# 13 vs Буквук

The clearest difference is in-app purchases: Буквук at none against 13's 2. Буквук also leads on update cadence (every 3 weeks vs every 3 months) and device support (3 vs 1). 13's advantage is iOS requirement (5.1.1 vs 15.0). On price and ads there is nothing between them.

Both are free to download. 13 sells 2 one-off in-app purchases. Буквук asks for nothing beyond the download.

13 ships an update every 3 months, Буквук every 3 weeks. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 13 | Буквук |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/13/id526971511/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 142 MB | 45 MB |
| Requires iOS | **5.1.1** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tatiana Churanova](https://appshunter.io/developer/456152397) | [URSACORP, LLC](https://appshunter.io/developer/1822486630) |

## What reviewers say

### 13

[App page](https://appshunter.io/ios/app/13/id526971511)

A Halloween-themed shape puzzle game designed for young children to learn counting through interactive play. It features intuitive puzzles, animated toys, and mini-games to keep kids engaged while practicing one-to-one correspondence.

**Highlights:** Halloween-themed puzzles, Counting practice with 1-to-1 correspondence, Intuitive shape matching, Animated toys upon completion, Two mini-games: Find the number and Memory cards, Engaging and fun learning experience

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| More Languages | $0.99 | one-time |
| Full Version | $1.99 | one-time |


### Буквук

[App page](https://appshunter.io/ios/app/id6803251564)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


## Frequently asked questions

### Is 13 free?

13 is free to download, with in-app purchases available.

### Is Буквук free?

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

### Do 13 or Буквук have ads?

Neither 13 nor Буквук shows ads.

### Which is updated more often, 13 or Буквук?

13 ships an update every 3 months, and Буквук every 3 weeks. Most recently, 13 was updated on November 1, 2026 and Буквук 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.*