# Core Extraction vs Промышленная безопасность а.1

The clearest difference is price: Core Extraction at Free against Промышленная безопасность а.1's $2.99. Core Extraction also leads on iOS requirement (9.0 vs 13.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Core Extraction is free to download; Промышленная безопасность а.1 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Core Extraction ships an update every 3 weeks, Промышленная безопасность а.1 every 5 weeks. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Core Extraction | Промышленная безопасность а.1 |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/1/id1522309294/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 65.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | — | Paid |
| Size | 58 MB | 6 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Natalia Shelyago](https://appshunter.io/developer/1618907003) | [Andrey Andreyev](https://appshunter.io/developer/1418253369) |

## What reviewers say

### Core Extraction

[App page](https://appshunter.io/ios/app/core-extraction/id1480749191)

**Features:** macOS Compatibility

**In-app purchases:** none


### Промышленная безопасность а.1

[App page](https://appshunter.io/ios/app/1/id1522309294)

Prepare for industrial safety certification exams with up-to-date tests and answers. This app offers offline access, quick search, and multiple preparation modes to help professionals get ready for Rostekhnadzor аттестации.

**Highlights:** Up-to-date tests with answers, Built-in search functionality, Multiple preparation modes, Links to regulatory documents, Offline operation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Core Extraction free?

Core Extraction is free to download, with no in-app purchases.

### Is Промышленная безопасность а.1 free?

Промышленная безопасность а.1 costs $2.99, with no in-app purchases.

### Do Core Extraction or Промышленная безопасность а.1 have ads?

Neither Core Extraction nor Промышленная безопасность а.1 shows ads.

### Which is updated more often, Core Extraction or Промышленная безопасность а.1?

Core Extraction ships an update every 3 weeks, and Промышленная безопасность а.1 every 5 weeks. Most recently, Core Extraction was updated on September 18, 2026 and Промышленная безопасность а.1 on September 21, 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.*