Intermittent fasting, beautifully simple.
A calmer way to fast. Circa tells you whether you're fasting, how long is left, and what you've done this week—without buried menus, paywalled timers, or noisy nutrition advice. Built natively for iPhone with SwiftUI.
Start, pause, resume, or end a fast in a single tap. Adjust your start or end time after the fact when life gets in the way. The dashboard shows your current state, progress toward your window, and elapsed time at a glance.
Choose from 14:10, 16:8, 18:6, 20:4, or OMAD—or build a custom protocol by the hour. Switch anytime without losing your history.
The visual identity follows the cycle of night, sunrise, and day. Soft mesh gradients shift with your fasting state, and the interface keeps focus on your content.
Log your weight in kilograms or pounds and Circa writes it to Apple Health. Weight you add elsewhere—a smart scale, the Health app, another tracker—flows back into Circa automatically. Units follow your region and are fully overridable.
Everything lives locally with SwiftData and syncs privately across your devices through your own iCloud account. No required account. No external backend. No social feed.
Local reminders for the end of your fast, eating windows, and weekly weight check-ins—never spammy, always controllable from Settings.