Mapio.

Mapio turns your phone into the GPS you take to the field. Open a georeferenced map — PDF or GeoTIFF — and you will see yourself standing on it, in real time, with no signal needed.

WHAT IT OPENS
Georeferenced PDFs (TerraGo GeoPDF and ISO 32000 PDFs with georeferencing), and TIF, TIFF and GeoTIFF: the drone orthomosaic, the agronomist's image, the survey map. Both work the same.

MEASURE
Distance and area by tapping the screen, area by walking the field with GPS, and center pivots by center, radius and fraction of the circle. In hectares, acres, meters or feet — your choice.

MARK
Points with a name, a note, photos and the colour you pick, on your own maps or on the online map. Folders and tags so nothing gets lost between seasons. Export as GPX and CSV.

ONLINE MAP
OpenStreetMap and high-resolution satellite imagery with your GPS, nothing to import. The "satellite with labels" layer puts town names and roads on top of the imagery, so you always know what you are looking at. Search a town, a hamlet or a ranch by name, or paste coordinates — a WhatsApp pin, a handheld GPS, a Google Maps link — and go there, which works even with no signal. And what you have already viewed stays on the phone, so out in the field with no data the map still draws instead of going blank, and a notice says so.

SAVED FIELDS AND PIVOTS
Save a field once and use it on every map you own. Import the ones you already have as KML, KMZ or shapefile, and export them to QGIS, Auravant or the planter monitor.

ROTATIONAL GRAZING
Split the field into equal strips, rotate the fence line and read the instant stocking rate in head per hectare and liveweight per hectare. Draw the laneway and mark the water point: every paddock with a way out to water, and how far the herd walks.

SATELLITE ZONING
Up to 5 years of Sentinel-2 imagery analyzed for your field, with the headland separated from the center and stability across seasons. Plus variable-rate prescriptions: several products per operation, the rate for each zone and the total to buy.

WHAT NEEDS A SIGNAL AND WHAT DOES NOT
Everyday use works offline: opening your maps, locating yourself, measuring, paddock planning, marking points, going to pasted coordinates and exporting. The online satellite map needs data the first time: what you already downloaded still shows with no data, up to 90 days. The place search by name needs data every time you search, and satellite zoning needs it to download the Copernicus/Sentinel-2 imagery: zone before heading out and review it later, already downloaded, which does work offline.

MAPIO PRO
The free version includes opening maps, locating yourself, measuring, marking points, saving fields and the online satellite map. Mapio Pro adds satellite zoning, variable-rate prescriptions, grazing paddock planning, import and export, and an ad-free map.

• Mapio Pro Monthly — 1 month — US$ 0.99
• Mapio Pro Yearly — 1 year — US$ 7.99

Auto-renewable subscription. Payment is charged to your App Store account at confirmation of purchase. It renews automatically unless you cancel at least 24 hours before the end of the current period; your account is charged within 24 hours prior to the renewal. You can manage or cancel it in your account settings after purchase.

PRIVACY
No accounts, no sign-up and no servers of ours. Your location is processed on the phone and never transmitted. The app's data is excluded from iCloud backup, so it is not uploaded to the cloud — the trade-off is that when you switch phones you have to import your maps again. The free version shows Google AdMob ads, and where the law requires it the app asks for your consent before the first one; you can change that answer in Settings.

Privacy policy: https://sites.google.com/view/mapio-privacy
Terms (Apple standard EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Sentinel-2 imagery from the Copernicus programme (EU/ESA). Street maps © OpenStreetMap contributors.