CheckSite vs splotRF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CheckSite
Read full descriptionHide full description
CheckSite: find potential problems in HTML and CSS When making websites, you need to keep an eye on two types of standards: the official web standards, which are checked by the W3C Validator, and the unofficial standard of making sure that your website actually works as intended on all commonly used browsers. The advantage of using CheckSite is that it checks both, and that it does it automatically for all pages within your website. When done, CheckSite will produce an overview of all potential issues found in all pages, including an easy-to-read summary. Main features • CheckSite is fast and user friendly • Checks against both web standards, known issues, and best practices • Finds links to other pages in your website and checks them as well • Gives an easy-to-read summary of the results The checks • Browser compatibility (e.g. does the page use constructs that are known to cause problems in certain browsers?) • SEO (e.g. does the page adhere to SEO guidelines?) • User experience (e.g. does the page have a favicon?) • Internationalization (e.g. does the page use UTF-8 encoding?) If you like our app, please rate it in the Mac App Store so that we can use your feedback and keep creating updates.
splotRF
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.
- 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
Read full descriptionHide full description
Key Features: • plots .snp format s-parameter touchstone data • stability circles for load and source • µ and µ' for load and source stability • interactive data markers • overlay multiple trace data on a single plot • overlay trace data from multiple files • view data as a table list • arbitrary number of ports (.s1p, .s2p, s3p…snp support) • S/Y/Z matrix conversion • mA/RI/dB formatting • interpolation over frequency • exports vector graphics to .pdf • plotting display properties and configuration are saved within file comments • automated grid layout • Smith Chart, Polar and Rectangular plots • reads and plots .zip archives containing s-parameter data
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | CheckSite | splotRF |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 13 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 1 MB | 6 MB |
| Age rating | 17+ | 4+ |
| Developer | Colorize | DirectRF |
In-app purchases
CheckSite
No in-app purchases
splotRF
No in-app purchases









