# iMSO2 vs splotRF

The clearest difference is update cadence: splotRF at every 10 days against iMSO2's every 2 months. iMSO2's advantage is iOS requirement (11.0 vs 18.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for iMSO2 against 5.0 for splotRF. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

iMSO2 ships an update every 2 months, splotRF every 10 days. Both last shipped on October 13, 2026.

## The numbers

| Metric | iMSO2 | splotRF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/imso2/id658508510/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/splotrf/id1599892560/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Free | Free |
| Size | 11 MB | 6 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Oscium LLC](https://appshunter.io/developer/411757369) | [DirectRF](https://appshunter.io/developer/1572692412) |

## What reviewers say

### iMSO2

[App page](https://appshunter.io/ios/app/imso2/id658508510)

Analyze analog and digital signals on your mobile device using specialized hardware. Offers a demo mode for simulated wave display and measurements, with full functionality unlocked by purchasing the iMSO-204 mixed signal oscilloscope hardware.

**Highlights:** Analyze analog and digital signals, Simulated wave display, Cursors with measurements, Direct signal measurements, Analog and digital triggering, Hardware integration

**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 iMSO2 free?

iMSO2 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, iMSO2 or splotRF?

iMSO2 and splotRF are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do iMSO2 or splotRF have ads?

Neither iMSO2 nor splotRF shows ads.

### Which is updated more often, iMSO2 or splotRF?

iMSO2 ships an update every 2 months, and splotRF every 10 days. Most recently, iMSO2 was updated on October 13, 2026 and splotRF on October 13, 2026.

---

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