# Design Patterns Illustrated vs SOLID Architecture

The clearest difference is in-app purchases: Design Patterns Illustrated at none against SOLID Architecture's 3. SOLID Architecture's advantage is iOS requirement (13.0 vs 16.6). On price, ads and device support there is nothing between them.

Both are free to download. SOLID Architecture sells 3 one-off in-app purchases. Design Patterns Illustrated asks for nothing beyond the download.

## The numbers

| Metric | Design Patterns Illustrated | SOLID Architecture |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 9 days |
| Size | 8 MB | 94 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Apps Foundry Inc.](https://appshunter.io/developer/1772141640) | [Airton Siqueira de Freitas](https://appshunter.io/developer/1809776051) |

## What reviewers say

### Design Patterns Illustrated

[App page](https://appshunter.io/ios/app/design-patterns-illustrated/id6736484312)

**Features:** macOS Compatibility

**In-app purchases:** none


### SOLID Architecture

[App page](https://appshunter.io/ios/app/solid-architecture/id6755614891)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CERTIFICATE OF COMPLETION | $2.99 | one-time |
| Premium access | $4.99 | one-time |
| FULL PASS ALL APPS | $17.99 | one-time |


## Frequently asked questions

### Is Design Patterns Illustrated free?

Design Patterns Illustrated is free to download, with no in-app purchases.

### Is SOLID Architecture free?

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

### Do Design Patterns Illustrated or SOLID Architecture have ads?

Neither Design Patterns Illustrated nor SOLID Architecture shows ads.

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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.*