FieldFox vs SigTrax
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.
SigTrax
This app helps users locate signal origins by plotting bearings and identifying intersection points. It simplifies the tracking process with mobile device capabilities, offering features like automatic Crosspoint calculation and driving directions to identified locations.
- Plot bearings and determine Crosspoints
- High precision GPS locating
- Handheld mapping
- Automatic Crosspoint management
- Driving maps with voice routing
- Archive and retrieve bearing collections
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Signal Tracking Toolkit SigTrax is the signal tracker’s toolkit combining the power and visual capabilities of IOS mobile devices with high precision GPS locating and hand held mapping to plot bearings and determine Crosspoints™, locations where bearing lines cross, potentially the location of a signal’s origin. THE SIGTRAX DIFFERENCE Signal tracking has always been a vital resource, assisting in emergency situations,locating interference or noise sources and serving as a valuable asset for spectrum monitoring. SigTrax expands this resource by supplying tools that allow signal trackers to find the origin of signals faster with more accurate results. SIMPLIFY THE TRACKING PROCESS The advent of mobile smart devices allows us to have tools that before were either non-existent or like the signal trackers collection of papers, maps and marking instruments, unwieldy to carry and use. With SigTrax, manually handling maps, plotting intersection points and determining a route to reach an intersection point is eliminated, simplifying searches resulting in faster and more accurate results. BEARINGS AND CROSSPOINTS™ Bearings are lines from a starting coordinate toward a compass heading as an indication of the approximate direction of a signal. Bearings can be entered into SigTrax in multiple ways, selectively viewed, edited or deleted. Bearing collections can be archived then retrieved at a later time, vital when tracking signals over long time periods. Crosspoints, locations where bearing lines intersect, are automatically managed when bearings are added, deleted or edited. Driving maps complete with text and voice routing instructions direct the user to a Crosspoint location. EASY TO USE The SigTrax user interface was designed to be simple and easy to use in less than ideal conditions. SigTrax can be customized to individual preferences and needs using the Settings function. A complete User Guide is included for quick reference. SigTrax+ OPTIONAL FEATURES SigTrax+ optional purchasable features expand the signal tracking toolkit. SigShare™ allows bearings and archives to be displayed in a large format such as Google Earth, ideal for presentations. DataTrax™ is a smart interface that automatically inserts and plots bearing generated from external systems such as Doppler. The SigTrax website details DataTrax features and requirement. TraxTeam™ allows cooperative hunting, a foundation of signal tracking, that greatly extends the possibility of a successful and timely hunt, vital in emergency situations. Multiple trackers form a TraxTeam™ instantaneously sharing bearing information with the hunt group. REQUIREMENTS Requires IOS device with GPS and internet access to obtain map images. FURTHER INFORMATION Check the SigTrax web site to discover the SigTrax difference. Be sure to explore the video series and User Guide to learn more about the benefits of signal tracking with SigTrax. SUBSCRIPTIONS SigTrax offers auto-renewing subscription as in-app purchases to access TraxTeam. TraxTeam 3 Month is a three-month access to TraxTeam. TraxTeam One Year is a one-year access to TraxTeam. Please read about the auto-renewing TraxTeam subscriptions before purchasing. Payment will be charged to your iTunes account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to then the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to a product. Please review the TraxTeam terms-of-use policy: www.sigtrax.com/tos.html and our privacy policy at www.sigtrax.com#privacy.
Screenshots
Verdict
The clearest difference is price: FieldFox at Free against SigTrax's $2.99. FieldFox also leads on review sentiment (100% vs 60%) and in-app purchases (none vs 2). SigTrax's advantage is update cadence (every 3 months vs every 12 months) and chart position (#197 vs unranked). On ratings volume, 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
FieldFox is free to download; SigTrax costs $2.99 up front. SigTrax sells 2 one-off in-app purchases. FieldFox asks for nothing beyond the download.
FieldFox holds the better App Store score, 4.0 against 3.6. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews point the same way: 100% of FieldFox's written reviews are positive against 60% of SigTrax's.
FieldFox ships an update every 12 months, SigTrax every 3 months. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.
| Parameter | FieldFox | SigTrax |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.0 (4 ratings) — better | 3.6 (8 ratings) |
| Positive reviews | 100.0% of reviews — better | 60.0% of reviews |
| Number of ratings | 4 | 8 — better |
| Update frequency | Every 12 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Paid |
| Best chart rank | — | #197 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 27 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Keysight Technologies, Inc. | Amcept, LLC |
Customer experience
FieldFox
SigTrax
In-app purchases
FieldFox
No in-app purchases
SigTrax
- SigShare$1.99
- DataTrax$5.99









