How to get woken up before your train stop
Quick answer
Open the DO101 Station Alarm in your phone's browser, search for your destination station and press start. As you come within the radius you chose — 800 m suits a city train, 2–3 km a fast intercity — the phone rings, flashes a full-screen alert and, on Android, vibrates. It uses GPS, so it keeps working in tunnels. Keep the page open with the screen on.
Open the Train Station Alarm — freeStep by step
- 1Open the Station Alarm on your phone and allow location access.
- 2Search for your destination and pick it.
- 3Choose a radius and press start.
- 4Leave the page open and the screen on, with the volume up.
Why a timer alarm does not work on trains
Trains run late, sit outside stations and get held at signals. A 40-minute alarm either wakes you at the wrong stop or too late. A distance alarm goes off when you are actually close, however long the journey takes.
The one thing to know
Browsers pause pages that are in the background, so the phone must stay on this page with the screen on — no locking the phone or switching apps. The tool asks the browser to keep the screen awake and tells you if it refuses. Plug in if the journey is long.
On an iPhone, Safari does not let web pages use the vibration motor, so the alarm uses sound and the full-screen alert instead. Turn the volume up, or use earphones.
Choosing the radius
GPS is accurate to 5–20 m in the open and much worse between tall buildings or underground. The tool shows the accuracy it is getting and warns when it is worse than 100 m. On a fast train, a bigger radius gives you about a minute to wake up and gather your things.
Frequently asked questions
Does it need mobile data?
Only to search for the station. Once started, it runs on GPS alone — the map may not load in a tunnel, but the countdown and alarm keep going.
Is my location sent anywhere?
No. Your position is read by the page and never leaves the phone.
Does it work on buses?
Yes. Pick the stop's location and a smaller radius.
The tool for the job
Sleep on the train and get woken before your stop.