# iSDR vs Morse Code

The clearest difference is price: Morse Code at Free against iSDR's $0.99. Morse Code also leads on rating (4.6 vs 2.5) and update cadence (every 5 days vs every 3 months). iSDR's advantage is iOS requirement (9.0 vs 15.0). On ads and in-app purchases there is nothing between them.

Morse Code is free to download; iSDR costs $0.99 up front. iSDR sells 1 one-off in-app purchase and Morse Code sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Morse Code holds the better App Store score, 4.6 against 2.5. That said, the two scores are not equally well evidenced: Morse Code has 242 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 52% of iSDR's written reviews are positive against 69% of Morse Code's.

iSDR ships an update every 3 months, Morse Code every 5 days. The most recent releases landed on October 4, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | iSDR | Morse Code |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.5 (11 ratings)](https://appshunter.io/ios/app/isdr/id480077371/reviews) | **[4.6 (242 ratings)](https://appshunter.io/ios/app/morse-code-morse-master/id1664039661/reviews)** |
| Number of ratings | 11 | **242** |
| Positive reviews | 51.7% of reviews | **68.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 36 MB | 46 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Digital Confections LLC](https://appshunter.io/developer/480077374) | [亚娟 秦](https://appshunter.io/developer/1539395142) |

## What reviewers say

### iSDR

[App page](https://appshunter.io/ios/app/isdr/id480077371)

This app allows experimenters and amateur radio enthusiasts to build a portable software-defined radio receiver using their iOS device. It processes radio signals using the device's processor and offers various display and filtering modes. Additional hardware is required for live signal reception.

**Highlights:** Six receive mode settings (USB, LSB, CW, AM, FM, Binaural), Selectable bandwidth settings, 120 dB dynamic range signal strength meter, Three AGC settings (fast, slow, off), Spectrum, Waterfall, and Oscilloscope display modes, Supports downloaded audio-format spectrum files via iTunes, Embed center frequency in file names for automatic display

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Wi-Fi Radio Control | Free | one-time |


### Morse Code

[App page](https://appshunter.io/ios/app/morse-code-morse-master/id1664039661)

Learn and master Morse code with this app. It features AI-powered audio decoding, interactive practice games, and a comprehensive code table. Customize your learning experience and track your progress.

**Highlights:** AI audio decoding, Practice games, Morse code table, Bidirectional translation, Customizable settings, Progress tracking

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Morse Master PRO Monthly | $0.99 | per month |
| Morse Master PRO Annual | $2.99 | per year |
| Unlock full version | $0.99 | one-time |
| Morse Master PRO Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is iSDR free?

iSDR costs $0.99, and also offers in-app purchases.

### Is Morse Code free?

Morse Code is free to download, with in-app purchases available.

### Which has better reviews, iSDR or Morse Code?

Morse Code is rated higher. iSDR averages 2.5 out of 5 from 11 ratings, while Morse Code averages 4.6 from 242 ratings.

### Do iSDR or Morse Code have ads?

Neither iSDR nor Morse Code shows ads.

### Which is updated more often, iSDR or Morse Code?

iSDR ships an update every 3 months, and Morse Code every 5 days. Most recently, iSDR was updated on October 4, 2026 and Morse Code on October 13, 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.*