Comparison

GNSS View vs Tomstrails GPS UTM

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

Head to head
About

GNSS View

Visualize the positions of satellite navigation systems like QZSS and GPS in the sky. View satellite arrangements on a radar or through augmented reality from your current location. Supports multiple satellite constellations and customizable display options.

Highlights
  • Position Radar view of satellites
  • Augmented Reality (AR) display
  • Supports QZSS, GPS, GLONASS, BeiDou, Galileo, SBAS
  • Select specific signal satellites
  • Set elevation mask angle
  • Display HDOP and VDOP values
Read full description

This application enables you to see where the Quasi-Zenith Satellite System in the sky! ●What is QZSS? Quasi-Zenith Satellite System (QZSS) is a Japanese satellite positioning system composed mainly of satellites in quasi-zenith orbits (QZO). Satellite positioning systems use satellite signals to calculate position information. One famous example is the American Global Positioning System (GPS) and the QZSS is sometimes called the Japanese GPS. For details, please refer to the following Website "Quasi-Zenith Satellite System". URL : https://qzss.go.jp/en ●What is GNSS View? GNSS View provides that iOS version application that is based on the website application "GNSS View". This application enables you to know position of positioning satellites such as QZSS and GPS in the specified time and location. The positioning satellites displayed in the GNSS View are not based on the satellite information directly received by the smartphone but are displayed based on the satellite arrangement calculated based on the publicly released orbit information. ●GNSS View 3 functions 【Main】 ・You can move to the Position Radar screen or AR Display screen from the application startup screen. ・You can see the operating manual and privacy policy of this application via the website. 【Position Radar】 ・It is provided radar view of positioning satellites such as QZSS and GPS as a sky plot at the specified time and location. ・Positioning satellites can be specified from QZSS, GPS, GLONASS, BeiDou, Galileo, SBAS. ・You can also select specified signal satellites to see on the radar. ・You can see selected satellites by setting elevation mask angle. ・You can switch east and west of satellite arrangement, turn on / off rotation, and switch on / off display of satellite number. ・It displays HDOP, VDOP, the total number of satellites and the number of each positioning satellites in the satellite arrangement displayed on the radar. 【AR Display】 ・Position of positioning satellites such as QZSS and GPS on the sky from your current location is able to see through your camera at the specified time. ・In order to display satellites, it is necessary to turn on the position information of the smartphone and complete the positioning. Therefore, it may take time to display. ・Positioning satellites can be specified from QZSS, GPS, GLONASS, BeiDou, Galileo, SBAS. ・You can also select specified signal satellites to see on the radar. ・You can see selected satellites by setting elevation mask angle. ●Supported versions ・iOS 26 ・iOS 18 ・iOS 17 ・iOS 16 ・iOS 15 ・iOS 14

About

Tomstrails GPS UTM

This app provides precise UTM grid references and displays your location on topographic maps. It works offline, supports various regional datums, and offers multiple coordinate formats for easy sharing and use in other applications.

Highlights
  • Fast and accurate UTM grid reference
  • Locate position on topographic maps
  • Works without phone signal
  • Supports regional datums (e.g., ED50)
  • Multiple coordinate formats (1m, 10m, 100m)
  • Share coordinates with other apps
  • High contrast display for readability
Read full description

GPS UTM displays a fast and accurate UTM grid reference. Locate your position on topographic maps. GPS UTM supports many of the regional datums used around the world including ED50. ∙ No phone signal required - works in the most remote locations. ∙ 1 metre, 10 metre and 100 metre formats. ∙ Paste your coordinate into other apps or share with other people. ∙ A large, clear, high contrast display ensures you can easily read your position in any light conditions. ∙ Optimal battery use based on speed of travel and current charge level ensures all day use. ∙ No Adverts. GPS UTM - know where you are.

Screenshots

GNSS View2 screens
Tomstrails GPS UTM3 screens

Verdict

The call

The clearest difference is in-app purchases: GNSS View at none against Tomstrails GPS UTM's 1. GNSS View also leads on iOS requirement (14.0 vs 18.0). Tomstrails GPS UTM's advantage is rating (4.8 vs 4.3) and ratings volume (1.6K vs 19). On price, ads and device support 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. Tomstrails GPS UTM sells 1 one-off in-app purchase. GNSS View asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Tomstrails GPS UTM holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Tomstrails GPS UTM has 1.6K ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 69% of GNSS View's written reviews are positive against 84% of Tomstrails GPS UTM's.

UpkeepUpdate frequency

GNSS View ships an update every 7 months, Tomstrails GPS UTM every 6 weeks. Both last shipped on October 24, 2026.

Scorecard7 real differences · 3 level
GNSS View versus Tomstrails GPS UTM: the parameters behind the verdict, then further details
ParameterGNSS ViewTomstrails GPS UTM
PriceFreeFree
Rating4.3 (19 ratings)4.8 (1.6K ratings) — better
Positive reviews68.8% of reviews83.8% of reviews — better
Number of ratings191.6K — better
Update frequencyEvery 7 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS14.0 — better18.0
Further details — not scored
Size4 MB8 MB
Age rating4+4+
DeveloperNEC CorporationTomstrails.com

Customer experience

GNSS View

All ratings19 ratings
Positive84.2%
Neutral5.3%
Negative10.5%
Written reviews16 reviews
Positive68.8%
Neutral6.3%
Negative25.0%

Tomstrails GPS UTM

All ratings1,607 ratings
Positive94.3%
Neutral2.6%
Negative3.1%
Written reviews154 reviews
Positive83.8%
Neutral7.1%
Negative9.1%

Bugs and requests

GNSS View

Not enough reviews yet to summarise bugs or requests.

Tomstrails GPS UTM

Reported bugs

2 issues
  • Stopped working after iOS update
  • UTM grids were off initially, required setting changes

Requested features

4 requests
  • Add support for Morocco coordinate system
  • Add option to average readings and hold the result
  • Add option to reduce coordinate display to 6 digits for emergency use
  • Bring back previous features like degrees/minutes display and ability to edit messages

In-app purchases

None

GNSS View

No in-app purchases

1 purchases

Tomstrails GPS UTM

One-time1
  • Feature PackFree

Questions

Is GNSS View free?
GNSS View is free to download, with no in-app purchases.
Is Tomstrails GPS UTM free?
Tomstrails GPS UTM is free to download, with in-app purchases available.
Which has better reviews, GNSS View or Tomstrails GPS UTM?
Tomstrails GPS UTM is rated higher. GNSS View averages 4.3 out of 5 from 19 ratings, while Tomstrails GPS UTM averages 4.8 from 1.6K ratings.
Do GNSS View or Tomstrails GPS UTM have ads?
Neither GNSS View nor Tomstrails GPS UTM shows ads.
Which is updated more often, GNSS View or Tomstrails GPS UTM?
GNSS View ships an update every 7 months, and Tomstrails GPS UTM every 6 weeks. Most recently, GNSS View was updated on October 24, 2026 and Tomstrails GPS UTM on October 24, 2026.

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