# Shimmy Diagnoser vs Morse Code Trainer, CW Decoder

The clearest difference is price: Morse Code Trainer, CW Decoder at Free against Shimmy Diagnoser's $17.99. Morse Code Trainer, CW Decoder also leads on update cadence (fortnightly vs every 2 months). Shimmy Diagnoser's advantage is rating (3.5 vs 3.0) and in-app purchases (none vs 1). On ads and device support there is nothing between them.

Morse Code Trainer, CW Decoder is free to download; Shimmy Diagnoser costs $17.99 up front. Morse Code Trainer, CW Decoder sells 1 one-off in-app purchase. Shimmy Diagnoser asks for nothing beyond the download.

Shimmy Diagnoser holds the better App Store score, 3.5 against 3.0. That said, the two scores are not equally well evidenced: Shimmy Diagnoser has 8 ratings behind it against 1, so its average is the more settled of the two.

Shimmy Diagnoser ships an update every 2 months, Morse Code Trainer, CW Decoder fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Shimmy Diagnoser | Morse Code Trainer, CW Decoder |
| --- | --- | --- |
| Price | $17.99 | **Free** |
| Rating | **[3.5 (8 ratings)](https://appshunter.io/ios/app/shimmy-diagnoser/id1215880972/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/morse-code-trainer-cw-decoder/id6796642915/reviews) |
| Number of ratings | **8** | 1 |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 25 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DOAO Consulting AB](https://appshunter.io/developer/1181701800) | [Vislab](https://appshunter.io/developer/480699790) |

## What reviewers say

### Shimmy Diagnoser

[App page](https://appshunter.io/ios/app/shimmy-diagnoser/id1215880972)

This app acts as a vibration meter for your vehicle, detecting and analyzing vibrations to identify potential issues. It provides real-time graphs and statistics to help diagnose problems with engines, tires, or propshafts, assisting both DIY enthusiasts and professionals.

**Highlights:** Vibration detection and analysis, Real-time vibration graphing, Identification of vibration sources (engine, tire, propshaft), Vehicle database integration, Data storage and statistics, Built-in RPM calculations

**In-app purchases:** none


### Morse Code Trainer, CW Decoder

[App page](https://appshunter.io/ios/app/morse-code-trainer-cw-decoder/id6796642915)

Learn and practice Morse code with a comprehensive tool that translates text, sends signals, and decodes real-world audio. It offers structured lessons, progress tracking, and the ability to communicate directly with other devices. Unlock advanced features with a one-time purchase.

**Highlights:** Text to Morse code translation, Morse code to text decoding, Signal sending via sound, haptics, light, Structured learning lessons, Progress tracking and daily tests, Audio/video/image signal analysis, Direct device-to-device communication

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MORSE PRO One-Time Unlock | $8.99 | one-time |


## Frequently asked questions

### Is Shimmy Diagnoser free?

Shimmy Diagnoser costs $17.99, with no in-app purchases.

### Is Morse Code Trainer, CW Decoder free?

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

### Which has better reviews, Shimmy Diagnoser or Morse Code Trainer, CW Decoder?

Shimmy Diagnoser is rated higher. Shimmy Diagnoser averages 3.5 out of 5 from 8 ratings, while Morse Code Trainer, CW Decoder averages 3.0 from 1 ratings.

### Do Shimmy Diagnoser or Morse Code Trainer, CW Decoder have ads?

Neither Shimmy Diagnoser nor Morse Code Trainer, CW Decoder shows ads.

### Which is updated more often, Shimmy Diagnoser or Morse Code Trainer, CW Decoder?

Shimmy Diagnoser ships an update every 2 months, and Morse Code Trainer, CW Decoder fortnightly. Most recently, Shimmy Diagnoser was updated on October 24, 2026 and Morse Code Trainer, CW Decoder on October 24, 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.*