# Промышленная безопасность Б9.3 vs Промышленная безопасность А1 .

The clearest difference is price: Промышленная безопасность Б9.3 at $1.99 against Промышленная безопасность А1 .'s $2.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Промышленная безопасность Б9.3 costs $1.99 and Промышленная безопасность А1 . $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Промышленная безопасность Б9.3 ships an update every 2 months, Промышленная безопасность А1 . every 4 months. The most recent releases landed on September 21, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Промышленная безопасность Б9.3 | Промышленная безопасность А1 . |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | — | Paid |
| Size | 14 MB | 17 MB |
| Requires iOS | **12.0** | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Andrey Andreyev](https://appshunter.io/developer/1418253369) | [Alisa Potapova](https://appshunter.io/developer/666897984) |

## What reviewers say

### Промышленная безопасность Б9.3

[App page](https://appshunter.io/ios/app/93/id1523552846)

**Features:** macOS Compatibility

**In-app purchases:** none


### Промышленная безопасность А1 .

[App page](https://appshunter.io/ios/app/1/id1577373433)

Prepare for the "A.1 Fundamentals of Industrial Safety" certification exam with this app. It offers study modes, practice tests, and error analysis based on official Rostekhnadzor questions updated for 2026.

**Highlights:** Study mode with answers and comments, Exam simulation with random questions, Marathon mode for full or partial testing, Error tracking and review, Favorite questions, Detailed statistics, Search functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Промышленная безопасность Б9.3 free?

Промышленная безопасность Б9.3 costs $1.99, with no in-app purchases.

### Is Промышленная безопасность А1 . free?

Промышленная безопасность А1 . costs $2.99, with no in-app purchases.

### Do Промышленная безопасность Б9.3 or Промышленная безопасность А1 . have ads?

Neither Промышленная безопасность Б9.3 nor Промышленная безопасность А1 . shows ads.

### Which is updated more often, Промышленная безопасность Б9.3 or Промышленная безопасность А1 .?

Промышленная безопасность Б9.3 ships an update every 2 months, and Промышленная безопасность А1 . every 4 months. Most recently, Промышленная безопасность Б9.3 was updated on September 21, 2026 and Промышленная безопасность А1 . on September 12, 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.*