# SOLID Architecture vs Docker Certified Associate DCA

SOLID Architecture and Docker Certified Associate DCA are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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. SOLID Architecture sells 3 one-off in-app purchases and Docker Certified Associate DCA sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

SOLID Architecture ships an update every 9 days, Docker Certified Associate DCA every 3 weeks. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | SOLID Architecture | Docker Certified Associate DCA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Size | 102 MB | 45 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | +4 | 4+ |
| Developer | [Airton Siqueira de Freitas](https://appshunter.io/developer/1809776051) | [EXAMCERT PTY LTD](https://appshunter.io/developer/1830664214) |

## 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 |


### Docker Certified Associate DCA

[App page](https://appshunter.io/ios/app/docker-certified-associate-dca/id6757731496)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 200 AI Credits | $1.99 | one-time |
| Unlock Premium | $5.99 | one-time |


## Frequently asked questions

### Is SOLID Architecture free?

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

### Is Docker Certified Associate DCA free?

Docker Certified Associate DCA is free to download, with in-app purchases available.

### Do SOLID Architecture or Docker Certified Associate DCA have ads?

Neither SOLID Architecture nor Docker Certified Associate DCA shows ads.

### Which is updated more often, SOLID Architecture or Docker Certified Associate DCA?

SOLID Architecture ships an update every 9 days, and Docker Certified Associate DCA every 3 weeks. Most recently, SOLID Architecture was updated on October 30, 2026 and Docker Certified Associate DCA 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.*