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Topo GPS

rdzl makes innovative mobile navigation products. Topo GPS, an outdoor navigation app based on topographic maps, is its flagship product.

Partner solutions

Topo GPS is an intuitive outdoor GPS app based on the 1:25,000 OS Explorer map.

Topo GPS makes from your iPhone/iPad a complete GPS device. It can be used to import, record, plan, and share routes. The maps can be saved on your device so that Topo GPS can also be used offline.

Topo GPS makes it very easy for you to buy the maps you need. You can conveniently select the desired portions of the map from an overhead view. The price of the detailed OS Explorer map is only £0.99 for four sections of 4 by 4 km. For that you get lifetime access including future map updates. For larger sections discounts will be applied.

Ideal for walking, hiking, cycling, mountainbiking, sailing, horse-riding, geocaching, scouting, trail running and other outdoor activities. Also suited for outdoor professionals.

ContactHarmen Warringa
Product supportBackdrop maps
OS OpenData
Sector capabilitiesMobile Map Products & Services
Navigation systems & services
Tracking systems & services
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