# Source J vs Calitre

The clearest difference is device support: Source J at 3 against Calitre's 1. Source J also leads on iOS requirement (15.0 vs 17.6). On price, ads and in-app purchases there is nothing between them.

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

## The numbers

| Metric | Source J | Calitre |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Size | 395 MB | 83 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Marco Boccara](https://appshunter.io/developer/1858543385) | [Filip Smalec](https://appshunter.io/developer/1891744430) |

## What reviewers say

### Source J

[App page](https://appshunter.io/ios/app/source-j/id6762402275)

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

**In-app purchases:** none


### Calitre

[App page](https://appshunter.io/ios/app/calitre/id6773376233)

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

**In-app purchases:** none


## Frequently asked questions

### Is Source J free?

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

### Is Calitre free?

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

### Do Source J or Calitre have ads?

Neither Source J nor Calitre 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.*