# D vs Мастер Смен

The clearest difference is update cadence: Мастер Смен at every 6 weeks against D's every 11 months. Мастер Смен also leads on device support. On price, in-app purchases and iOS requirement there is nothing between them.

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

D ships an update every 11 months, Мастер Смен every 6 weeks. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | D | Мастер Смен |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 11 months | **Every 6 weeks** |
| Size | 71 MB | 42 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Devart.kz](https://appshunter.io/developer/1652833039) | [ООО Вектрум](https://appshunter.io/developer/1630761085) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-one/id6447796138)

**In-app purchases:** none


### Мастер Смен

[App page](https://appshunter.io/ios/app/id6461770147)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is D free?

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

### Is Мастер Смен free?

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

### Which is updated more often, D or Мастер Смен?

D ships an update every 11 months, and Мастер Смен every 6 weeks. Most recently, D was updated on October 13, 2026 and Мастер Смен on October 10, 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.*