GNSS Analyzer vs Star Debug
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GNSS Analyzer
Record and analyze positioning data from QZSS-supported receivers. View satellite radar, signal strength, and current location on a map. Import logs to review past data and receive disaster management reports.
- Record NMEA positioning data
- View satellite radar and signal level
- Display current position on map
- Import and preview recorded NMEA logs
- Receive QZSS DC Reports
- Share NMEA log files via email
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This application enables you to record positioning data by the Quasi-Zenith Satellite System (QZSS) supported receiver. ●What is GNSS Analyzer？ GNSS Analyzer enables you to record positioning data (NMEA log) by the QZSS supported receiver. It is provided satellites radar and signal level (C/N). You can also see the current position on the map. In addition, you can import the recorded NMEA log and display on the radar and the map. Furthermore, you can receive messages of Satellite Report for Disaster and Crisis Management "DC Report" that is known as QZSS services. ※You need QZSS supported receiver that is leased for free in the website below. URL: https://qzss.go.jp/appli-demo/appli01_info.html ●GNSS Analyzer main functions 【NMEA】 ・It shows positioning data as NMEA log by the receiver that are connected to your device (BLE connection). ・You can record output NMEA log in your device. ・Those recorded NMEA log file can be shared by e-mail. 【MapSky】 ・It is provided satellites radar and signal level (C/N). ・You can also see the current position on the map. 【Preview】 ・You can import the recorded NMEA log and display satellites radar, signal level and map position of time that you select. 【DC Report】 ・It shows messages of "DC Report" from QZSS. ・You can select display language (English or Japanese) and filter massages by current location. ●Support version -iOS 26 -iOS 18 -iOS 17 -iOS 16 -iOS 15 -iOS 14
Star Debug
Manage your Starlink devices with this alternative tool. It allows you to decode debug data, initiate basic dish and router operations, view telemetry, and create shareable debug data files. The app also checks your internet connection.
- Decode DebugData JSON
- Initiate dish operations (Reboot, Stow, Unstow)
- Initiate router operations (Reboot, WiFi setup)
- View online telemetry and statuses
- Create and share DebugData JSON
- Check internet connection
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Star Debug is an alternative tool to manage your Starlink devices. Currently, it supports: - Decode and view DebugData json copied (or saved to file) from the official Starlink app or web panel. - Initiate basic operations with the dish: Reboot/Stow/Unstow/GPSon/off and with the router: reboot and basic wifi setup (if applicable). - View telemetry available in DebugData, but updated from Starlink online: statuses, alerts, basic stats, current configurations, etc. - Create and share DebugData-compatible json data. - Check the internet connection in place within the app. This application was created as part of the volunteer initiative "Narodnyi Starlink" for the needs of people who care about the availability of communications even in the places where the russian aggressor tries to turn cities into ashes.
Screenshots
Verdict
The clearest difference is review sentiment: Star Debug at 100% against GNSS Analyzer's 0%. Star Debug also leads on rating (5.0 vs 1.0) and update cadence (every 2 months vs every 12 months). GNSS Analyzer's advantage is iOS requirement (14.0 vs 16.0). 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.
Star Debug holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Star Debug has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of GNSS Analyzer's written reviews are positive against 100% of Star Debug's.
GNSS Analyzer ships an update every 12 months, Star Debug every 2 months. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.
| Parameter | GNSS Analyzer | Star Debug |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 12 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 24 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | NEC Corporation | Ihor Lytvynenko |
Customer experience
GNSS Analyzer
Star Debug
In-app purchases
GNSS Analyzer
No in-app purchases
Star Debug
No in-app purchases
Questions
Is GNSS Analyzer free?
Is Star Debug free?
Which has better reviews, GNSS Analyzer or Star Debug?
Do GNSS Analyzer or Star Debug have ads?
Which is updated more often, GNSS Analyzer or Star Debug?
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