# Буль vs Vairoo

The clearest difference is update cadence: Vairoo at every 5 days against Буль's every 4 weeks. Vairoo also leads on iOS requirement (13.0 vs 15.6). 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.

Буль ships an update every 4 weeks, Vairoo every 5 days. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Буль | Vairoo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 5 days** |
| Size | 44 MB | 34 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Marat Shaimov](https://appshunter.io/developer/1531466745) | [Mikhail Sivkov](https://appshunter.io/developer/1860595402) |

## What reviewers say

### Буль

[App page](https://appshunter.io/ios/app/id6450137962)

**In-app purchases:** none


### Vairoo

[App page](https://appshunter.io/ios/app/vairoo/id6756719073)

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

**In-app purchases:** none


## Frequently asked questions

### Is Буль free?

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

### Is Vairoo free?

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

### Do Буль or Vairoo have ads?

Neither Буль nor Vairoo shows ads.

### Which is updated more often, Буль or Vairoo?

Буль ships an update every 4 weeks, and Vairoo every 5 days. Most recently, Буль was updated on October 1, 2026 and Vairoo on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*