Comparison

CoronaSDR vs Simple Morse Code Keyboard

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Simple Morse Code Keyboard

Read full description

Type in Morse Code — anywhere on iOS. A full system Morse Code Keyboard that replaces your standard one with a real CW keyer. Send a text, write an email, or post to social — all in dits and dahs. Built for ham radio operators who want authentic CW feel on mobile, and for learners who pick up the code fastest by using it every day. Keying Styles • Straight Key • Single Paddle • Iambic Paddle • Adjustable WPM Supported Morse Code Alphabets • ITU International • Spanish • Russian • Ukrainian • Bulgarian • Greek • Hebrew • Arabic • Persian • Kurdish • Japanese Wabun (Kana code) Designed for iOS • System-wide Morse Code Keyboard — works in every app • Portrait and landscape layouts • Low-latency input tuned for high WPM • Fully configurable Morse Code Keyboard For experts: the responsiveness and timing controls you need to send clean code at speed. For beginners: the best Morse Code trainer is daily use. Replace your keyboard, build muscle memory, and learn Morse code without "studying" it. Download the Morse Code Keyboard today and put a key in your pocket. 73!

Screenshots

CoronaSDR3 screens
Simple Morse Code Keyboard4 screens

Verdict

The call

The clearest difference is price: CoronaSDR at Free against Simple Morse Code Keyboard's $4.99. Simple Morse Code Keyboard's advantage is update cadence (weekly vs every 3 weeks) and iOS requirement (16.0 vs 18.0). On 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

CoronaSDR is free to download; Simple Morse Code Keyboard costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CoronaSDR ships an update every 3 weeks, Simple Morse Code Keyboard weekly. The most recent releases landed on September 5, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 7 level
CoronaSDR versus Simple Morse Code Keyboard: the parameters behind the verdict, then further details
ParameterCoronaSDRSimple Morse Code Keyboard
PriceFree — better$4.99
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.016.0 — better
Further details — not scored
Size5 MB49 MB
Age rating4+4+
DeveloperAlien Systems S.R.L.BioRust Studios

In-app purchases

None

CoronaSDR

No in-app purchases

None

Simple Morse Code Keyboard

No in-app purchases

Questions

Is CoronaSDR free?
CoronaSDR is free to download, with no in-app purchases.
Is Simple Morse Code Keyboard free?
Simple Morse Code Keyboard costs $4.99, with no in-app purchases.
Do CoronaSDR or Simple Morse Code Keyboard have ads?
Neither CoronaSDR nor Simple Morse Code Keyboard shows ads.
Which is updated more often, CoronaSDR or Simple Morse Code Keyboard?
CoronaSDR ships an update every 3 weeks, and Simple Morse Code Keyboard weekly. Most recently, CoronaSDR was updated on September 5, 2026 and Simple Morse Code Keyboard on September 14, 2026.

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