# QuantumKamil vs Pius X Catechism

The clearest difference is in-app purchases: Pius X Catechism at none against QuantumKamil's 4. QuantumKamil's advantage is iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. QuantumKamil sells 4 one-off in-app purchases. Pius X Catechism asks for nothing beyond the download.

## The numbers

| Metric | QuantumKamil | Pius X Catechism |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Size | 6 MB | 280 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Paride Di Lazzaro](https://appshunter.io/developer/6787651798) | [Matthew McCarty](https://appshunter.io/developer/1676579862) |

## What reviewers say

### QuantumKamil

[App page](https://appshunter.io/ios/app/quantumkamil/id6794596980)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small tip | $0.99 | one-time |
| Medium tip | $2.99 | one-time |
| Large tip | $3.99 | one-time |
| Extra tip | $8.99 | one-time |


### Pius X Catechism

[App page](https://appshunter.io/ios/app/pius-x-catechism/id6811518069)

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

**In-app purchases:** none


## Frequently asked questions

### Is QuantumKamil free?

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

### Is Pius X Catechism free?

Pius X Catechism is free to download, with no in-app purchases.

### Do QuantumKamil or Pius X Catechism have ads?

Neither QuantumKamil nor Pius X Catechism 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.*