Still cycling
Your strong weeks, finally used well. Vida sets each fasting window from your cycle.


The first fasting app that adapts to your hormones, whether you’re cycling, in perimenopause, or in menopause.
Free on iPhone. Vida Plus is optional.
The week after your period is your strongest
Your energy runs good or bright in the days once your period ends.
Long fasts cost you sleep
Past about 16 hours, your nights come out rougher.
A good night means a better day
Most of your good nights were followed by a good day.
Your cycles are getting less predictable
Your cycle length has started moving around instead of holding steady.
Your mood drops before your period
In the days before your period your mood runs low, tearful or on edge.
Eating earlier helps you sleep
On the nights you finished eating around 7pm, your sleep held up better.
So most apps hand you a plan built for a body that isn’t yours.
Vida reads the rhythm your body is in right now, and shapes every window around it.
Every other fasting app
One flat line, all month.
Stronger
Gentler
The same 16 hours, whatever kind of week you’re having.
Vida
Your rhythm, followed.
Stronger
Gentler
Longer windows when you’re running strong, gentler ones when you’re not.
Your strong weeks, finally used well. Vida sets each fasting window from your cycle.


Built for the swing, not the average. Vida reads your symptoms and shifts each fasting window.


Steady beats heroic. Vida finds the fasting rhythm that works for you.


Vida sets each fasting window from your cycle.
No white-knuckling a long fast on your hardest week.
Every plan comes with the reason behind it.
Vida reads your symptoms and shifts each fasting window.
An off week comes back explained, not as a broken streak.
Patterns you can bring to your doctor.
Vida finds the fasting rhythm that works for you.
Rest is built in, and it never costs you progress.
Progress in energy and hours, not weight.
01
Every window comes with the reason behind it, built from your phase, your stage, and how you actually slept. Never a one-size number.
02
Vida maps your strong weeks and your gentler ones onto your real rhythm, so you can see the plan coming instead of guessing at it.
03
Check in, and Vida connects the dots you can’t see from inside, like hunger that tracks your hormones rather than your willpower.
Gentle observations from your own logs, never medical advice.
04
Watch the fast fill, stage by stage, with each claim labeled by how strong the evidence actually is.
05
Weekly, monthly, and yearly reflections drawn from your own logs, richer the longer you use it.
06
Vida logs the days you rested the same way it logs the days you fasted, and gives them back to you at the end of the year.
Live Activity
Start a fast and it stays with you. The hours count on your Lock Screen and in the Dynamic Island, so you never have to open the app to check.
In the Dynamic Island
Vida comes with a library of plain-language guides, each one built on real research into women’s bodies. Where the evidence is thin, we tell you that instead of guessing.
What other apps tell you
Autophagy switches on at 16 hours.
What the research says
That number comes from mice, not women.
What other apps tell you
Longer fasts are always better.
What the research says
Past a point the returns flatten.
What other apps tell you
Fast the same way every day.
What the research says
Your body is not the same every day.
Your data is yours. We never sell it. What you log stays on your phone, and there are no ads.
No diet. No streak to keep. Just your body, and where you’d like to begin. Vida meets you where you are and helps you fast with clarity and confidence.
Need help with the app, or want to tell us something?
Support questions, ideas, complaints, all of it. We answer every email.