# PDF Signer app vs Cat Keyboard

The clearest difference is in-app purchases: PDF Signer app at none against Cat Keyboard's 4. PDF Signer app also leads on rating (5.0 vs 4.7) and iOS requirement (12.2 vs 26.0). Cat Keyboard's advantage is update cadence (fortnightly vs every 3 months) and ratings volume (10 vs 3). On price, ads and device support there is nothing between them.

Both are free to download. Cat Keyboard sells 4 in-app purchases, starting at $2.99 per month. PDF Signer app asks for nothing beyond the download.

PDF Signer app holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 10 respectively.

PDF Signer app ships an update every 3 months, Cat Keyboard fortnightly. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PDF Signer app | Cat Keyboard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pdf-signer-app/id1293669127/reviews)** | [4.7 (10 ratings)](https://appshunter.io/ios/app/cat-keyboard-easy-paste/id6477843068/reviews) |
| Number of ratings | 3 | **10** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | **Free** | Freemium |
| Size | 1 MB | 106 MB |
| Requires iOS | **12.2** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [farmerswife](https://appshunter.io/developer/571048737) | [kimihiro kubota](https://appshunter.io/developer/500031798) |

## What reviewers say

### PDF Signer app

[App page](https://appshunter.io/ios/app/pdf-signer-app/id1293669127)

Create and fill out forms directly on PDF documents. This tool simplifies the process of collecting and managing information within PDFs.

**Highlights:** Build forms on PDFs, Fill out collections, Easy data management, PDF form creation

**In-app purchases:** none


### Cat Keyboard

[App page](https://appshunter.io/ios/app/cat-keyboard-easy-paste/id6477843068)

This app allows you to quickly input saved text snippets from your iPhone keyboard or Apple Watch. You can also display or speak text aloud on your Apple Watch, keeping your phrases organized in folders.

**Highlights:** One-tap text input, Save frequently used phrases, Organize phrases with folders, Display text on Apple Watch, Read text aloud on Apple Watch

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (1 Month) | $2.99 | per month |
| Premium (3 Month) | $7.99 | per 3 months |
| Premium (12 Month) | $19.99 | per year |
| Cat Pro | $24.99 | one-time |


## Frequently asked questions

### Is PDF Signer app free?

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

### Is Cat Keyboard free?

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

### Which has better reviews, PDF Signer app or Cat Keyboard?

PDF Signer app is rated higher. PDF Signer app averages 5.0 out of 5 from 3 ratings, while Cat Keyboard averages 4.7 from 10 ratings.

### Do PDF Signer app or Cat Keyboard have ads?

Neither PDF Signer app nor Cat Keyboard shows ads.

### Which is updated more often, PDF Signer app or Cat Keyboard?

PDF Signer app ships an update every 3 months, and Cat Keyboard fortnightly. Most recently, PDF Signer app was updated on October 18, 2026 and Cat Keyboard on October 24, 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.*