Mircules DX Cluster vs splotRF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mircules DX Cluster
Discover active amateur radio operators on various bands. View detailed DX spots including callsign, frequency, and comments. Access helpful HAM radio tools like calculators and calendars.
- DX Cluster information
- Amateur radio band support (MF/HF, VHF/UHF)
- Detailed DX spot listings
- HAM radio tools (calculators, calendars)
- Customizable DXSpider server connection
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Find out which interesting DX HAM Radio Amateur operators are “on the air” on the amateur radio bands! Mircules DX Cluster is an iPhone and iPad app that shows the info found on the international DX Cluster. This cluster is widely used by radio amateurs and SWL enthusiasts to find the DX "treasures" on the bands. You can use one of the two web clusters we provide or choose a DXSpider (telnet) server from our list. You can also manually add your own DXSpider server address. This functionality is still a work in progress so let us know what you think and how we can improve it! ALL POPULAR AMATEUR BANDS ARE INCLUDED - MF / HF bands (10m, 12m, 15m, 17m, 20m, 30m, 40m, 60m, 80m, 160m) - VHF / UHF bands (70cm, 1.25m, 2m, 4m, 6m) SEE THE DX SPOTS IN A CLEAR LIST Mircules DX Cluster shows the last 50 DX spots on the selected band in a clear list. ALL THE INFO YOU NEED! Information that is shown per spot item in the main list is: - callsign of the spotted Radio Amateur - country of the spotted Radio Amateur - frequency where the person can be found - time and date of the spotting - any comments added to the spot by the spotter - CQ Zone, ITU Zone and DXCC info of both Radio Amateurs - callsign and other info of the person that did the spotting - QRZ.COM information of both Radio Amateurs - a map of the country / entity of both Radio Amateurs TOOLS AND INFO A list of HAM radio tools are available, like: - Azimuth calculator - Contest calendar - Grid calculator - ITU prefixes - Q-Codes - UTC clock etc...
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
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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
Verdict
The clearest difference is price: splotRF at Free against Mircules DX Cluster's $2.99. splotRF also leads on rating (5.0 vs 4.0) and update cadence (every 10 days vs every 9 months). Mircules DX Cluster's advantage is chart position (#189 vs unranked) and iOS requirement (12.4 vs 18.0). On ratings volume, 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
splotRF is free to download; Mircules DX Cluster costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
splotRF holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
Mircules DX Cluster ships an update every 9 months, splotRF every 10 days. The most recent releases landed on August 25, 2026 and September 10, 2026 respectively.
| Parameter | Mircules DX Cluster | splotRF |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (1 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 9 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #189 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 12.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 99 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Mircules | DirectRF |
Customer experience
Mircules DX Cluster
splotRF
In-app purchases
Mircules DX Cluster
No in-app purchases
splotRF
No in-app purchases
