# Signal Code vs arDef

Signal Code and arDef both sit at 4.6 stars, but that hides the real split: 40% of Signal Code's written reviews are positive against 0% of arDef's. Signal Code also leads on ratings volume (105 vs 23). arDef's advantage is update cadence (every 6 days vs every 6 weeks). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Signal Code sells 2 in-app purchases, starting at $7.99 per 7 days and arDef sells 1 in-app purchase, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Signal Code against 4.5 for arDef. Both are backed by a comparable volume of ratings — 105 and 23 respectively. Written reviews are what separate them: 40% of Signal Code's written reviews are positive against 0% of arDef's.

Signal Code ships an update every 6 weeks, arDef every 6 days. The most recent releases landed on June 11, 2026 and August 7, 2026 respectively.

## The numbers

| Metric | Signal Code | arDef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (105 ratings)](https://appshunter.io/ios/app/signal-code/id6740325020/reviews)** | [4.5 (23 ratings)](https://appshunter.io/ios/app/ardef/id6742397203/reviews) |
| Number of ratings | **105** | 23 |
| Positive reviews | **40.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 27 MB | 51 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Heliostar LTD](https://appshunter.io/developer/1789516649) | [ANALYTIC SERVICES LTD](https://appshunter.io/developer/1537074268) |

## What reviewers say

### Signal Code

[App page](https://appshunter.io/ios/app/signal-code/id6740325020)

This app is a comprehensive tool for learning and using Morse code. It allows instant translation between text and Morse code, offers an exploration of the Morse alphabet, and keeps a history of your translations for easy review and practice.

**Highlights:** Text-to-Morse translation, Morse to text translation, Morse alphabet exploration, Translation history, Learning tool

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $7.99 | per 7 days |
| Premium | $9.99 | per 7 days |


### arDef

[App page](https://appshunter.io/ios/app/ardef/id6742397203)

Transform your device into a powerful measuring tool using augmented reality. Accurately measure dimensions, angles, and distances directly through your camera. Ideal for professionals and DIY enthusiasts, it offers intuitive controls and the ability to save and share your measurements.

**Highlights:** Accurate length, height, and width measurements, Precise angle calculations, Seamless distance measurement, 3D space mapping of rooms, Intuitive and user-friendly interface, Save and share measurements

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription | $9.99 | per 7 days |


## Frequently asked questions

### Is Signal Code free?

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

### Is arDef free?

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

### Which has better reviews, Signal Code or arDef?

Signal Code is rated higher. Signal Code averages 4.6 out of 5 from 105 ratings, while arDef averages 4.5 from 23 ratings.

### Do Signal Code or arDef have ads?

Neither Signal Code nor arDef shows ads.

### Which is updated more often, Signal Code or arDef?

Signal Code ships an update every 6 weeks, and arDef every 6 days. Most recently, Signal Code was updated on June 11, 2026 and arDef on August 7, 2026.

---

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