Set up prayer reminders and fix alarms that don't ring

To get a reminder for a prayer, open the mosque you pray at, tap Alarms, choose whether to be reminded at the Adhan or the Iqaamah, and switch on the prayers you want. Reminders are scheduled on your phone, so they work offline and survive a restart. If one arrives late or not at all, the cause is almost always a phone setting: exact alarms, notifications, battery optimisation or Do Not Disturb.

Set a reminder

1. Open a mosque from Find, Browse, Pray Now or Saved.
2. Tap Alarms under the mosque's photo, or the alarm-clock icon at the top of the screen.
3. If Android asks whether Salah Locator may send notifications, tap Allow.
4. Under Remind me at, choose Adhan or Iqaamah.
5. Switch on each prayer you want to be reminded of.

When the time comes, you get a notification such as Fajr • Badshahi Mosque with It's time — congregation at 4:35 AM. Tapping it opens the app.

A few rules worth knowing:

• One mosque per prayer. Each of the five prayers can be tied to one mosque at a time. If Dhuhr is already set at another mosque, the row says Currently at and that mosque's name; switching it on here moves it.
• Published times only. Reminders follow a mosque's own timetable, including a Ramadan or seasonal timetable while it is in force. If the mosque hasn't published a time for a prayer, that row shows Not set and its switch can't be turned on.
• Jumuʼah. There is no separate Jumuʼah reminder. On Fridays the Dhuhr reminder follows the Dhuhr time, so check the Jumuʼah row on the mosque's page.

See or remove all your reminders

Open Profile → Prayer alarms (or tap Manage all on any mosque's alarm screen). My prayer alarms lists every prayer you have set and the mosque it follows. Tap the crossed-out alarm icon to remove one.

When a mosque changes its times

Each time you open the app, and about every six hours in the background while you are online, the app re-checks each mosque you have a reminder for. If the mosque has changed a time, your reminder moves to the new time and a Timing updates notification tells you, for example Fajr time updated. When the phone restarts or the app updates, all reminders are set again automatically from the times saved on the phone.

Reminders that don't ring, or ring late

Work through these in order.

1. Allow exact alarms. If the alarm screen shows Allow exact alarms, tap Open settings and switch on the permission (Android calls it Alarms & reminders). Without it, Android may hold the reminder back by several minutes to save battery.
2. Check notifications. Open Android Settings → Apps → Salah Locator → Notifications. Make sure notifications are on and the Prayer alarms category isn't blocked or silenced.
3. Lift battery limits. In Settings → Apps → Salah Locator → Battery (sometimes App battery usage), choose Unrestricted. Some manufacturers add their own sleeping-app or auto-start lists in the battery settings; exclude Salah Locator from them too. Names vary by phone brand.
4. Check Do Not Disturb. If you use Do Not Disturb or a bedtime mode at Fajr, add Salah Locator to the apps allowed to interrupt, or the reminder will arrive silently.
5. Don't force-stop the app. Force stop in Android settings cancels every scheduled alarm until you open the app again. If you have used it, just open Salah Locator once.
6. Check the timetable. Make sure the prayer shows a time on the alarm screen and that Remind me at is set to the one you expect: an Adhan reminder can be 15 or more minutes earlier than an Iqaamah reminder.

For a wider look at why Android delays alarms, read Prayer alarm not going off on Android?. To choose the right mosque first, see Read a mosque's timetable, and for trips without signal, what works offline.