# AWS Data Engineer 2026 vs Query Optimization Concepts

The clearest difference is in-app purchases: Query Optimization Concepts at none against AWS Data Engineer 2026's 1. AWS Data Engineer 2026's advantage is iOS requirement (10.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. AWS Data Engineer 2026 sells 1 one-off in-app purchase. Query Optimization Concepts asks for nothing beyond the download.

## The numbers

| Metric | AWS Data Engineer 2026 | Query Optimization Concepts |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Size | 25 MB | 38 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Trieu Tran](https://appshunter.io/developer/1668827865) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## What reviewers say

### AWS Data Engineer 2026

[App page](https://appshunter.io/ios/app/aws-data-engineer-2026/id6743957003)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock complete App | $7.99 | one-time |


### Query Optimization Concepts

[App page](https://appshunter.io/ios/app/query-optimization-concepts/id6773823412)

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

**In-app purchases:** none


## Frequently asked questions

### Is AWS Data Engineer 2026 free?

AWS Data Engineer 2026 is free to download, with in-app purchases available.

### Is Query Optimization Concepts free?

Query Optimization Concepts is free to download, with no in-app purchases.

### Do AWS Data Engineer 2026 or Query Optimization Concepts have ads?

Neither AWS Data Engineer 2026 nor Query Optimization Concepts 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.*