Supported Features
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VoiceOver
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Dark Interface
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Reduced Motion
hæl
cycle aware fasting
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
a fasting timer that watches the hours and writes what it sees. no coaching. no streaks. the body observed, the practice recorded.
hæl is a fasting timer that observes instead of coaching. the app watches the hours, reads the cycle, and reflects what it sees in prose. no prescription. no congratulation.
most fasting apps count down and celebrate. hæl counts and stays quiet. the interface is a single ring. the language is literary. the body's rhythm shapes what the app says and when.
THE FAST
an ensō ring marks the hours. drag to choose a duration, tap to begin. the timer carries a name that changes as the fast deepens. lauds, prime, terce, vespers. names borrowed from the canonical hours. prose arrives about what the body is doing, not what it should do. overtime continues past the goal without comment.
THE CYCLE
hæl reads the menstrual cycle through Apple Health. the ring tint shifts with the phase. fasting windows adjust. shorter during menstruation, longer during follicular. weight is read in cycle context. a gain during luteal is not a gain during ovulation. the app knows the difference. cycle tracking is optional. non-cycle users receive their own prose register, rotating by month.
THE WEIGHT
a constellation sparkline tracks weight over time. each point a breathing star. the app reads the trend and writes one observation. no graphs demanding interpretation. one line of prose.
THE LETTERS
weekly letters arrive on mondays. a retrospective of the week. the fasting, the weight, the cycle. written in the same quiet voice. monthly readings take the longer view. in the ledger, a correspondence appears, one letter at a time, on the ensō, the canonical hours, the luteal phase, autophagy, the colophon. dismissed when read. a finite pool that goes quiet when the last page turns.
THE COLOPHON
when a fast ends, a page stays. the date spelled out, the hours witnessed, a line composed from what happened. a small ceremony for something the body did. shareable.
THE LEDGER
a bound record of every fast, grouped by cycle or by month. the current group is open. past groups fold to a spine, a date range and a spelled-out count. tap to unseal the colophon beneath.
THE PRACTICE
hydration tracking with eight water drops. notifications that observe the season, the morning, the phase. never demanding, always noticing. live activities on the lock screen and dynamic island. siri shortcuts for starting a fast or checking the hours. apple watch companion with complications. ipad support.
THE FULL WITNESS (one-time purchase, $19.99)
the free app sees the fast. the full witness sees the cycle. the ring becomes phase-aware. body readings gain context. weekly letters and monthly readings arrive. weight tracking reads the cycle. the ledger letters appear. fasts beyond twenty-four hours unlock. one purchase, nothing recurring.
PRIVACY
all data lives on-device and in a private iCloud container. no account. no server of ours sees it. hæl uses standard HTTPS for StoreKit and anonymous, privacy-first telemetry. nothing else.
hæl is not a medical device. it does not diagnose, treat, or prescribe. fasts beyond forty-eight hours should be medically supervised. the app says so every time.
third edition.
the ledger letters. correspondence appears at the top of the ledger.
letters on the canonical hours, the ensō, the cycle phases, the witness stance. one at a time. dismiss each when read. it returns after a while. the correspondence does not end.
the ledger fold. past cycles collapse to a spine.
tap to open. the current cycle stays open. the rest hold their shape in a single line, like a closed book on a shelf.
navigation. the bottom of the screen holds three doors.
ledger, form, settings. always visible, always quiet.
siri shortcuts. "begin a fast" and "how long have I been fasting."
the witness answers in its own voice. no need to open the app.
spotlight integration.
spanish and french localization.
voiceover across all widgets and live activities.
improved color contrast in high-contrast mode.
dynamic type audit and layout refinements.
bug fixes and performance improvements.
The developer, KI-GEN STUDIOS LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- KI-GEN STUDIOS LLC
- Size
- 5.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 26.2 or later.
- iPhone
- Languages
English and 2 more
- English, French, Spanish
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- the full witness $19.99
- Copyright
- © 2026 KI-GEN Studios LLC