FieldFox vs RF Path
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FieldFox
This application allows for remote viewing and control of Keysight FieldFox handheld analyzers. Mirror the instrument's display on your iOS device and access product documentation. Full remote control requires a specific instrument option.
- Remote viewing of FieldFox instruments
- Full remote control with option 030
- Instrument display mirroring
- Access to product manuals and brochures
- View and share documentation
- Portrait and landscape orientation support
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For Use with Keysight Technologies FieldFox handheld analyzers. Provides remote viewing capability for FieldFox instruments, or full remote control if the FieldFox is outfitted with instrument remote connectivity option 030. Contact Keysight Technologies for details on option 030. The FieldFox Remote Viewer application is used to remotely monitor or remotely control a FieldFox instrument. Connect FieldFox to wired LAN and power, then connect your IOS device to WIFI or cellular to remotely monitor or control the instrument. Once connected, the instrument display is mirrored to the IOS device. If the FieldFox has been outfitted with instrument option 030, full remote control can be performed from the iPod, iPhone or iPad (running IOS 7.1 or later). Portrait and Landscape orientations are supported with Landscape providing a full screen view of the data screen (with popup keyboard), and portrait providing a visual representation of the FieldFox display and keyboard together. Included in the app is a variety of online resources including product manuals, brochures, app notes, and training videos. Product documentation can be viewed and shared with third party apps such as iBooks, for offline storing and viewing. (Note WIFI or cellular connection required for all documentation content except the Intro Video, which is locally stored in the app). Connections to the remote FieldFox instrument can be made from anywhere the IOS device has network connections that can reach the instrument LAN connection. Note: Using cellular connectivity may produce slower connection response than WIFI, and may incur carrier data usage charges. Note: For remote viewing or remote control, a FieldFox instrument (not included) is required. Contact Keysight via the support link for information on how to purchase a FieldFox instrument for use with this program. Note: For remote viewing only, no additional FieldFox instrument licenses are required. For full remote control, FieldFox instrument option 030 is required. Contact Keysight Technologies for full details on how to outfit a FieldFox with this option.
RF Path
Calculate radio frequency propagation loss using various models like Irregular Terrain, Okumura-Hata, and COST-231. Supports area and point-to-point predictions, with results exportable via email or social media.
- Multiple propagation models (Irregular Terrain, Okumura-Hata, COST-231)
- Area Prediction mode
- Point-to-Point prediction mode
- Elevation profile display
- Results export (CSV)
- Save to iCloud
- Share to social media
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RF Path provides propagation loss calculations for radio frequencies (RF) between 20 MHz and 20 GHz using either the Irregular Terrain model, Okumura-Hata model, COST-231 Hata Extension model, or the COST-231 Walfish-Ikegami model. The calculations are based on both electromagnetic theory and the statistical analysis of terrain characteristics to calculate the degradation of the RF wave as a function of distance and the variability of the RF wave with respect to time and space. The Irregular Terrain Model has two different prediction models. One is the Area Prediction mode which calculates propagation losses over an area where the exact terrain parameters are not known, but approximated using terrain roughness, environmental parameters and statistical parameters. The second is a point-to-point mode where specific latitude/longitude pair values are entered for both transmitter and receiver. Environmental parameters and statistical parameters are also used in this prediction mode. The results may be saved to iCloud, emailed, or posted to Facebook or Twitter. The results are in CSV format. In the Area Prediction mode a table along with a graph shows the path loss over the distance entered into the settings. The graph is viewed by rotating the device once the results table is shown. In the Point-To-Point Prediction mode a table along with a graph shows the path loss and elevation profile of the RF path.
Screenshots
Verdict
The clearest difference is review sentiment: FieldFox at 100% against RF Path's 50%. FieldFox also leads on price (Free vs $2.99) and rating (4.0 vs 3.5). RF Path's advantage is update cadence (every 5 months vs every 12 months) and chart position (#197 vs unranked). On ratings volume, 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
FieldFox is free to download; RF Path costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
FieldFox holds the better App Store score, 4.0 against 3.5. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 100% of FieldFox's written reviews are positive against 50% of RF Path's.
FieldFox ships an update every 12 months, RF Path every 5 months. Both last shipped on October 8, 2026.
| Parameter | FieldFox | RF Path |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.0 (4 ratings) — better | 3.5 (4 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 4 | 4 |
| Update frequency | Every 12 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #197 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 27 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Keysight Technologies, Inc. | Tom Doherty |
Customer experience
FieldFox
RF Path
In-app purchases
FieldFox
No in-app purchases
RF Path
No in-app purchases









