# CheckSite vs splotRF

The clearest difference is update cadence: splotRF at every 10 days against CheckSite's every 13 months. CheckSite's advantage is iOS requirement (14.0 vs 18.0). On price, ads, 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.

CheckSite ships an update every 13 months, splotRF every 10 days. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | CheckSite | splotRF |
| --- | --- | --- |
| 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 | No |
| Update frequency | Every 13 months | **Every 10 days** |
| Monetization | — | Free |
| Size | 1 MB | 6 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 17+ | 4+ |
| Developer | [Colorize](https://appshunter.io/developer/884132635) | [DirectRF](https://appshunter.io/developer/1572692412) |

## What reviewers say

### CheckSite

[App page](https://appshunter.io/ios/app/checksite/id1229462941)

**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 CheckSite free?

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

### Is splotRF free?

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

### Do CheckSite or splotRF have ads?

Neither CheckSite nor splotRF shows ads.

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

CheckSite ships an update every 13 months, and splotRF every 10 days. Most recently, CheckSite was updated on October 7, 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.*