# Proxy QR vs Строительный калькулятор SO

The clearest difference is in-app purchases: Строительный калькулятор SO at none against Proxy QR's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Proxy QR sells 3 in-app purchases, starting at $0.99 per month. Строительный калькулятор SO asks for nothing beyond the download.

## The numbers

| Metric | Proxy QR | Строительный калькулятор SO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Monthly |
| Size | 41 MB | 23 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STRICKLAND SOFTWARE ENGINEERING CORPORATION](https://appshunter.io/developer/1638580402) | [Maksim Maltsev](https://appshunter.io/developer/1872080568) |

## What reviewers say

### Proxy QR

[App page](https://appshunter.io/ios/app/proxy-qr/id6466513845)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Project assistance | $0.99 | per month |
| One-time assistance to the app | $0.99 | one-time |
| On the development of the app | $9.99 | one-time |


### Строительный калькулятор SO

[App page](https://appshunter.io/ios/app/so/id6758302848)

**In-app purchases:** none


## Frequently asked questions

### Is Proxy QR free?

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

### Is Строительный калькулятор SO free?

Строительный калькулятор SO is free to download, with no in-app purchases.

### Do Proxy QR or Строительный калькулятор SO have ads?

Neither Proxy QR nor Строительный калькулятор SO shows ads.

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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.*