GIS Lite vs GNSS Log App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GIS Lite
This app allows users to view and collect spatial data on their mobile devices. It supports various file formats, enables field data collection with photo attachments, and offers note-taking capabilities directly on maps. Offline access and extensive projection support make it ideal for field work.
- Load and view DXF, KML, Shapefiles, GeoTiff
- Collect field data with photo attachments
- Freehand/pencil notes over maps
- Export georeferenced TIFFs
- Offline data access
- Support for over 3000 projections
- Apple Pencil support for object selection
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GIS Lite. Use your iPad and iPhone to open DXF, KML, Shapefiles, GeoTiff, WorldFiles and more. Collect data on the field, attach photos and share pdf item reports. Take freehand / pencil notes over maps and export georeferenced tiff. Features that support property view available. New updates will gradually add features that will transform your device to a complete GIS station. GIS Lite is a professional mobile GIS solution that enables users to load and view heir own data over a background of map service imagery. Open of various vector data formats is supported. Below a list of current support types. ** For formats that use support files (eg dbf for shapefiles), files must be in the dedicated iCloud/GIS_Lite folder, so that access is provided to the application. Raster Files * #GeoTiff GIS Lite can open and render your GeoTiff files directly on the map. #WoldFiles** Open PNG, JPG or TIFF file using the corresponding world file (pgw,jpw,tfw). Just specify the projection used. Vector Files #DXF files .dxf Select your file to open from local or iCloud storage. You will need to select data projection. Layers and styles will be loaded. #KML / KMZ files .kml / .kmz #ESRI Shapefiles .shp Select .zip file that contains .shp, .dbf, .prj files Or Select your .shp file to open from local or iCloud storage. If you want a full load (.dbf attributes and .prj file), the files must be copied in iCloud application folder (GIS_Lite). If not, you can still view your data. In that case, only geometry will be loaded and you will have to define projection. Rendering of geometry primitives is currently available (points / lines / polygons) Parsing engine is continuously updated so stay updated for more features. Create datasets by collecting data on the field. Capture on field photos and attach to polygon / line / point record. Version 1.6 introduces Apple Pencil usage for enhanced object selection. Your spatial data is stored on the iPhone, so there’s no need for an Internet connection to see your data – great for field work. We also support over 3000 projections, so no need for re-projection. Change Basemap among apple map / satellite / hybrid and more. This application is optimised to provide • High parse and render speed • Zoom to extend • Zoom to selection • Select objects on map • Display attributes • Highlight selection items • Extensive projection list • GPS position • Export and share selected objects Some basic GIS background is assumed to be able to use the application (projections, layers, etc) *Images loaded are currently restricted to 2 MegaPixel size for performance reasons.
GNSS Log App
This app provides a digital solution for surveyors and geodesists to document static GNSS observations. It offers comprehensive equipment management, direct integration with geodetic databases, and tools for field data collection, all while ensuring professional, publication-ready PDF output.
- Digital static GNSS observation logging
- Comprehensive equipment library management
- Direct NGS database integration
- OPUS solution import and integration
- Field tools: timers, weather, photos, visibility diagrams
- Publication-ready PDF export
- Privacy-focused, no account required
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GNSS Obs - Professional Observation Logs GNSS Obs is the professional solution for documenting static GNSS observations. Designed for surveyors, geodesists, and geospatial professionals, it eliminates transcription errors and ensures consistent, accurate project documentation. Replace Paper Logs with Digital Precision Stop relying on paper forms, fillable PDFs, and handwritten notes. GNSS Obs provides a structured workflow that promotes accuracy and completeness while maintaining the professional standards required for geodetic control projects. Comprehensive Equipment Management Build and maintain your equipment library with support for: • Fixed height, collapsible and adjustable tripods • Antenna extensions • Integrated antenna/receiver configurations • Complete metadata for NGS compliance Import and export library items to share standardized configurations across your organization. Direct NGS Database Integration Access public monument data directly from: • National Geodetic Survey Integrated Database (IDB) • OPUS Share Database • NOAA CO-OPS Stations Monuments can also be entered manually when working with local control networks. OPUS Solution Integration Import OPUS solution emails to automatically populate: • Observed positions • Actual observation times • Session statistics • Solution quality metrics Include the complete OPUS solution in your PDF output for comprehensive project records. Essential Field Tools • Session timers with local notifications • Automatic weather recording at session start and end • Photo documentation with NGS-compliant naming • Satellite visibility diagrams using device motion sensors • Real-time editing before, during, and after observations Professional Documentation Export publication-ready PDF observation logs featuring: • Your company logo and branding • Complete equipment configurations • Weather conditions • Site photographs • Visibility diagrams • OPUS solutions Share via Files, email, AirDrop, or messaging. Note: This app documents observations and does not communicate with GNSS receivers. It is designed as a field companion for recording session metadata and producing professional deliverables. Privacy First All data remains on your device. No account required. Full control over exports and backups. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: GNSS Log App at 100% against GIS Lite's 50%. GNSS Log App also leads on rating (4.9 vs 1.0) and ratings volume (16 vs 1). GIS Lite's advantage is update cadence (every 6 days vs every 2 months) and iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GNSS Log App holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: GNSS Log App has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of GIS Lite's written reviews are positive against 100% of GNSS Log App's.
GIS Lite ships an update every 6 days, GNSS Log App every 2 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | GIS Lite | GNSS Log App |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 4.9 (16 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 16 — better |
| Update frequency | Every 6 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 30 MB | 204 MB |
| Age rating | 4+ | 4+ |
| Developer | Ioannis Sofos | John May |
Customer experience
GIS Lite
GNSS Log App
In-app purchases
GIS Lite
No in-app purchases
GNSS Log App
No in-app purchases








