# perli vs System Designer

The clearest difference is in-app purchases: System Designer at none against perli's 7. System Designer also leads on update cadence (monthly vs every 3 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. perli sells 7 one-off in-app purchases. System Designer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for perli against 4.4 for System Designer. Both are backed by a comparable volume of ratings — 19 and 17 respectively. Written reviews are what separate them: 84% of perli's written reviews are positive against 78% of System Designer's.

perli ships an update every 3 months, System Designer monthly. The most recent releases landed on August 12, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | perli | System Designer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (19 ratings)](https://appshunter.io/ios/app/perli-run-codeautocompletewe/id578116006/reviews)** | [4.4 (17 ratings)](https://appshunter.io/ios/app/system-designer/id1132983280/reviews) |
| Number of ratings | **19** | 17 |
| Positive reviews | **83.9% of reviews** | 77.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 77 MB | 7 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [小文 黄](https://appshunter.io/developer/490328393) | [Erwan Carriou](https://appshunter.io/developer/1102494853) |

## What reviewers say

### perli

[App page](https://appshunter.io/ios/app/perli-run-codeautocompletewe/id578116006)

Learn, run, and share Perl scripts on iOS. Features include code autocompletion, syntax highlighting, and a built-in browser for learning materials. Customize your learning environment and generate QR codes for easy sharing.

**Highlights:** Autocompletion, Auto Indent, Code coloring, Built-in browser, Code templates, File system support, QR code generation

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Password Service | $0.99 | one-time |
| To remove ads | $0.99 | one-time |
| Horizontal screen development | $0.99 | one-time |
| Simple Vedio | $0.99 | one-time |
| Encryption Compression | $0.99 | one-time |
| Text Search | $0.99 | one-time |
| Autocomplete | $0.99 | one-time |


### System Designer

[App page](https://appshunter.io/ios/app/system-designer/id1132983280)

Design complex systems using a low-code platform that leverages UML standards. Generate code skeletons and manage components graphically. Run and test your system with dynamic type checking.

**Highlights:** UML-based system modeling, Code skeleton generation, Graphical component creation, MSON format for model definition, Dynamic type checking, Cross-device synchronization via GitHub

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is perli free?

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

### Is System Designer free?

System Designer is free to download, with no in-app purchases.

### Which has better reviews, perli or System Designer?

perli is rated higher. perli averages 4.5 out of 5 from 19 ratings, while System Designer averages 4.4 from 17 ratings.

### Do perli or System Designer have ads?

Neither perli nor System Designer shows ads.

### Which is updated more often, perli or System Designer?

perli ships an update every 3 months, and System Designer monthly. Most recently, perli was updated on August 12, 2026 and System Designer on September 18, 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.*