# SDRFE Spectrum Analyser vs SimpleCW

The clearest difference is in-app purchases: SDRFE Spectrum Analyser at none against SimpleCW's 1. SDRFE Spectrum Analyser also leads on update cadence (every 9 days vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SimpleCW sells 1 one-off in-app purchase. SDRFE Spectrum Analyser asks for nothing beyond the download.

SDRFE Spectrum Analyser ships an update every 9 days, SimpleCW every 5 weeks. The most recent releases landed on May 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | SDRFE Spectrum Analyser | SimpleCW |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 5 weeks |
| Size | 4 MB | 14 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [XionLogic Limited](https://appshunter.io/developer/1855294139) | [Jeroen Rombouts](https://appshunter.io/developer/1863358112) |

## What reviewers say

### SDRFE Spectrum Analyser

[App page](https://appshunter.io/ios/app/sdrfe-spectrum-analyser/id6758634671)

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

**In-app purchases:** none


### SimpleCW

[App page](https://appshunter.io/ios/app/simplecw-morse-decoder/id6759712691)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock TX Modes | $2.99 | one-time |


## Frequently asked questions

### Is SDRFE Spectrum Analyser free?

SDRFE Spectrum Analyser is free to download, with no in-app purchases.

### Is SimpleCW free?

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

### Do SDRFE Spectrum Analyser or SimpleCW have ads?

Neither SDRFE Spectrum Analyser nor SimpleCW shows ads.

### Which is updated more often, SDRFE Spectrum Analyser or SimpleCW?

SDRFE Spectrum Analyser ships an update every 9 days, and SimpleCW every 5 weeks. Most recently, SDRFE Spectrum Analyser was updated on May 17, 2026 and SimpleCW on September 21, 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.*