# SOLID Architecture vs AMB Focus

The clearest difference is in-app purchases: AMB Focus at none against SOLID Architecture's 3. AMB Focus also leads on update cadence (every 4 days vs every 9 days). SOLID Architecture's advantage is iOS requirement (13.0 vs 15.1). 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. AMB Focus asks for nothing beyond the download.

SOLID Architecture ships an update every 9 days, AMB Focus every 4 days. The most recent releases landed on September 16, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | SOLID Architecture | AMB Focus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 94 MB | 125 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Airton Siqueira de Freitas](https://appshunter.io/developer/1809776051) | [Manisha .](https://appshunter.io/developer/6807289174) |

## What reviewers say

### 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 |


### AMB Focus

[App page](https://appshunter.io/ios/app/amb-focus/id6778294172)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is SOLID Architecture free?

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

### Is AMB Focus free?

AMB Focus is free to download, with no in-app purchases.

### Do SOLID Architecture or AMB Focus have ads?

Neither SOLID Architecture nor AMB Focus shows ads.

### Which is updated more often, SOLID Architecture or AMB Focus?

SOLID Architecture ships an update every 9 days, and AMB Focus every 4 days. Most recently, SOLID Architecture was updated on September 16, 2026 and AMB Focus on September 10, 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.*