Comparison

Local Scale Factor vs K

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

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.

Highlights
  • Local scale factor calculation
  • Cartesian coordinate conversion
  • WGS84 GPS position input
  • Local grid transformations
  • Postcode to geodetic position conversion
  • Map navigation
Features
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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)

About

K

Features
Read full description

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

Local Scale Factor4 screens
K2 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

ScorecardNo meaningful differences
Local Scale Factor versus K: the parameters behind the verdict, then further details
ParameterLocal Scale FactorK
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeโ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.39.0 โ€” better
Further details โ€” not scored
Size65 MB111 MB
Age rating4+4+
DeveloperNRG Surveys LtdK-MATIC

In-app purchases

None

Local Scale Factor

No in-app purchases

None

K

No in-app purchases

Questions

Is Local Scale Factor free?
Local Scale Factor is free to download, with no in-app purchases.
Is K free?
K is free to download, with no in-app purchases.
Do Local Scale Factor or K have ads?
Neither Local Scale Factor nor K shows ads.
Which is updated more often, Local Scale Factor or K?
Local Scale Factor ships an update every 2 months, and K every 2 months. Most recently, Local Scale Factor was updated on October 10, 2026 and K on September 30, 2026.

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