# Дельта тест 3.0 Ответы 2026 vs Power System Lab

The clearest difference is in-app purchases: Power System Lab at none against Дельта тест 3.0 Ответы 2026's 10. Power System Lab also leads on update cadence (every 3 days vs every 2 months) and review sentiment (67% vs 44%). Дельта тест 3.0 Ответы 2026's advantage is rating (4.2 vs 4.0) and iOS requirement (12.4 vs 17.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Дельта тест 3.0 Ответы 2026 sells 10 one-off in-app purchases. Power System Lab asks for nothing beyond the download.

Дельта тест 3.0 Ответы 2026 holds the better App Store score, 4.2 against 4.0. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews complicate that: 44% of Дельта тест 3.0 Ответы 2026's written reviews are positive against 67% of Power System Lab's, so the app with the better star average is not the one people write more warmly about.

Дельта тест 3.0 Ответы 2026 ships an update every 2 months, Power System Lab every 3 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Дельта тест 3.0 Ответы 2026 | Power System Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/30-2026/id1630529828/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/power-system-lab/id6814270423/reviews) |
| Number of ratings | **5** | 3 |
| Positive reviews | 44.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | **Free** | Subscription |
| Size | 75 MB | 256 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Alisa Potapova](https://appshunter.io/developer/666897984) | [Serhii Zai](https://appshunter.io/developer/6814270425) |

## What reviewers say

### Дельта тест 3.0 Ответы 2026

[App page](https://appshunter.io/ios/app/30-2026/id1630529828)

Prepare for maritime certification exams with a comprehensive study tool. Access practice questions, detailed explanations, and performance tracking. Customize your learning experience with various test modes and settings.

**Highlights:** Study mode with answers and comments, Exam mode with random question sets, Marathon mode for comprehensive testing, Error tracking and review, Favorites for saving questions, Detailed statistics and progress tracking, Search functionality for questions

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Капитан | $4.99 | one-time |
| Старший помощник капитана | $4.99 | one-time |
| Вахтенный помощник капитана | $4.99 | one-time |
| Старший механик | $4.99 | one-time |
| Второй механик | $4.99 | one-time |
| Вахтенный механик | $4.99 | one-time |
| Судомеханик | $4.99 | one-time |
| Электромеханик | $4.99 | one-time |
| Вахтенный матрос | $4.99 | one-time |
| Матрос 1-го класса | $4.99 | one-time |


### Power System Lab

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

This app offers a comprehensive learning experience for marine electrical systems through interactive simulations, practical tools, and engaging games. It allows users to explore virtual environments, perform diagnostics, and test their knowledge with various challenges. The app also includes useful calculation tools and customization options.

**Highlights:** Interactive marine electrical simulations, Virtual instruments and diagnostic tools, Four educational games, Electrical calculation tools, Customizable learning environment, Progress tracking and account sync

**In-app purchases:** none


## Frequently asked questions

### Is Дельта тест 3.0 Ответы 2026 free?

Дельта тест 3.0 Ответы 2026 is free to download, with in-app purchases available.

### Is Power System Lab free?

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

### Which has better reviews, Дельта тест 3.0 Ответы 2026 or Power System Lab?

Дельта тест 3.0 Ответы 2026 is rated higher. Дельта тест 3.0 Ответы 2026 averages 4.2 out of 5 from 5 ratings, while Power System Lab averages 4.0 from 3 ratings.

### Do Дельта тест 3.0 Ответы 2026 or Power System Lab have ads?

Neither Дельта тест 3.0 Ответы 2026 nor Power System Lab shows ads.

### Which is updated more often, Дельта тест 3.0 Ответы 2026 or Power System Lab?

Дельта тест 3.0 Ответы 2026 ships an update every 2 months, and Power System Lab every 3 days. Most recently, Дельта тест 3.0 Ответы 2026 was updated on October 31, 2026 and Power System 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.*