Open the page. Pick what you're observing. Track the fast. That's the whole loop. Your data stays where you put it.
● Apps DeskFASTEN liveON-deviceNO account§03
Section III · The Apps Desk
nenLabs
AppsFull privacy policy
Apps · 01·Web·Privacy-First
Fasten — fasting tracker
A fasting tracker for Ramadan, intermittent fasting, Orthodox fasting, Jewish fasts, and custom challenge fasts.
Privately on-device. No account.
Designed to work without accounts, analytics, advertising SDKs, or cloud storage.
16:00HOURS · LIVE
FASTEN
Plate I · Clock face16-hour cycle. Nothing leaves the page.
Status
Live
Account
None
Server
None
Price
Free
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Supported
seven traditions · plus custom01
Ramadan
Dawn-to-sunset fasting through the holy month.
02
Intermittent
16:8, 18:6, 20:4, OMAD, and custom windows.
03
Orthodox
Wednesdays, Fridays, and the four major fasts.
04
Jewish
Yom Kippur, Tisha B'Av, and the minor fast days.
05
Catholic
Fridays, Ash Wednesday, Good Friday, and Lent.
06
Bahá'í
The nineteen-day Fast of the Bahá'í calendar.
07
Ethiopian
Ethiopian Orthodox fasts including Tsom and Filseta.
08
Custom
Any window, any duration. Your fast, your rules.
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Features
on-device · dark UI · v2What Fasten does
Fast calendarFull history, per-tradition colors
Prayer timesComputed on-device, no cloud
Suhoor / Iftar alertsLocal notifications only
LocationOptional, on-device only
ThemesDark · per-tradition accent colors
PlatformiOS · v2.0
Calendar built around your tradition.
Each fast type has its own accent color. Completed, missed, and optional days are distinct at a glance.
Prayer times — Fajr, Suhoor, Iftar — are computed entirely on your device using your location. No request ever leaves your phone. Location access is optional; you can enter a city manually.
Notifications fire locally. Suhoor reminders, Iftar countdowns, fast-start and fast-end alerts. None of this touches a server.
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Privacy
stays on your deviceWhat Fasten doesn't do
Personal dataNot collected
Login / accountsNone
Analytics / trackingNone
Ad identifiersNone
Remote crash reportsNone
Third-party SDKsNone
No accountNo analyticsNo adsStored locally
Stored on your device.
Fasting records, traditions, reminders, prayer-time data — all local.
Information stays on your device unless you back up your phone through your own platform tools.
Location and notification permissions are optional. Used on-device only — for prayer-time calculations and local reminders like suhoor, iftar, fast start or end alerts.
Clear app data or uninstall to remove everything. You're in control.
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Contact
info@ngenlabs.orgSend a letter.
Goes straight to info@ngenlabs.org. Opens in your mail client.
No tracking. No autoresponder.