# Доктор Строй vs Prorab

The clearest difference is in-app purchases: Доктор Строй at none against Prorab's 1. Prorab's advantage is update cadence (every 8 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Prorab sells 1 in-app purchase, starting at $4.99 per month. Доктор Строй asks for nothing beyond the download.

Доктор Строй ships an update every 4 months, Prorab every 8 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Доктор Строй | Prorab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 8 days** |
| Size | 87 MB | 15 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Vladimir Lavrenov](https://appshunter.io/developer/1524818079) | [Dilshod Qodirov](https://appshunter.io/developer/1877316470) |

## What reviewers say

### Доктор Строй

[App page](https://appshunter.io/ios/app/id6749073373)

**Features:** macOS Compatibility

**In-app purchases:** none


### Prorab

[App page](https://appshunter.io/ios/app/prorab/id6759191140)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |


## Frequently asked questions

### Is Доктор Строй free?

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

### Is Prorab free?

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

### Do Доктор Строй or Prorab have ads?

Neither Доктор Строй nor Prorab shows ads.

### Which is updated more often, Доктор Строй or Prorab?

Доктор Строй ships an update every 4 months, and Prorab every 8 days. Most recently, Доктор Строй was updated on October 30, 2026 and Prorab on October 28, 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.*