SkyGuardTWX vs GNSS Planning Map
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SkyGuardTWX
This companion tool wirelessly configures a UAT ADS-B Transceiver. It allows setup of parameters like N-Number, ICAO code, and flight plan squawk. Advanced models enable real-time squawk code and pressure altitude display.
- Wireless transceiver configuration
- N-Number setup
- Transponder ICAO code setting
- Flight Plan/Squawk code management
- Manual squawk code changes (Vision-Pro)
- Real-time squawk code display (Vision-Pro Plus)
- Pressure altitude display (Vision-Pro Plus)
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This app is a companion tool for use with the SkyGuardTWX UAT ADS-B Transceiver. It allows wireless configuration of all required setup parameters such as N-Number, Transponder ICAO code, and Flight Plan/Squawk code. The app is capable of manually changing aircraft squawk codes as issued by ATC while in flight if you have the Vision-Pro model of the SkyGuardTWX UAT Transceiver. Version 2.0.7 and greater is capable of displaying realtime squawk code and pressure altitude as acquired from your Mode C Transponder as long as you have a Vision-Pro Plus Model of the SkyGuardTWX UAT Transceiver.
GNSS Planning Map
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GNSS Planning Map shows you, before you leave the office, when and where satellite geometry (DOP) will be good or poor. Drag a time-travel slider and watch a DOP heatmap turn green or red across the map — so you never arrive on site only to find the constellation is too weak to get a fix. Try every feature free for the first 30 days, right on your phone. [ Main features ] - DOP forecast heatmap: see how PDOP and the visible-satellite count change through the day across an area, from green (good) to red (poor). - Time-travel slider: jump to "next Thursday 14:30" and read the sky instantly. Orbits come from CelesTrak TLE with SGP4/SDP4 propagation. - Tap any point for an instant GO / NO-GO: PDOP, satellite count, and a per-constellation breakdown for that exact site and time. - Configurable rules: turn each constellation on/off (GPS, QZSS, GLONASS, Galileo, BeiDou, NavIC), set the elevation mask, minimum satellites and a PDOP limit. Nine built-in presets: GPS only, GPS + GLONASS, All GNSS, Public survey (JP), Survey / Cadastral, GIS / Mapping, Maritime / Navigation, UAV / Drone, Photogrammetry / 3D. - PDF work-order / evidence export: save a site and its recommended work windows as a one-page report. - Field-ready: once data is cached the forecast works offline. [ Who it is for ] Land surveyors, UAV / drone mapping and inspection teams, and GIS / infrastructure crews who plan RTK/PPK sessions and want to avoid wasted trips and reschedules. [ Honest notes ] The core forecast (orbits to DOP to heatmap) is global and works anywhere. This app is a planning aid based on orbital prediction; it does not guarantee field results — always verify on site. Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: SkyGuardTWX at none against GNSS Planning Map's 2. SkyGuardTWX also leads on iOS requirement (11.0 vs 15.0). GNSS Planning Map's advantage is update cadence (weekly vs every 3 months). 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
Both are free to download. GNSS Planning Map sells 2 in-app purchases, starting at $15.00 per month. SkyGuardTWX asks for nothing beyond the download.
SkyGuardTWX ships an update every 3 months, GNSS Planning Map weekly. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.
| Parameter | SkyGuardTWX | GNSS Planning Map |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 8 MB | 72 MB |
| Age rating | 4+ | 4+ |
| Developer | SkyGuardTWX LLC | QAEE CONPUUTENG |
In-app purchases
SkyGuardTWX
No in-app purchases
GNSS Planning Map
- GNSS Monthly$15.001 Month
- GNSS Yearly$150.001 Year
Questions
Is SkyGuardTWX free?
Is GNSS Planning Map free?
Do SkyGuardTWX or GNSS Planning Map have ads?
Which is updated more often, SkyGuardTWX or GNSS Planning Map?
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