# 1551 для керівників vs Chronika

The clearest difference is update cadence: Chronika at every 6 weeks against 1551 для керівників's every 5 months. 1551 для керівників's advantage is iOS requirement (15.6 vs 18.0). 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.

1551 для керівників ships an update every 5 months, Chronika every 6 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 1551 для керівників | Chronika |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Size | 40 MB | 29 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GOLOVNYI INFORMATSIINO-OBCHYSLIUVALNYI TSENTR, KP](https://appshunter.io/developer/1455948345) | [Leonid Kaliuzhnyi](https://appshunter.io/developer/1823670997) |

## What reviewers say

### 1551 для керівників

[App page](https://appshunter.io/ios/app/1551/id1536001789)

**In-app purchases:** none


### Chronika

[App page](https://appshunter.io/ios/app/chronika/id6754911944)

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

**In-app purchases:** none


## Frequently asked questions

### Is 1551 для керівників free?

1551 для керівників is free to download, with no in-app purchases.

### Is Chronika free?

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

### Do 1551 для керівників or Chronika have ads?

Neither 1551 для керівників nor Chronika shows ads.

### Which is updated more often, 1551 для керівників or Chronika?

1551 для керівників ships an update every 5 months, and Chronika every 6 weeks. Most recently, 1551 для керівників was updated on November 7, 2026 and Chronika on November 5, 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.*