# FieldFox vs splotRF

The clearest difference is rating: splotRF at 5.0 against FieldFox's 4.0. splotRF also leads on update cadence (every 10 days vs every 12 months). FieldFox's advantage is iOS requirement (12.0 vs 18.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

splotRF holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

FieldFox ships an update every 12 months, splotRF every 10 days. The most recent releases landed on October 8, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | FieldFox | splotRF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/fieldfox/id635077328/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/splotrf/id1599892560/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 10 days** |
| Monetization | Free | Free |
| Size | 27 MB | 6 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Keysight Technologies, Inc.](https://appshunter.io/developer/903911491) | [DirectRF](https://appshunter.io/developer/1572692412) |

## What reviewers say

### FieldFox

[App page](https://appshunter.io/ios/app/fieldfox/id635077328)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### splotRF

[App page](https://appshunter.io/ios/app/splotrf/id1599892560)

Visualize and analyze touchstone S-parameter data with interactive plots. Supports multiple file overlays, stability calculations, and various matrix conversions. Export data in vector graphics formats.

**Highlights:** Plot .snp format S-parameter data, Stability circles and µ/µ' analysis, Overlay multiple trace data, View data as a table, S/Y/Z matrix conversion, Smith Chart, Polar, and Rectangular plots, Export to PDF

**In-app purchases:** none


## Frequently asked questions

### Is FieldFox free?

FieldFox is free to download, with no in-app purchases.

### Is splotRF free?

splotRF is free to download, with no in-app purchases.

### Which has better reviews, FieldFox or splotRF?

splotRF is rated higher. FieldFox averages 4.0 out of 5 from 4 ratings, while splotRF averages 5.0 from 2 ratings.

### Do FieldFox or splotRF have ads?

Neither FieldFox nor splotRF shows ads.

### Which is updated more often, FieldFox or splotRF?

FieldFox ships an update every 12 months, and splotRF every 10 days. Most recently, FieldFox was updated on October 8, 2026 and splotRF on September 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*