# Doc Fill vs Catnap Focus

The clearest difference is device support: Doc Fill at 3 against Catnap Focus's 1. Doc Fill also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Doc Fill sells 5 in-app purchases, starting at $2.99 per month and Catnap Focus sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Doc Fill ships an update every 4 days, Catnap Focus every 2 days. The most recent releases landed on October 29, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Doc Fill | Catnap Focus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 51 MB | 44 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DGL Factor](https://appshunter.io/developer/6801650956) | [Phuong Bui](https://appshunter.io/developer/6803748590) |

## What reviewers say

### Doc Fill

[App page](https://appshunter.io/ios/app/doc-fill/id6803170101)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Premium Year | $24.99 | per year |
| 100 Credits | $0.99 | one-time |
| 300 Credits | $2.49 | one-time |
| 1000 Credits | $6.99 | one-time |


### Catnap Focus

[App page](https://appshunter.io/ios/app/catnap-focus/id6812435447)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Monthly | $7.99 | per month |
| Yearly | $14.99 | per year |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Doc Fill free?

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

### Is Catnap Focus free?

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

### Do Doc Fill or Catnap Focus have ads?

Neither Doc Fill nor Catnap Focus shows ads.

### Which is updated more often, Doc Fill or Catnap Focus?

Doc Fill ships an update every 4 days, and Catnap Focus every 2 days. Most recently, Doc Fill was updated on October 29, 2026 and Catnap Focus on October 18, 2026.

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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.*