Comparison

CheckSite vs splotRF

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CheckSite

Features
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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.

About

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.

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
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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

CheckSite2 screens
splotRF3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences · 7 level
CheckSite versus splotRF: the parameters behind the verdict, then further details
ParameterCheckSitesplotRF
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 13 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS14.0 — better18.0
Further details — not scored
Size1 MB6 MB
Age rating17+4+
DeveloperColorizeDirectRF

In-app purchases

None

CheckSite

No in-app purchases

None

splotRF

No in-app purchases

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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