# Optibook vs КОСМЕДЭЛЬ

Optibook and КОСМЕДЭЛЬ are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Optibook ships an update every 3 months, КОСМЕДЭЛЬ every 2 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Optibook | КОСМЕДЭЛЬ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (19 ratings)](https://appshunter.io/ios/app/id1672364747/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 93 MB | 41 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [FLOG, OOO](https://appshunter.io/developer/1464659550) | [MLK OOO](https://appshunter.io/developer/787840921) |

## What reviewers say

### Optibook

[App page](https://appshunter.io/ios/app/optibook/id1491132051)

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

**In-app purchases:** none


### КОСМЕДЭЛЬ

[App page](https://appshunter.io/ios/app/id1672364747)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Optibook free?

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

### Is КОСМЕДЭЛЬ free?

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

### Do Optibook or КОСМЕДЭЛЬ have ads?

Neither Optibook nor КОСМЕДЭЛЬ shows ads.

### Which is updated more often, Optibook or КОСМЕДЭЛЬ?

Optibook ships an update every 3 months, and КОСМЕДЭЛЬ every 2 months. Most recently, Optibook was updated on October 26, 2026 and КОСМЕДЭЛЬ on October 30, 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.*