Emberfast
FASTING
0:00:00
of a 18h fast
You can eat in
—
CURRENT STAGE · 12–16H
Ketosis Begins
Eating windows
Fasting runs continuously between windows — across midnight, across weeks. No resets, ever.
Cloud sync
Your data saves to the cloud automatically whenever anything changes — open the app on any device and it will always be up to date.
Connecting...
Profile code — enter this on another device to access your data:
Prolonged fast mode
Enable for multi-day fasts (24h, 48h, 72h+). The clock runs until you stop it manually — eating-window boundaries are ignored while this is on.
Fasting experience
Ember calibrates her coaching tone and depth to where you are in your journey.
Safety mode
Adds health caveats and safety guidance to Ember's replies. Off by default — Ember speaks directly without routine disclaimers.
Appearance
Your journey
LEVEL 1
Spark
0 XP
Ember's read on your progress
Ask Ember to summarize the benefits you're compounding — daily, weekly, monthly, yearly. Cached until your numbers change, so it won't re-bill.
Badges
Recent fasts
Break it right
How you end a fast decides how much of the benefit you keep.
The full stage map
Ask Ember
Hi — I'm Ember, your fasting coach. Ask me anything: what breaks a fast, electrolytes, how to push to 18 hours, what's happening in your body right now…