Five times a day, and the phone has to be right
Install two prayer time apps side by side and they will disagree, often by five or ten minutes on fajr and isha. Neither is malfunctioning. They are using different calculation conventions, and the difference between those conventions is a matter of established scholarly practice rather than software quality. The useful thing an app can do is tell you which convention it is using and let you change it. The useful thing you can do is set it to whatever your local mosque follows, once, and then stop comparing.
Why two apps give two answers
Dhuhr, asr and maghrib are tied to the position of the sun and vary little between methods. Fajr and isha are the awkward ones, because they are defined by twilight, and there is more than one accepted figure for how far the sun has to be below the horizon. Each of the conventions below is used by a large number of people, and an app usually ships with a default chosen from where it was written rather than from where you are.
| Convention | Broadly used in | What it changes |
|---|---|---|
| Muslim World League | Europe and much of the world | A middle position on fajr and isha |
| Islamic Society of North America | North America | Later fajr, earlier isha than most |
| Umm al-Qura | Saudi Arabia and the Gulf | Isha set a fixed interval after maghrib |
| Egyptian General Authority | Egypt and parts of Africa | Earlier fajr than the middle position |
| University of Karachi | South Asia | A symmetrical figure for both |
There is a second setting worth finding, usually called the asr method or the juristic method. One position takes asr to begin when an object's shadow equals its own length, the other when it reaches twice that. The gap between them can be well over an hour in summer. Apps expose this as a simple choice, and it should match what your community follows rather than whatever was preselected.
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What still works when the signal does not
Prayer times are calculated from your coordinates and the date, which means they do not need a connection at all once the app knows where you are. What does need a connection is the first location fix, any map or mosque finder, and streamed recitation. An app that refuses to show a timetable in aeroplane mode has chosen to work that way; it is not a limitation of the arithmetic.
- Let the app fix your location once, outdoors A single accurate fix is enough for a whole city. Most apps then let you lock the location so it stops asking.
- Check the times in aeroplane mode before you rely on it Turn the radios off and reopen the app. If the timetable is still there, it will work on a flight, in a basement and abroad.
- Download the recitation you listen to Streamed audio is the part that fails on a train. Most Quran apps let you download a reciter per surah or in full, and the full download is large.
- Download the translation as well as the Arabic These are separate downloads in many apps, and people discover the translation was streamed only when they are somewhere with no data.
- Turn off battery optimisation for the adhan app Otherwise the notification arrives late or not at all, which is the single most common complaint about every app in this category.
The apps worth having on the phone
The most widely installed of them, with prayer times, qibla, a Quran and a great deal else. It carries advertising and a subscription, so check the calculation method in the settings before trusting the first timetable it shows.
Prayer times with duas and azkar, and a clear settings screen where the calculation method and asr position are easy to find rather than buried.
A straightforward adhan app with a good selection of muezzin recordings and per-prayer notification control, which matters if you want fajr audible and the rest silent.
Prayer times, adhan and qibla in one small app. Popular across Southeast Asia and unfussy about what it asks for.
Clean and light, with a widget that shows the next prayer and the time remaining, which is the only part most people look at during the day.
Prayer times with qibla and a Hijri calendar, well rated and reasonable about notifications.
Times, qibla and learning material from a large organisation, and a good fit if you already follow their material elsewhere.
Azan, prayer times and qibla together, with a large user base and frequent updates.
Prayer times alongside a full azkar collection, for anyone who wants the morning and evening remembrances in the same place as the timetable.
A Quran with qibla and prayer times attached. Strong on recitation options and word by word reading, and one of the longest established apps here.
Word by word Arabic with translation and tafsir, all downloadable for offline use. The one to try first if study rather than recitation is the point.
English translation with audio and a clean reading view, aimed at people reading in English rather than in Arabic.
Enormously popular in Indonesia, with Indonesian translation. Worth knowing the interface language before installing it.
A plain Quran with multiple translations and reciters, and a simple offline mode.
Recitation as offline audio for listening rather than reading, which is the right tool for a commute.
Follows your recitation and marks where you went wrong, which is a genuinely different job from the rest of this list. Subscription based for the full feature set.
A qibla compass that shows the true north correction rather than hiding it, which makes it easier to tell when the reading is wrong.
The alternative, with a camera view that overlays the direction on the room. Useful in a hotel, and still only as good as the phone's magnetometer.
How far to trust the compass
A qibla feature does two things: it calculates the great circle bearing to Mecca from your coordinates, which is arithmetic and reliable, and it works out which way the phone is pointing, which is a magnetic sensor in a metal object surrounded by other metal objects. The second part is where the error comes from.
- Calibrate before reading it Most apps show a figure of eight motion. Do it away from the desk, not on it.
- Move away from metal and electronics A radiator, a laptop, a car dashboard, a steel framed table and a magnetic phone case will all pull the reading.
- Take the case off if it holds magnets Magnetic mounts and wallet cases are the commonest single cause of a compass that is confidently wrong.
- Check it against something known In a mosque, hold the phone facing the mihrab. If the app agrees, it is calibrated. If it does not, the phone is wrong, not the mihrab.
- Prefer a fixed reference where one exists Once you know the direction in a room you use daily, note it against a wall or a window. It does not change, and the phone can then stay in your pocket.
Pick the method your mosque uses, lock the location, download the recitation and the translation, and exempt the app from battery optimisation. After that it is a timetable, not a project.
Frequently asked questions
Which calculation method should I choose?
The one your local mosque uses. If you do not know, the regional convention listed above is a sound default, and the difference from a neighbouring method is usually a few minutes.
Why does the adhan notification arrive late?
Almost always battery optimisation. Exclude the app from it, allow exact alarms if the phone asks, and make sure the notification channel is not set to silent.
Do these apps work without a data connection?
The timetable and the qibla bearing do, once the app has your location. Streamed recitation, maps and mosque finders do not, so download what you listen to.
Is the qibla in an app accurate enough?
The calculated bearing is. The compass reading is the weak part, and it is affected by nearby metal and magnets. Calibrate, step away from the desk, and check against a known direction where you can.
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