GPS OS Grid Reference vs GridFinder

GPS OS provides a fast and accurate way to locate your position on an Ordnance Survey map, both in Great Britain and Ireland. • No phone signal required - works in the most remote locations. • OSTN15 transform data for high conversion accuracy (better than 1m). • 6, 8 and 10 figure grid references. • A large, clear, high contrast display ensures you can easily read your position in any light conditions. • Optimises the frequency of position updates depending on battery charge and speed of travel to make sure you can always make calls at the end of the day. • Create waypoints from a map, your current location or manually enter Ordnance Survey coordinates. • Explore waypoints and get directions in Apple Maps. • Share waypoints with other apps or users. • No adverts. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Includes OSTN15 transform data licensed with permission. Copyright and database rights Ordnance Survey Limited 2016, ©Crown copyright and database rights Land and Property Services 2016 and/or ©Ordnance Survey Ireland, 2016. All rights reserved.

GridFinder shows you exactly where you've already searched. As you move, GridFinder paints a mesh grid over the map, filling in every cell you pass through. At a glance you can see which areas you've covered — and which you still haven't — so you never search the same spot twice or miss a corner. Perfect for any task where covering ground thoroughly matters: • Searching for a lost item, key, or dropped belonging • Looking for a lost pet • Foraging, beachcombing, or mushroom hunting • Ground search, field surveys, and patrols KEY FEATURES Visual coverage grid Your path is recorded cell by cell on the map. Covered ground is filled in, so gaps are obvious. Adjustable resolution Choose 5m, 10m, or 20m cells depending on how finely you want to record. Auto-stop timer Set a time to stop automatically so tracking never runs longer than you need. Search history Every session is saved. Reopen past searches and overlay them on the map to compare where you've been. Search together (optional) Share an 8-character code with friends or teammates and cover a large area as a group. Everyone sees each other's explored cells in real time, so no one overlaps. Your cells appear in a darker color, teammates' in a lighter shade. GridFinder works entirely around your location on the map — simple, focused, and built to make sure no ground goes unchecked. Note: The real-time group sharing feature uses tickets, available as an in-app purchase. Solo searching and history are always free.