TrueSize Mobile App for iPhone and Android

The TrueSize app puts the true-size map in your pocket. It is free on iOS and Android, shares the same data as the website, and lets you drag any country over another to compare real sizes.

As of October 2026, the app is rated 4.7 from 283 ratings on the App Store (US) and about 4.4 from more than 900 ratings on Google Play.

What the app can do

• Search more than 760,000 regions, from countries to towns, and drag them anywhere on the map with true size kept.
• Open the historical timeline and see borders in any year. See Historical Borders Map.
• Show nuclear blast radius rings. See Nuclear Blast Radius Map.
• Count the people inside a circle or a shape you draw. See Population Radius Tool.
• Measure distance and bearing, and draw custom shapes.
• Use map types, skins, terrain relief and seafloor depth.
• Show a Grid of parallels and meridians, turn true size off and on with Size, and switch North behavior.
• Play the TrueSize Challenge and the Flag Quiz.
• Share your map, and import GeoJSON or TopoJSON data.

The map in the iPhone app.

Web versus app

The app follows the website closely, but a few features exist only on one side.

Feature	Web	App
Move and compare regions at true size	Yes	Yes
Historical timeline	Yes	Yes
Search	Yes	Yes
Nuclear blast radius	Yes	Yes
Population, distance and bearing tools	Yes	Yes
Draw custom shapes	Yes	Yes
Skins, terrain and seafloor	Yes	Yes
Challenge and Flag Quiz	Yes	Yes
3D globe and its effects	Yes	No
Countries on other planets	Yes	No
Living Earth live weather	Yes	No
Map posters	Yes	No
Find by flag	Yes	No
Radio	Yes	No
Compare two regions and custom challenge links	Yes	No
Keyboard shortcuts	Yes	No
Import of KML, GPX and Shapefile	Yes	No
Export as TopoJSON, KML and Shapefile	Yes	No (GeoJSON only)
One-time purchase to remove ads	No	Yes

The web version also works in a phone browser, so features that are missing from the app are still available at truesize.net.

How the app differs in use

• The ribbon sits at the bottom of the screen, and tools open as sheets.
• You use touch gestures instead of keyboard shortcuts.
• Help, About and the tutorial are in the menu at the top left.
• Ads are shown through Google AdMob, and a one-time purchase removes them.

Related

• Selecting Countries and Regions
• Sharing and Exporting
• Keyboard Shortcuts
• Suggest Flags, Names and Borders

---

Next: Open the map