See where the Proastiakos actually is

What it looks like

How it works

While the app is open, your phone reads its own location and works out — on the device itself — whether you are on the railway. If you are, it sends one number: how far along the line you have got.

Everyone else sees that distance drawn back onto a map as a moving train. One rider reporting shows as approximate; two riders reporting independently confirm the same train, which is what makes a crowd-sourced position trustworthy instead of a guess.

What you get

• Live train positions on the Piraeus – Airport line, on a real map and as a line view.
• A departure board that picks your nearest station by itself — weekend and holiday timetable so far.
• Delay estimates measured against the published timetable, whenever a timetabled train can be matched.
• Rider reports — how late, accident, power cut — because a train held for an accident is not late yet, and no sensor can infer why it stopped.
• A QR code to hand the app to whoever is waiting next to you. Every new rider makes the map better.

Privacy, plainly

• Your coordinates never leave the phone. Location becomes a distance along the railway on the device, and only that number is sent.
• Off the line, nothing is sent at all — not at home, not at work, not anywhere.
• No account, no name, no advertising ID. A random id is made for each journey and thrown away at the end, so journeys cannot be linked to each other or to you.
• Everything sent deletes itself automatically.

Read the full privacy notice — it is written to be read, not to be survived.

Honest limits

• Positions come from riders. When nobody with the app is aboard, the line is quiet. It gets better with every rider.
• The app reports while it is open on screen.
• The weekday timetable is not transcribed yet, so weekday delays are not estimated.
• One rider on a train shows as approximate until a second rider agrees.