground up.
One tap begins your fast. The live timer shows your elapsed time, current metabolic phase, and when your eating window opens.
Log water intake with a single tap. Quick-add buttons and a daily goal keep you hydrated throughout your fasting windows.
See your consistency heatmap, total fasting hours, and hydration trends. Progress you can actually feel and see.
ZenithFast is free to download. Premium unlocks unlimited history, advanced analytics, and custom plan building.
