# Crewservices. Дельта тест 3.0 vs Power System Lab

The clearest difference is update cadence: Power System Lab at every 3 days against Crewservices. Дельта тест 3.0's every 5 weeks. Crewservices. Дельта тест 3.0's advantage is iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Crewservices. Дельта тест 3.0 ships an update every 5 weeks, Power System Lab every 3 days. The most recent releases landed on September 24, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Crewservices. Дельта тест 3.0 | Power System Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (3 ratings)](https://appshunter.io/ios/app/power-system-lab/id6814270423/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Size | 74 MB | 256 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Alexey Seleznev](https://appshunter.io/developer/1211190063) | [Serhii Zai](https://appshunter.io/developer/6814270425) |

## What reviewers say

### Crewservices. Дельта тест 3.0

[App page](https://appshunter.io/ios/app/crewservices-30/id1211190064)

**Features:** macOS Compatibility

**In-app purchases:** none


### Power System Lab

[App page](https://appshunter.io/ios/app/power-system-lab/id6814270423)

**In-app purchases:** none


## Frequently asked questions

### Is Crewservices. Дельта тест 3.0 free?

Crewservices. Дельта тест 3.0 is free to download, with no in-app purchases.

### Is Power System Lab free?

Power System Lab is free to download, with no in-app purchases.

### Do Crewservices. Дельта тест 3.0 or Power System Lab have ads?

Neither Crewservices. Дельта тест 3.0 nor Power System Lab shows ads.

### Which is updated more often, Crewservices. Дельта тест 3.0 or Power System Lab?

Crewservices. Дельта тест 3.0 ships an update every 5 weeks, and Power System Lab every 3 days. Most recently, Crewservices. Дельта тест 3.0 was updated on September 24, 2026 and Power System Lab on October 17, 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.*