Local Scale Factor vs K
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Local Scale Factor
This tool calculates local scale factors and Cartesian coordinates from WGS84 GPS positions. It supports numerous local grid transformations and can convert between local postcodes and geodetic positions. It also offers map navigation to selected coordinates.
- Local scale factor calculation
- Cartesian coordinate conversion
- WGS84 GPS position input
- Local grid transformations
- Postcode to geodetic position conversion
- Map navigation
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For professional surveyors and geodesists who need to know the local scale factor and Cartesian coordinates based on WGS84 GPS positions Hundreds of local grid transformations built in. A full list of available transformations can be found at https://www.nrgsurveys.co.uk/wp-content/uploads/transformations.txt Converts latitude and longitude using local ellipsoid parameters and Helmert 7 step transformations As a bonus it converts local postcodes to geodetic positions and vice versa Open Maps navigation to the selected coordinates (If available)
K
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Sophisticated Data Collection Made Easy Improve the efficiency of your field based workforce, by reducing office time, increasing accuracy and completely eliminating paper and manual transcription. K-Mobile allows any mobile data collection task to be performed digitally. Whether it's a highly geographical focused task or pure paper replacement, K-Mobile will cut costs and improve efficiency. Features: - Collect and update data using the map or GPS - Full offline workflow supported - Design your own forms and responses using online portal, or use ready to go industry standard forms - Integration with a wide range of Bluetooth measurement devices - GIS agnostic, with exports and integration options to many leading backend GIS and databases - Fill out easy-to-use, response-driven forms - Attach photos and sketches to your features - OS streaming map service included - Collect points, lines, areas, and related data - Wide range of professional-grade GPS receivers supported - Track and report where you've been - Pure Collection or Asset Inspection workflows supported, with Turn-by-Turn and Stakeout style navigation supported
Screenshots
Verdict
Local Scale Factor and K are too close to call on the numbers: across 6 compared parameters โ price, update cadence, ads and in-app purchases among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.
| Parameter | Local Scale Factor | K |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | โ |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | โ |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.3 | 9.0 โ better |
| Further details โ not scored | ||
| Size | 65 MB | 111 MB |
| Age rating | 4+ | 4+ |
| Developer | NRG Surveys Ltd | K-MATIC |
In-app purchases
Local Scale Factor
No in-app purchases
K
No in-app purchases
Questions
Is Local Scale Factor free?
Is K free?
Do Local Scale Factor or K have ads?
Which is updated more often, Local Scale Factor or K?
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