# CoronaSDR vs Simple Morse Code Keyboard

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.

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.

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.

## The numbers

| Metric | CoronaSDR | Simple Morse Code Keyboard |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/coronasdr-rtl-sdr-client/id6759222137/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 5 MB | 49 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alien Systems S.R.L.](https://appshunter.io/developer/1047123293) | [BioRust Studios](https://appshunter.io/developer/1882916354) |

## What reviewers say

### CoronaSDR

[App page](https://appshunter.io/ios/app/coronasdr-rtl-sdr-client/id6759222137)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Simple Morse Code Keyboard

[App page](https://appshunter.io/ios/app/simple-morse-code-keyboard/id6762234809)

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*