Question 1

What is a location-based alarm app?

Accepted Answer

A location-based alarm app wakes you when your phone reaches a specific GPS coordinate — perfect for commuters sleeping on trains, buses, or subways who don't want to miss their stop.

Question 2

Does Nap Alarm work underground in the subway?

Accepted Answer

Yes. Nap Alarm's Subway Watchdog mode detects GPS signal loss and switches to predictive tracking using your saved route, so it keeps working even in deep metro tunnels without any signal.

Question 3

Is Nap Alarm free to download?

Accepted Answer

Yes, Nap Alarm is completely free on Android. A premium Z-Coin system unlocks extra features, but the core GPS location alarm is always free.

Question 4

Which countries is Nap Alarm available in?

Accepted Answer

Nap Alarm is available in 50+ countries on the Google Play Store for Android devices.

Question 5

How does the GPS alarm for bus and train work?

Accepted Answer

You search for your destination stop, set a proximity buffer (e.g. 500m away), lock your phone and sleep. Nap Alarm tracks your GPS position in the background and sounds an alarm when you enter the radius — no internet connection required.

Question 6

What is Trip Buddy and how does it detect an emergency?

Accepted Answer

Trip Buddy is a safety net for solo commuters. If your alarm goes off at your destination and you don't stop it (meaning you might be unresponsive), the app executes a Silent SOS Strike. It streams your live GPS to your paired Buddy, playing a loud siren on their phone (even on Do Not Disturb) and flashing a red Rescue screen with your location on a map.

Everything you need to know

General

How It Works

Subway & Underground

Safety & Features