# Wonder Circuits vs Cadenza

Wonder Circuits and Cadenza are too close to call on the numbers: across 10 compared parameters — price, rating, review sentiment and ratings volume among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Wonder Circuits sells 1 one-off in-app purchase and Cadenza sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Wonder Circuits against 5.0 for Cadenza. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Wonder Circuits ships an update every 6 days, Cadenza every 4 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | Wonder Circuits | Cadenza |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/wonder-circuits-digital-logic/id6756538467/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/cadenza-morse-code-trainer/id6785429210/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 72 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [亚娟 秦](https://appshunter.io/developer/1539395142) | [Ivan Terekhin](https://appshunter.io/developer/888645337) |

## What reviewers say

### Wonder Circuits

[App page](https://appshunter.io/ios/app/wonder-circuits-digital-logic/id6756538467)

Explore digital logic with interactive lessons and a hands-on simulator. Build complex circuits, including a four-bit computer, and learn to program it. The app offers a free introductory experience with an optional one-time purchase for full access.

**Highlights:** 62 digital logic lessons, Build binary adders and registers, Assemble a four-bit computer, Write programs for the computer, Logic Lab simulator, Save and share circuit blueprints, Offline functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Content | $2.99 | one-time |


### Cadenza

[App page](https://appshunter.io/ios/app/cadenza-morse-code-trainer/id6785429210)

Learn Morse code by ear using the Koch method with adaptive learning. Practice characters, decode messages, and improve your skills with various tools. Offers offline functionality and no ads.

**Highlights:** Learn Morse code by ear, Adaptive Koch method training, Character, number, and punctuation trainer, Morse code decoder and translator, Offline functionality, Progress tracking and achievements

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cadenza Pro | $6.99 | per month |
| Cadenza Pro | $29.99 | per year |
| Cadenza Pro Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Wonder Circuits free?

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

### Is Cadenza free?

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

### Which has better reviews, Wonder Circuits or Cadenza?

Wonder Circuits and Cadenza are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Wonder Circuits or Cadenza have ads?

Neither Wonder Circuits nor Cadenza shows ads.

### Which is updated more often, Wonder Circuits or Cadenza?

Wonder Circuits ships an update every 6 days, and Cadenza every 4 days. Most recently, Wonder Circuits was updated on October 28, 2026 and Cadenza on October 28, 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.*