Karttaselain

Karttaselain is a map and GPS tool for Android that delivers Finland's official topographic maps, aerial photos, urban street maps and marine charts in one offline-capable app. Designed for hikers, boaters and property professionals, Karttaselain combines up-to-date National Land Survey mapping with GPS tracking, route saving, GPX import/export and a map feedback feature so users can suggest corrections. The app offers extensive free content plus an optional Plus subscription for deeper depth data, continuously updated property records, offline downloads and synchronized routes across devices, making it useful both for outdoor navigation and planning.

Key Features

⭐ Accurate, up-to-date topographic maps and aerial images covering all of Finland from the national mapping authority.

⭐ Urban and town maps with street names and numbers, plus an excellent Norwegian topographic map for cross-border hiking.

⭐ Marine charts with a basic free depth chart; more comprehensive depth contours and readings available with a Plus subscription.

⭐ Property map showing boundaries and codes in the free version, with continuously updated property records in Plus.

⭐ GPS functions including precise location, tracking, speed display, compass and directional guidance (hardware permitting), plus GPX import/export.

⭐ Map feedback tool that lets users suggest edits to improve map quality and contribute to the community dataset.

Advantages

✅ Extensive free map content makes the app useful immediately without a subscription for many outdoor activities.

✅ Offline downloads and synchronized waypoints/routes with a Plus subscription help when travelling or planning from multiple devices.

✅ Powerful GPS and route tools support tracking, route planning and export for use with other navigation devices.

✅ Karttaselain includes a 14-day free trial for Plus features and offers in-app subscriptions (options shown in the app) to unlock advanced marine and property data.

Disadvantages

❎ Some advanced features—detailed depth charts, continuous property updates, hillshade and orthophotos—require a paid Plus subscription.

❎ Certain functions such as compass-based rotation and direction require device hardware (digital compass or GPS receiver) to work fully.

❎ The free depth and property layers are periodically updated but lack the continuous detail provided to Plus subscribers.

Development Team

The app is developed collaboratively with its user community and supported by a customer service team; users are encouraged to join community channels and leave feedback or reviews to influence future improvements.

Version Information

Recent updates added slope shading (hillshade) and forest orthophotos to the map selection; these datasets are available to Plus subscribers or during the trial—update the app to the latest version to access them.