# TechCert Pro vs SOLID Architecture

The clearest difference is iOS requirement: SOLID Architecture at 13.0 against TechCert Pro's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. TechCert Pro sells 2 in-app purchases, starting at $4.99 per month and SOLID Architecture sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

TechCert Pro ships an update every 5 days, SOLID Architecture every 9 days. The most recent releases landed on September 9, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | TechCert Pro | SOLID Architecture |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 9 days |
| Size | 47 MB | 94 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jeffery Galen Reed](https://appshunter.io/developer/1819964083) | [Airton Siqueira de Freitas](https://appshunter.io/developer/1809776051) |

## What reviewers say

### TechCert Pro

[App page](https://appshunter.io/ios/app/techcert-pro-it-exam-prep/id6753570799)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tech Cert Pro Monthly | $4.99 | per month |
| Tech Cert Pro Yearly | $49.99 | per year |


### 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 TechCert Pro free?

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

### Is SOLID Architecture free?

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

### Do TechCert Pro or SOLID Architecture have ads?

Neither TechCert Pro nor SOLID Architecture shows ads.

### Which is updated more often, TechCert Pro or SOLID Architecture?

TechCert Pro ships an update every 5 days, and SOLID Architecture every 9 days. Most recently, TechCert Pro was updated on September 9, 2026 and SOLID Architecture on September 16, 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.*