# SQL Kurs & Zertifikat vs Perfboard Lab

The clearest difference is in-app purchases: SQL Kurs & Zertifikat at none against Perfboard Lab's 1. SQL Kurs & Zertifikat also leads on iOS requirement (13.0 vs 18.0). Perfboard Lab's advantage is update cadence (every 9 days vs every 18 months). On price, ads and device support there is nothing between them.

Both are free to download. Perfboard Lab sells 1 in-app purchase, starting at $0.99 per 7 days. SQL Kurs & Zertifikat asks for nothing beyond the download.

SQL Kurs & Zertifikat ships an update every 18 months, Perfboard Lab every 9 days. Both last shipped on October 29, 2026.

## The numbers

| Metric | SQL Kurs & Zertifikat | Perfboard Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sql-kurs-and-zertifikat/id1088274370/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 66 MB | 35 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Eberhard Heuel](https://appshunter.io/developer/881793184) | [Pascal Schroeer](https://appshunter.io/developer/6818318951) |

## What reviewers say

### SQL Kurs & Zertifikat

[App page](https://appshunter.io/ios/app/sql-kurs-and-zertifikat/id1088274370)

Learn SQL from the basics to advanced dialects like MySQL and Oracle. This app is ideal for beginners and professionals seeking practical database skills. Earn a university certificate upon passing the online or campus exam.

**Highlights:** Learn SQL fundamentals, Practice with real-world examples, Study MySQL and Oracle dialects, Online or campus exam, University certificate awarded, ECTS credits for students

**Features:** macOS Compatibility

**In-app purchases:** none


### Perfboard Lab

[App page](https://appshunter.io/ios/app/perfboard-lab/id6818318947)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Perfboard Lab Pro | $0.99 | per 7 days |


## Frequently asked questions

### Is SQL Kurs & Zertifikat free?

SQL Kurs & Zertifikat is free to download, with no in-app purchases.

### Is Perfboard Lab free?

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

### Do SQL Kurs & Zertifikat or Perfboard Lab have ads?

Neither SQL Kurs & Zertifikat nor Perfboard Lab shows ads.

### Which is updated more often, SQL Kurs & Zertifikat or Perfboard Lab?

SQL Kurs & Zertifikat ships an update every 18 months, and Perfboard Lab every 9 days. Most recently, SQL Kurs & Zertifikat was updated on October 29, 2026 and Perfboard Lab on October 29, 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.*