# Main Arc vs Cat's Study

The clearest difference is in-app purchases: Cat's Study at none against Main Arc's 3. Main Arc's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Main Arc sells 3 in-app purchases, starting at $3.99 per 7 days. Cat's Study asks for nothing beyond the download.

## The numbers

| Metric | Main Arc | Cat's Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | — |
| Size | 10 MB | 140 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Denys Khomenko](https://appshunter.io/developer/6773156392) | [Lo-Fi Labs Inc.](https://appshunter.io/developer/6796905768) |

## What reviewers say

### Main Arc

[App page](https://appshunter.io/ios/app/main-arc-winter-arc-tracker/id6806285592)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HabitMint Pro Weekly | $3.99 | per 7 days |
| HabitMint Pro Yearly | $24.99 | per year |
| HabitMint Pro Lifetime | $49.99 | one-time |


### Cat's Study

[App page](https://appshunter.io/ios/app/cats-study-focus-timer/id6816829300)

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

**In-app purchases:** none


## Frequently asked questions

### Is Main Arc free?

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

### Is Cat's Study free?

Cat's Study is free to download, with no in-app purchases.

### Do Main Arc or Cat's Study have ads?

Cat's Study shows ads; Main Arc does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*