Fastyra

Fastyra turns daily fasting into a clear, visual cycle that is easy to follow. It is a premium app with no ads, subscriptions or accounts.

CHOOSE YOUR RHYTHM

Start with 12:12, 14:10, 16:8, 18:6, 20:4 or 23:1, or create a custom daily plan from 8 to 23 hours. Choose your fasting and eating times, active days, and one to six meals within your eating window.

FOLLOW THE CYCLE AT A GLANCE

A colourful dial brings your progress, planned meals and educational fasting stages together in one place. Tap a stage to learn what it represents. The stages are time-based estimates, never measurements of your body.

RECORD REAL LIFE, NOT A PERFECT STREAK

Start or finish with confirmation and adjust the time if you tapped late. Add a forgotten fast or correct a previous entry without rewriting the plan you followed that day.

SEE YOUR PATTERNS

Explore one month, three months or one year with charts for duration, goals, consistency and total time. Rest days and incomplete records remain clear, with neutral language and no guilt.

REMINDERS ON YOUR TERMS

Choose separate alerts for fast starts, planned finishes, meals and educational stages. Set advance notice, quiet hours and discreet notification text. Fastyra also supports automatic, 12-hour and 24-hour time formats.

IPHONE, WIDGETS AND APPLE WATCH

Check useful status and progress widgets on your Home Screen or Lock Screen. The included Apple Watch app shows the essentials and lets you start or finish a fast with confirmation.

YOUR DATA STAYS YOURS

Your history is stored locally on your iPhone. Fastyra has no registration, backend, advertising, third-party analytics or tracking. It does not ask for your weight, age, sex, location, contacts or Health data. Export a complete JSON backup or your history as CSV, restore when needed, or erase all local data at any time.

Available in English, Spanish, German and French, with a language selector inside the app.

Fastyra is an educational tool for time and habit planning, not a medical device or medical advice. Its stage markers do not measure glucose, insulin, ketones, fat use or cellular activity. If fasting may affect a health condition, medication, pregnancy or eating disorder, seek qualified guidance before starting. Stop if you feel unwell.