Comparison

GB Grid Converter vs Grid Ref UTM

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

Head to head
About

GB Grid Converter

This app converts British National Grid References to Latitude/Longitude coordinates and vice-versa. It supports both OSGB36 and WGS84 datums. You can view converted coordinates in Maps, send them to other apps, or copy them to your clipboard.

Highlights
  • Convert British National Grid to Lat/Long
  • Convert Lat/Long to British National Grid
  • Supports OSGB36 and WGS84
  • View coordinates in Maps app
  • Send coordinates to other apps
  • Copy coordinates to clipboard
  • Fuzzy parsing for input
Features
Read full description

Easily convert between British National Grid References (OS Grid Refs) and Latitude, Longitude coordinates (both OSGB36 and WGS84 are supplied). Then, easily view the converted coordinate in the Maps app, or send it to GPS Log (our app for recording your travels). Or copy to the clipboard using the standard iPhone functions. Fuzzy parsing logic allows you to input coordinates in a variety of ways, like "TQ 30267 76930", and "TQ302769". If you have any problems using this software, please contact us by email: support-at-gpslog.com so we can work with you to solve the problem. Issues left as reviews are difficult to address.

About

Grid Ref UTM

Pinpoint your exact map reference location globally using the Universal Transverse Mercator (UTM) system. Displays UTM grid references, hemisphere, and WGS84 latitude/longitude. Share your location via Twitter. Ideal for outdoor enthusiasts.

Highlights
  • UTM Grid Reference display
  • WGS84 Latitude and Longitude
  • Hemisphere information
  • Location sharing via Twitter
  • Accuracy of readings indicator
  • International operation with USA UTM Zones guide
Features
Read full description

Pinpoint your current map reference location anywhere in the world, using the Universal Transverse Mercator geographic coordinate system. (UTM) App Provides: UTM Grid Ref, Hemisphere, and WGS84 Latitude and Longitude values. The Accuracy of Readings, as indicated by your device, will also be shown. Tweet to Share your Location via Twitter! Grid Ref UTM - Your Grid Reference App! App will operate internationally. App includes a graphical guide to the United States (USA) UTM Zones. Ideally suited for use by walkers, hikers and outdoor sports enthusiasts. It is recommended that you should always carry a map and physical compass when on outdoor pursuits. For best results, use in a flat position, not an upright position. Much like a traditional compass. Use in an open space, where possible, away from trees, buildings and sources of interference. For continued on-screen display of Grid Reference information, please set your Auto-Lock preference in the 'Settings' App. (Settings -> General -> Auto-Lock) Compatible with handsets that feature GPS hardware. You may have to grant the app permission to use this information. -- Ad Supported.

Screenshots

GB Grid Converter2 screens
Grid Ref UTM3 screens

Verdict

The call

The clearest difference is rating: GB Grid Converter at 5.0 against Grid Ref UTM's 4.6. GB Grid Converter also leads on update cadence (every 2 months vs every 10 months). Grid Ref UTM's advantage is ratings volume (183 vs 1) and iOS requirement (11.0 vs 16.6). On price, review sentiment, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. GB Grid Converter sells 1 one-off in-app purchase and Grid Ref UTM sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

GB Grid Converter holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Grid Ref UTM has 183 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 76% of GB Grid Converter's written reviews are positive against 74% of Grid Ref UTM's.

UpkeepUpdate frequency

GB Grid Converter ships an update every 2 months, Grid Ref UTM every 10 months. The most recent releases landed on September 29, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
GB Grid Converter versus Grid Ref UTM: the parameters behind the verdict, then further details
ParameterGB Grid ConverterGrid Ref UTM
PriceFreeFree
Rating5.0 (1 ratings) — better4.6 (183 ratings)
Positive reviews75.9% of reviews — better73.7% of reviews
Number of ratings1183 — better
Update frequencyEvery 2 months — betterEvery 10 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.611.0 — better
Further details — not scored
Size10 MB5 MB
Age rating4+4+
DeveloperGeospike Pty LtdMike Irving

Customer experience

GB Grid Converter

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews54 reviews
Positive75.9%
Neutral7.4%
Negative16.7%

Grid Ref UTM

All ratings183 ratings
Positive90.2%
Neutral2.2%
Negative7.7%
Written reviews19 reviews
Positive73.7%
Neutral0.0%
Negative26.3%

In-app purchases

1 purchases

GB Grid Converter

One-time1
  • GB Grid Converter Premium$10.00
1 purchases

Grid Ref UTM

One-time1
  • Go Ad Free$0.99

Questions

Is GB Grid Converter free?
GB Grid Converter is free to download, with in-app purchases available.
Is Grid Ref UTM free?
Grid Ref UTM is free to download, with in-app purchases available.
Which has better reviews, GB Grid Converter or Grid Ref UTM?
GB Grid Converter is rated higher. GB Grid Converter averages 5.0 out of 5 from 1 ratings, while Grid Ref UTM averages 4.6 from 183 ratings.
Do GB Grid Converter or Grid Ref UTM have ads?
Neither GB Grid Converter nor Grid Ref UTM shows ads.
Which is updated more often, GB Grid Converter or Grid Ref UTM?
GB Grid Converter ships an update every 2 months, and Grid Ref UTM every 10 months. Most recently, GB Grid Converter was updated on September 29, 2026 and Grid Ref UTM on October 7, 2026.

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