CoronaSDR vs Micboard Spectrum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CoronaSDR
This application allows users to connect to and control RTL-SDR servers on their local network. It provides live spectrum and waterfall displays, various demodulation modes, and DSP controls for audio filtering and signal tuning. Users can save favorite stations and adjust RF settings.
- Live spectrum and waterfall display
- Multiple demodulation modes (AM, NFM, WFM, USB, LSB, CW)
- DSP controls (squelch, AGC, filters)
- Station favorites with import/export
- RF controls (PPM, tuner options)
- Diagnostics and performance pipeline
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CoronaSDR is an iOS app for listening to rtl_tcp SDR servers over your local network. Key features: - Live spectrum and waterfall rendering - Demodulation modes: AM, NFM, WFM, USB, LSB, CW - DSP controls: squelch, AGC, audio filters, de-emphasis - Station favorites with import/export - RF controls such as PPM and tuner options (hardware/server dependent) - Diagnostics and a performance-focused pipeline No account is required. Set your rtl_tcp host and port, connect, and tune. Built by Silviu YO6SAY for the radio community.
Micboard Spectrum
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Micboard Spectrum turns an ADALM-Pluto into a pocket RF spectrum analyzer. Features: • Multi-Band Scanning: Automatically sweep across multiple bands. • Live spectrum trace and waterfall. • CSV Export Engine: Export scans, peak, and average scans from one or multiple bands. • Rolling scan storage: Scans are always stored, tag the ones you want to keep. Requires an ADALM-Pluto SDR running maia-sdr firmware. No hardware? Tap Demo Mode to explore with real recorded spectrum.
Screenshots
Verdict
CoronaSDR and Micboard Spectrum are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | CoronaSDR | Micboard Spectrum |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (10 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 9 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Alien Systems S.R.L. | Karl Swanson |
In-app purchases
CoronaSDR
No in-app purchases
Micboard Spectrum
No in-app purchases
