# БИГ Строй vs Double

The clearest difference is iOS requirement: Double at 13.0 against БИГ Строй's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on August 13, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | БИГ Строй | Double |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 80 MB | 55 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anastasiia Doronkina](https://appshunter.io/developer/1667113251) | [Nurmukhamed Myktybek uulu](https://appshunter.io/developer/1599472646) |

## What reviewers say

### БИГ Строй

[App page](https://appshunter.io/ios/app/id6744873051)

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

**In-app purchases:** none


### Double

[App page](https://appshunter.io/ios/app/double/id6757322114)

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

**In-app purchases:** none


## Frequently asked questions

### Is БИГ Строй free?

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

### Is Double free?

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

### Do БИГ Строй or Double have ads?

Neither БИГ Строй nor Double shows ads.

### Which is updated more often, БИГ Строй or Double?

БИГ Строй ships an update every 2 weeks, and Double every 2 weeks. Most recently, БИГ Строй was updated on August 13, 2026 and Double on September 17, 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.*