Zimem: Qada Prayer Calculator

Stop guessing how many prayers you owe.

Zimem DERIVES your missed prayer and fasting debt from your date of birth and the periods you declare, using established jurisprudential rules - and it shows an honest range, never a single false-precise number.

Then it splits that range into a few seconds of work per day.

HOW IT WORKS
• Three questions, thirty seconds: year of birth, gender, the age you started praying regularly.
• The result screen shows your debt per prayer as a range, plus the assumptions behind it.
• Every assumption is editable in one tap. The more you correct, the narrower the range.
• Add travel, illness, menstruation and postpartum periods and the calculation sharpens.

WHY A RANGE, NOT ONE NUMBER
Nobody remembers the exact day they reached puberty. Pretending otherwise and showing a four-digit certainty is both wrong and paralysing. Zimem never hides uncertainty: it tells you what it does not know, shows the low and high end, and narrows the band as you refine your answers.

IT APPLIES RULES, IT DOES NOT ISSUE RULINGS
Zimem gives no fatwa. It applies established rules - each one cited in the app - to the facts you declare, and does the arithmetic. Under every result you get the reasoning chain: which rule, from which source, at which step.

Where the schools of law disagree, the disagreement is shown on the same screen rather than resolved silently. No ruling enters the engine without a citable source; that link is checked automatically on every build.

FOR WOMEN
Menstruation and postpartum days are deducted from the prayer debt and recorded as fasting make-up days. School-specific maximum durations are applied. The app asks when your cycles ended and stops deducting from that date on.

The accuracy of this calculation is ALWAYS FREE. We will not show a woman an inflated number and charge her for the correct one.

PRIVACY IS ARCHITECTURE HERE, NOT A CLAIM
• No server. No account. No sign-in.
• No location permission. You pick your city yourself.
• No ads, no analytics, no tracking, no third-party SDKs.
• Your data stays on your device and can be erased permanently in one step.
• Our App Store privacy label reads: Data Not Collected.

WHAT IS NOT IN HERE
No Quran text, no translation, no hadith, no recitation audio. No qibla compass, no tasbih, no social feed. No AI - the engine is deterministic and the same input always produces the same result.

FREE FOREVER
The full derivation engine, the debt range, the reasoning chain and its sources, separate counters for each of the five prayers and witr, one-tap logging, prayer time notifications, the home screen widget, school selection, and the menstruation and postpartum deductions.

ZIMEM PRO - PAY ONCE
No subscription. A single purchase.
• Pace simulator: "if I make up two days' worth a day, when am I done?"
• Target-date planning and comparison of pace scenarios

All three price options unlock exactly the same features. The only difference is an alternate app icon and a thank-you on the Sources screen; you decide how much to contribute.

One person builds this app. What you pay goes into building it.

IMPORTANT
Zimem's output is informational and is not a binding religious ruling. For your own situation, consult your local mufti's office or a scholar you trust.