Features

Everything you need. Nothing you don't.

Ayuno keeps the surface calm and the tools deep. Here is what sits under the hood.

Extended fasts

Extended and custom fasts

36h, 48h, 72h, and custom multi-day fasts, alongside familiar schedules like 16:8 and OMAD. Set the length that fits your plan, not a preset that fits ours.

Presets for 16:8, 18:6, 20:4, OMAD
Extended 36h, 48h, and 72h fasts
Fully custom multi-day durations

Ayuno screen showing a 3-day, 72-hour extended fast in progress, with per-day progress and a daily mood check-in.

The Journal

A real journal, not a scoreboard

Record how each fast felt, log your mood, and add a short note. Over time it becomes an honest history you can look back on — kept in plain language, with no shame framing.

Mood plus a short note per fast
A calm, scrollable timeline
Private by default, kept on your terms

Ayuno Journal screen showing a new entry form and a history of past entries with mood tags and notes.

Insights & achievements

Insights that inform, quietly

Streaks, achievements, weight trend, and a weekly recap. The numbers ease in calmly and point at what is working, without turning your week into a competition.

Streaks and milestone achievements
Weight trend over time
A weekly recap worth reading

Ayuno Insights screen showing this week's goal progress and a six-week streak calendar.

Coaching

Coaching that adapts to you

Personalized, rules-based coaching shaped by your own fasting history. Guidance that responds to how you actually fast, rather than the same generic tips for everyone.

Rules-based, not one-size-fits-all
Draws on your real fasting history
Steady suggestions, never pushy

Ayuno timer screen showing a 16:8 fast at 63% elapsed, with the Fasting Coach card explaining what's happening in your body right now.

Live Activities

Live Lock Screen and Dynamic Island

A live timer on your Lock Screen and in the Dynamic Island, updated by the system in real time. Check your fast with a glance, without opening the app.

Real-time Lock Screen timer
Dynamic Island support
Elapsed and remaining at a glance

9:41

Friday, July 10

Ayuno · 16:8

10h 23m elapsed5h 37m left

Apple Health

Apple Health integration

Sync weight, steps, and mindful minutes with Apple Health so your fasting sits alongside the rest of your day. You decide exactly what is shared, and you can stop anytime.

Two-way sync for weight and activity
Mindful minutes included
You control every permission

Apple Health permission screen showing Ayuno requesting access to update health data, with toggles for Mindful Minutes and Weight both enabled.

A note on safety

Ayuno supports a fasting practice with tools and reminders. It is educational and not a substitute for medical advice. If you are pregnant, managing a health condition, or taking medication, speak with a healthcare professional before fasting.

Start when you are ready

Download Ayuno and set your first fast. No account required to begin, and nothing to figure out.

See the features