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SW Maps

Free Android GIS data collector that pairs with external RTK GNSS receivers

As of 1 September 2026, SW Maps is free to use. A genuinely free mobile GIS app from a Nepali engineering consultancy that connects to Bluetooth and USB RTK receivers, which is the feature commercial field apps charge a subscription for. Softwr lists it under Maps. SW Maps is made by Softwel (P) Ltd, available on Android.

Overview

What SW Maps does

SW Maps is an Android application for collecting, displaying and sharing geographic data in the field. Users define point, line and polygon layers with custom attributes including text, numbers, dropdowns, checklists, photos, audio and video, then collect against them offline. It loads basemaps, unlimited geospatial PDF layers and standard vector data, and exports to KMZ, shapefile, GeoJSON, GeoPackage, spreadsheets and CSV. The fact that matters commercially is the GNSS support. SW Maps connects to external RTK GNSS receivers over Bluetooth or USB serial, reads NMEA, applies antenna height and records fix quality per point. That means a survey-grade receiver plus a cheap Android tablet plus a free app produces centimetre-level attributed field data. Commercial equivalents from Esri, Trimble or Juniper charge annual per-user subscriptions for the same capability, and for a team of ten field staff that difference is thousands of pounds a year. It is developed by Softwel, a Kathmandu engineering consultancy, originally for its own water supply and infrastructure projects, and is distributed free with no advertising. The trade-off is what free from a small consultancy means: Android only, no iOS, no managed cloud back end, no contractual support and no roadmap commitment. Organisations that need auditability, user management and a support agreement should treat SW Maps as a capable field tool inside a workflow they manage themselves, not as a platform.

What people use it for

  • An NGO or municipal utility mapping water points, pipe networks or road assets on a budget that cannot absorb per-user GIS subscriptions
  • A survey team pairing a low-cost RTK receiver with Android tablets to collect centimetre-accurate attributed features without buying field software seats
  • A university field course teaching GNSS data collection where every student needs the tool on their own device
  • A consultant doing a one-off asset inventory who needs shapefile or GeoPackage output and does not want to start an annual subscription for a three-week job

The honest half

Where it falls short

Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about SW Maps.

  • Android only. There is no iOS version and no sign of one, which rules it out for organisations that issue iPhones and iPads to field staff.
  • There is no back end: no user management, no central project sync, no audit trail. Data lives on the device until someone exports it, and a lost tablet is lost data.
  • No commercial support contract exists, so an organisation with a compliance requirement for vendor support cannot use it for regulated work regardless of technical fit.
  • It is maintained by a small consultancy as a side product of its own project work, so the roadmap follows Softwel’s needs and a feature you depend on may never be prioritised.
  • Form logic is basic compared with dedicated survey platforms: no meaningful skip logic, validation or multi-user assignment, so complex questionnaires quickly outgrow it.

Cross-shopped

What people choose instead of SW Maps

Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.

  • SW Maps logo
    SW Maps
    vs
    Fulcrum logo
    Fulcrum

    Fulcrum: If you need a managed cloud back end, user management and a support agreement

  • SW Maps logo
    SW Maps
    vs
    Q
    QGIS

    QGIS: The desktop counterpart for processing what SW Maps collects

  • SW Maps logo
    SW Maps
    vs
    Esri ArcGIS logo
    Esri ArcGIS

    Esri ArcGIS: If field data must land directly in a corporate ArcGIS estate with governance

Pricing

What SW Maps costs

Taken from the vendor's own pricing page. Prices move, so check before you buy.

SW Maps

Free

  • All features included
  • External RTK GNSS support
  • Unlimited layers and exports
  • No advertising
  • No paid tier and no vendor support agreement

Capabilities

Features

  • Custom feature layers

    Define point, line and polygon layers with typed attributes including photos, audio and video

  • External GNSS support

    Connect Bluetooth or USB serial RTK receivers and record fix quality and antenna height

  • Offline basemaps

    Cache online basemaps and load MBTiles for areas without coverage

  • Geospatial PDF layers

    Load an unlimited number of georeferenced PDF drawings as field reference

  • Vector import

    Bring in shapefiles, GeoJSON, KML and GeoPackage as reference or editable layers

  • Photo and media capture

    Attach geotagged media directly to collected features

  • Export formats

    Share as KMZ, shapefile, GeoJSON, GeoPackage, XLS, ODS or CSV

  • NTRIP client

    Receive RTK corrections from a caster for centimetre positioning

  • Tracking and navigation

    Record tracks and navigate to stored points in the field

Answered, with sources

Questions people ask

Each answer names the page it came from, so you can check it rather than take our word for it.

Is SW Maps really free?

Yes. It is free with no advertising and no paid tier. There is no subscription and no feature paywall.

Does it support RTK receivers?

Yes, over Bluetooth or USB serial, with NTRIP correction support, antenna height and per-point fix quality recording.

Is there an iOS version?

No. Android only.

Who maintains it?

Softwel, an engineering consultancy in Kathmandu, Nepal, which built it for its own infrastructure projects.

Can we get support?

Not contractually. There is no commercial support agreement, which is the main reason organisations with compliance obligations choose a paid alternative.

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Softwr does not host reviews and shows no star rating for SW Maps, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.

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