# quantum error correction vs Probiotics Guide.

The clearest difference is in-app purchases: quantum error correction at none against Probiotics Guide.'s 2. quantum error correction also leads on ads (none vs shown). Probiotics Guide.'s advantage is iOS requirement (13.0 vs 16.0). On price and device support there is nothing between them.

Both are free to download. Probiotics Guide. sells 2 in-app purchases, starting at $1.99 per month. quantum error correction asks for nothing beyond the download.

## The numbers

| Metric | quantum error correction | Probiotics Guide. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 2 weeks |
| Size | 5 MB | 160 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Olga Ivanova](https://appshunter.io/developer/1733570435) |

## What reviewers say

### quantum error correction

[App page](https://appshunter.io/ios/app/quantum-error-correction/id6504707563)

**Features:** macOS Compatibility

**In-app purchases:** none


### Probiotics Guide.

[App page](https://appshunter.io/ios/app/probiotics-guide/id6720753184)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription | $1.99 | per month |
| Sponsorship | $1.99 | one-time |


## Frequently asked questions

### Is quantum error correction free?

quantum error correction is free to download, with no in-app purchases.

### Is Probiotics Guide. free?

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

### Do quantum error correction or Probiotics Guide. have ads?

Probiotics Guide. shows ads; quantum error correction does not.

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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.*