Spatial software that keeps your data yours.

We make spatial software that leaves your data with you: on your phone, on your desktop, or on servers your own organisation runs. Tavak collects surveys offline on Android. Homestead opens them on the desktop, along with whatever else you already have. Open formats throughout, so nothing is locked in.

Get Tavak Download Homestead

How they fit

Two apps, one file between them

Tavak collects. Homestead gets the ground ready beforehand and reads the results afterwards. What passes between them is an ordinary file you can copy, and neither app needs the other to be worth having.

Tavak stands alone

Install it and start surveying. Nothing needs setting up on a desk first, and what you export is a GeoPackage with a QGIS project beside it, which any GIS will open.

Homestead stands alone too

It started life as Tavak's companion and turned into a viewer and toolbox worth having on its own. Open any vector or raster file, style it, cut a piece out of it, convert it. You never have to touch Tavak.

Keep it wherever you like

A survey leaves the phone as a single ZIP; a basemap goes back as a single MBTiles. Both are open formats that any GIS reads. Put the files on your own machines, or on servers your organisation runs. There is nothing to migrate out of later.

The apps

The right tool for where you are

One for the phone in your hand outdoors, one for the screen on your desk.

Field · Android

Tavak

Offline GPS surveying that ends in QGIS.

Record the track, draw points, lines and polygons into layers with your own forms, attach geotagged photos and videos, set geofences and destinations. Export a GeoPackage with the QGIS project already written. None of it needs a signal.

Android 7+ Works offline GeoPackage + QGIS

Product page & documentation →

$Homestead\'s map over Friesland: an OpenStreetMap extract as vector layers over the orthophoto, land use coloured by its class, the layer tree with its legend beside the map$

Desk · under heavy development

Homestead

A map for what came back, and for everything else.

Open a survey backup with its photos, videos and replay. Or ignore Tavak altogether and load Shapefiles, GeoJSON, GeoPackages, GeoTIFFs and tile services, from disk or over the internet. Style them, colour them by a field, cut pieces out, turn rasters into MBTiles. Save the whole desk as a project.

Linux / Windows / macOS Free GDAL inside

Product page →

Tavak, the field app

Survey where there is no signal

Offline GPS surveying for Android. Install it, walk out, and come home with a survey any GIS can open.

Offline first

Basemaps, GeoTIFFs and reference layers sit on the phone itself. Collect all day with no coverage, and export once you're back.

Photos and video

Geotagged photos and videos, either filed against the object they document through one of its form fields, or dropped on the map as a point in their own right.

Drawing

Points, lines and polygons, with length, area and perimeter updating as you go. Average the GPS for a corner that has to be right, and snap to what is already on the map.

Layers and forms

Every layer carries its own fields: text, numbers, choices, dates, ratings, photos and videos. Build the form once in the designer, or paste it in as CSV, then use it again on the next survey.

GNSS positioning

Satellite status across every constellation your phone can hear, signal strength, DOP figures, and an accuracy threshold you set yourself.

Straight into QGIS

A GeoPackage with a QGIS project beside it: the layers already styled, the photos in the map tips. Shapefile, GeoJSON, KML, GPX and Excel too, in whichever coordinate system you need.

Visit the Tavak page ↗ Documentation

Homestead, the desktop app

It began as Tavak's companion

Homestead was built to be the desk between the field and the office: prepare basemaps and reference layers before a survey, then go through what came back afterwards, photos and videos and all, and replay the day. Along the way it became a viewer and toolbox in its own right. Open any vector or raster file, style it, cut a piece out, convert it, and keep the whole desk as a project. It's free, GDAL travels inside it, and there is nothing to install first.

Open the backup

Drop in the ZIP the phone exported. Layers, tracks, photos, videos and forms come up on the map straight out of the GeoPackage inside it, and a timeline plays the day back.

Any vector data

Shapefile, GeoJSON, KML, GPX, CSV, GeoPackage, File Geodatabase, from disk or straight off a URL. Millions of features pan smoothly, read from the file's own spatial index. No server anywhere.

Style and colour

Outline, fill, and point symbols from five icon fonts. Colour by a field, either its unique values or ranges, using any of thirty palettes, and the legend appears under the layer.

Clip and export

Draw a shape and cut whatever is on the map down to it: MBTiles for the phone, a Cloud Optimized GeoTIFF, or the vector layers gathered into one GeoPackage. It puts every core you have to work.

Projects

Save the desk as a .hstd file: what is open, how each layer is drawn, where the map is looking. Double-click it to pick up where you left off.

Free, and on its own

GDAL, PROJ and GEOS ship inside the package, so there is nothing to install first. No account, no telemetry. Free for anybody, and it stays that way.

Linux AppImage Windows macOS Tauri 2 + Rust GDAL 3.10

Visit the Homestead page ↗ Documentation

Contact

Contact Spatialize

Questions about the company, pilot projects, pricing or a partnership go to hello@spatialize.dev.

Already using Tavak or Homestead? Write to support@spatialize.dev, or start from the support links on each product page.

General enquiries hello@spatialize.dev Pilot projects, pricing, partnerships, press

Tavak support centre spatialize.dev/tavak/support Guides, FAQ and troubleshooting

Video tutorials youtube.com/@SpatializeTavak Tavak and Homestead demonstrations