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Maps · head to head

GRASS GIS vs OsmAnd

GRASS GIS logo

GRASS GIS

Maps

Long-running open source geospatial analysis engine for raster, vector and terrain processing

From
Free
Rated
-
Full reviewWebsite
OsmAnd logo

OsmAnd

Maps

Open-source map and navigation application based on OpenStreetMap data

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: GRASS GIS the location and mapset data model requires importing data into a structured database with a fixed coordinate system before analysis, which is a real barrier for anyone used to opening files directly.; OsmAnd free version limited to only 7 map downloads at once, restricting users who need multiple regional maps
  • They diverge on capability: GRASS GIS covers Raster analysis, OsmAnd covers Core Functionality.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which GRASS GIS and OsmAnd actually diverge.

Attributes where GRASS GIS and OsmAnd differ
AttributeGRASS GISOsmAnd
Pricing modelOpen source, no licence feeUnknown
PlatformsLinux, Windows, macOSiOS, Android, Desktop Editor, Huawei AppGallery
FoundedUnknown2010

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Maps).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in GRASS GIS

  • Raster analysis
  • Hydrological modelling
  • Terrain analysis
  • Vector topology
  • Temporal framework
  • Image processing
  • Python API
  • QGIS integration

Only in OsmAnd

  • Core Functionality
  • User Interface

What people use each for

The jobs each tool is most often brought in to do.

GRASS GIS

  • A hydrologist delineating watersheds and modelling flow accumulation over a large digital elevation modelnot OsmAnd
  • A research group building a reproducible time series analysis of satellite imagery that must be rerunnable years laternot OsmAnd
  • An environmental agency running viewshed and solar radiation analysis for planning assessments without buying commercial GIS seatsnot OsmAnd
  • A QGIS user who needs a specific processing algorithm that only exists in the GRASS toolboxnot OsmAnd

OsmAnd

  • Offline navigation in areas with no data connectionnot GRASS GIS
  • Turn-by-turn voice guided drivingnot GRASS GIS
  • Bicycle and pedestrian routingnot GRASS GIS
  • Hiking and trail running navigationnot GRASS GIS
  • Motorcycling and travel using per-country or per-region offline mapsnot GRASS GIS

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

GRASS GIS

  • The location and mapset data model requires importing data into a structured database with a fixed coordinate system before analysis, which is a real barrier for anyone used to opening files directly.
  • The native graphical interface is dated and inconsistent compared with QGIS or ArcGIS, so most users end up running GRASS through QGIS and never learn the tool they are actually depending on.
  • There is no vendor, so contractual support, service levels and liability do not exist by default and must be arranged with an independent consultancy that may not cover your jurisdiction.
  • Cartographic output and map layout are weak relative to the analysis capability, meaning a second tool is always needed to produce a publishable map.
  • Module naming and argument conventions are idiosyncratic and long-standing, so scripts are durable but the learning curve is steep and transferable skills from other GIS packages help less than expected.

OsmAnd

  • Free version limited to only 7 map downloads at once, restricting users who need multiple regional maps
  • Poor performance with slow map rendering and navigation lag reported on older devices
  • Route calculation limited to approximately 200 kilometers or less for offline calculation
  • Map accuracy issues due to reliance on community OpenStreetMap data which may contain outdated information

Pricing, plan by plan

GRASS GIS

Free
  • GRASS GISFree
    • GNU GPL licence
    • All modules included
    • No user or seat limits

OsmAnd

Free

No published plan breakdown. See the OsmAnd review.

Which should you pick?

Choose GRASS GIS if

  • You need raster analysis.
  • You want to start without paying.
  • You work on Linux, Windows, macOS.
  • You also want hydrological modelling.
GRASS GIS review

Choose OsmAnd if

  • You need core functionality.
  • You want to start without paying.
  • You work on iOS, Android, Desktop Editor, Huawei AppGallery.
  • You also want user interface.
OsmAnd review

Questions people ask

Is GRASS GIS or OsmAnd better?
Neither clearly leads. GRASS GIS starts at Free and OsmAnd at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GRASS GIS or OsmAnd?
GRASS GIS starts at Free and OsmAnd at Free.
Does GRASS GIS or OsmAnd run on more platforms?
GRASS GIS runs on Linux, Windows, macOS. OsmAnd runs on iOS, Android, Desktop Editor, Huawei AppGallery.
Can I use GRASS GIS for free?
Both have a free tier, so you can try either at no cost before committing.
What is GRASS GIS best used for?
GRASS GIS is most often used for a hydrologist delineating watersheds and modelling flow accumulation over a large digital elevation model, a research group building a reproducible time series analysis of satellite imagery that must be rerunnable years later, an environmental agency running viewshed and solar radiation analysis for planning assessments without buying commercial gis seats, a qgis user who needs a specific processing algorithm that only exists in the grass toolbox. Of those, a hydrologist delineating watersheds and modelling flow accumulation over a large digital elevation model and a research group building a reproducible time series analysis of satellite imagery that must be rerunnable years later are not what OsmAnd is typically brought in for.
What can GRASS GIS do that OsmAnd cannot?
GRASS GIS covers Raster analysis, Hydrological modelling, Terrain analysis, Vector topology. OsmAnd covers Core Functionality, User Interface.

Answered from the vendors’ own pages

GRASS GIS: Who maintains GRASS GIS?

An international volunteer and academic developer community under the Open Source Geospatial Foundation. It originated at the US Army Construction Engineering Research Laboratory in 1982.

OsmAnd: Does OsmAnd work offline?

Yes. OsmAnd works fully offline after downloading maps for specific regions. Route calculation, turn-by-turn navigation, and POI search all work without an internet connection.

Source
GRASS GIS: Can I buy commercial support?

Not from a vendor. Independent consultancies in the OSGeo ecosystem offer paid support and development, and availability varies by region.

OsmAnd: What is OsmAnd's pricing?

OsmAnd Free version is available with limitations including only 7 map downloads allowed at once and no 3D map views. OsmAnd Pro subscription costs 2.99 euros per month or 29.99 euros per year, offering 3D maps, hourly map refreshes, and cloud storage.

Source
GRASS GIS: Do I need to use its interface?

No. Most people run GRASS algorithms through the QGIS processing toolbox or from Python.

OsmAnd: What maps does OsmAnd use?

OsmAnd uses free OpenStreetMap data, which is updated monthly or hourly through OsmAnd Live. Wikipedia POI data is available for sightseeing, and users can add optional online tile map overlays.

Source
GRASS GIS: Is it suitable for production use?

Yes for analysis pipelines, and it is used by agencies and research institutions. Plan for community support rather than a service level agreement.

OsmAnd: Can I use OsmAnd on iOS and Android?

Yes. OsmAnd is available on both iOS via Apple App Store and Android via Google Play Store, with identical offline functionality on both platforms.

Source
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