# splotRF vs MDPaper

The clearest difference is ads: splotRF at none against MDPaper's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

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

splotRF ships an update every 10 days, MDPaper every 2 weeks. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | splotRF | MDPaper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/splotrf/id1599892560/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 6 MB | 7 MB |
| Requires iOS | **18.0** | 18.6 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DirectRF](https://appshunter.io/developer/1572692412) | [Tomoaki Yagishita](https://appshunter.io/developer/387622096) |

## What reviewers say

### 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


### MDPaper

[App page](https://appshunter.io/ios/app/mdpaper/id6472578847)

**In-app purchases:** none


## Frequently asked questions

### Is splotRF free?

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

### Is MDPaper free?

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

### Do splotRF or MDPaper have ads?

MDPaper shows ads; splotRF does not.

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

splotRF ships an update every 10 days, and MDPaper every 2 weeks. Most recently, splotRF was updated on September 10, 2026 and MDPaper on September 8, 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.*