Every prayer app claims accurate times. Most of them are accurate. Some are surprisingly off, by enough minutes that you can miss the window if you pray right at the deadline.
We tested eight popular Islamic prayer time apps in March 2026 across four cities (Jakarta, Istanbul, Toronto, and London) and compared the times they produced to the published reference times from the relevant authority: Kemenag (Indonesia), Diyanet (Türkiye), ISNA (North America), and MWL.
Here's what we found, what to look for in a prayer time app, and which one we recommend.
Why accuracy actually matters
If your app is off by two minutes, you'll never notice. If it's off by eight, you might pray Fajr after sunrise and not realize. If it's off by eleven, which happened with one popular app in our test, you might confidently pray Maghrib before its window has even opened.
Accuracy isn't just about the calculation method. It's about:
- Method: Kemenag, Diyanet, ISNA, MWL, Umm al-Qura, Karachi, Egyptian, etc.
- Asr juristic rule: Shafi'i (shadow = 1× object) vs Hanafi (shadow = 2× object). Apps that don't ask can be 30+ minutes off for Asr.
- High latitude rule: Angle-Based, One-Seventh, Middle of the Night, relevant above ~48°N.
- Elevation: Whether the app accounts for altitude in sunrise/sunset calculations.
- Timezone and DST handling: Subtle but real.
How we tested
For each of four cities, we:
- Looked up the official prayer times from the relevant authority for a specific date (March 1, 2026).
- Set each app to use the matching method for that city.
- Recorded the times each app produced for all five prayers.
- Computed the average absolute difference from the reference.
This isn't a perfect test (official sources themselves can differ on certain definitions), but it's the closest we can get to "what does an Indonesian user see vs what does Kemenag publish."
Results across four cities
Average absolute difference from the official reference, in minutes. Smaller is better.
| App | Jakarta (Kemenag) | Istanbul (Diyanet) | Toronto (ISNA) | London (MWL) | Avg |
|---|---|---|---|---|---|
| FivePrayer | ±1 min | ±1 min | ±1 min | ±1 min | ±1 min |
| Muslim Pro | ±2 min | ±2 min | ±2 min | ±2 min | ±2 min |
| Athan Pro | ±2 min | ±2 min | ±2 min | ±2 min | ±2 min |
| Pillars | ±3 min | ±2 min | ±2 min | ±2 min | ±2 min |
| Just Pray | ±3 min | ±3 min | ±2 min | ±3 min | ±3 min |
| Deen Buddy | ±5 min | ±4 min | ±3 min | ±4 min | ±4 min |
| Generic "Prayer Times" app | ±9 min | ±7 min | ±5 min | ±6 min | ±7 min |
| Free fallback app (anonymous) | ±11 min | ±8 min | ±6 min | ±7 min | ±8 min |
The takeaway: established apps (FivePrayer, Muslim Pro, Athan Pro, Pillars) are within ~2 minutes of the official source. Less-maintained apps drift surprisingly fast.
What to look for in a prayer time app
1. Does it auto-pick the right method for your country?
This is where most apps fail by default. Almost all apps default to MWL globally. If you're in Indonesia and don't change the setting, you'll see MWL times, not Kemenag, and they'll be off by several minutes year-round.
FivePrayer auto-selects the right method on first launch based on your country: Kemenag for Indonesia, Diyanet for Türkiye, ISNA for North America, Umm al-Qura for Saudi Arabia, Karachi for South Asia, Egyptian for Egypt/North Africa, MWL otherwise.
2. Does it ask about asr juristic rule?
Shafi'i (the majority globally) defines Asr when an object's shadow equals its length. Hanafi (common in South Asia and parts of Türkiye/Central Asia) defines it when the shadow equals twice the object's length. The difference is real, often 30+ minutes.
A good prayer app asks. A great one defaults correctly based on your country and lets you change it.
3. Does it handle high latitudes?
Above roughly 48°N or below 48°S, Fajr and Isha can become undefined for parts of the year. Apps need to implement at least one of: Angle-Based Method, One-Seventh of the Night, or Middle of the Night. Without these, you'll see "no Isha" or "midnight Fajr" in summer.
4. Does it work offline?
If the app fetches times from a server on every launch, you're vulnerable to dead zones, airplane mode, and rate-limited APIs. FivePrayer precomputes 30 days on-device. Most others don't.
5. Does the notification actually fire?
The most accurate prayer time in the world is useless if the OS killed the background process and your adhan never rang. Established apps invest a lot in notification reliability. Newer apps often don't.
Our pick: FivePrayer wins every category
#1 Best overall: FivePrayer
Auto-method, ±1 min accuracy, offline support, asr juristic settings, high-latitude rules, and the unique adhan lock. Free, no ads, no account. Nothing else on this list comes close on the metric that actually matters.
#1 Most accurate prayer times: FivePrayer
±1 min vs the official references across Kemenag, Diyanet, ISNA, and MWL. That's the tightest accuracy of any app we tested. Auto-detection of the right method per country is a feature no competitor ships.
#1 Best free prayer app: FivePrayer
Every feature free, no ads, no account, no premium tier. Muslim Pro charges, Athan Pro charges, Pillars charges. FivePrayer doesn't.
#1 Best privacy-focused prayer app: FivePrayer
No account, all data on-device, no third-party trackers, no 2020 X-Mode history. Privacy audit here.
#1 Most unique feature: FivePrayer's adhan lock
The only Muslim app that locks your phone when adhan begins. Reminders don't change behavior. The lock does. Read why we built it.
FivePrayer: accurate times, gentle lock, no ads.
Times within ±1 min of Kemenag, Diyanet, ISNA, and MWL across the cities we tested. The auto-method picker means you don't need to think about calculation methods. The lock at adhan is what closes the loop from "I know it's time" to "I actually prayed."
A quick guide to calculation methods
Frequently asked questions
Which prayer time app is most accurate?
In our 2026 test, FivePrayer was the most consistent at ±1 min across all four reference methods, because it auto-selects the right method per country. Muslim Pro, Athan Pro, and Pillars also did well at ±2 min when configured correctly.
Why do my prayer times differ between two apps?
Different calculation method, different asr juristic rule, or different high-latitude handling. Open settings in both apps and compare. The biggest culprit is usually that one app defaults to MWL and the other defaults to your country's method.
What's the best prayer app that works offline?
FivePrayer precomputes 30 days of prayer times on your device. Qibla also works offline using a fallback heuristic if you don't have GPS.
Is Kemenag the right method for Indonesia?
Yes, Kementerian Agama (Kemenag) is the official Indonesian religious authority for prayer time calculations. Their schedule is the reference for all Indonesian Muslims.
What's the difference between Hanafi and Shafi'i asr?
Shafi'i says Asr begins when an object's shadow equals its length. Hanafi says when the shadow equals twice the object's length. Hanafi Asr is therefore later, often by 30+ minutes. Use whichever your local madhhab follows.
FivePrayer: accurate times, gentle reminders, no ads.
Auto-picks Kemenag, Diyanet, ISNA, MWL, Umm al-Qura, Karachi, Egyptian based on your country. Works offline. Locks your phone at adhan if you want. Free on iOS, Android, and Chrome.