fx12 vs Thermal Sniffer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
fx12
This utility app connects to specific hardware devices, allowing real-time viewing and modification of parameters like altimeter and GPS data. An optional smartwatch app extends functionality to display telemetry and control models remotely. Be aware that background location usage may impact battery life.
- View and change device parameters
- Real-time altimeter data
- Real-time GPS data
- Optional Apple Watch app
- Remote model control
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fx12 is the companion app to fx12, fxRDT and fxWS devices. It provides a interface to view & change parameters of fx12 and fxRDT, including altimeter & GPS data in realtime. The optional Apple Watch app shows the realtime telemetry and allows you to RDT the model. This app may use your location even when it isn’t open, which can decrease device battery life. Continued use of GPS running in the background can dramatically decrease battery life.
Thermal Sniffer
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Thermal Sniffer is a device which can be used to find thermal activity for any free flight aeromodelling class. This companion app shows the temperature, pressure and wind activity on a graphical interface.
Screenshots
Verdict
The clearest difference is update cadence: Thermal Sniffer at every 6 days against fx12's every 2 months. fx12's advantage is iOS requirement (9.3 vs 17.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
fx12 ships an update every 2 months, Thermal Sniffer every 6 days. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.
| Parameter | fx12 | Thermal Sniffer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 9.3 — better | 17.0 |
| Further details — not scored | ||
| Size | 38 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Favionics | i-developer IT Beratung UG (haftungsbeschränkt) |
In-app purchases
fx12
No in-app purchases
Thermal Sniffer
No in-app purchases
