PDF Signer app vs Cat Keyboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Signer app
Create and fill out forms directly on PDF documents. This tool simplifies the process of collecting and managing information within PDFs.
- Build forms on PDFs
- Fill out collections
- Easy data management
- PDF form creation
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PDF Signer allows building forms on top of a PDF and fill out collections easily.
Cat Keyboard
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.
- One-tap text input
- Save frequently used phrases
- Organize phrases with folders
- Display text on Apple Watch
- Read text aloud on Apple Watch
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Quickly input frequently used text directly from your keyboard or Apple Watch. You can also display text on your Apple Watch or have it read aloud through the speaker. 【Key Features】 ・Easy Text Input Save frequently used sentences and phrases to input them with just one tap from your keyboard or Apple Watch. ・Organize with Folders Keep your phrases tidy by organizing them into folders, making it easy to find exactly what you need even as your collection grows. ・Apple Watch Integration View text directly on your Apple Watch or play it back as audio through the speaker. Terms of Use: https://wordouen.sakura.ne.jp/KeyHolderKeyboard/terms.html Privacy Policy: https://wordouen.sakura.ne.jp/KeyHolderKeyboard/privacy.html
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | PDF Signer app | Cat Keyboard |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.7 (10 ratings) |
| Positive reviews | — | 83.3% of reviews |
| Number of ratings | 3 | 10 — better |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 12.2 — better | 26.0 |
| Further details — not scored | ||
| Size | 1 MB | 106 MB |
| Age rating | 4+ | 12+ |
| Developer | farmerswife | kimihiro kubota |
Customer experience
PDF Signer app
Cat Keyboard
In-app purchases
PDF Signer app
No in-app purchases
Cat Keyboard
- Premium (1 Month)7 Days trial$2.991 Month
- Premium (3 Month)7 Days trial$7.993 Months
- Premium (12 Month)7 Days trial$19.991 Year
- Cat Pro$24.99
Questions
Is PDF Signer app free?
Is Cat Keyboard free?
Which has better reviews, PDF Signer app or Cat Keyboard?
Do PDF Signer app or Cat Keyboard have ads?
Which is updated more often, PDF Signer app or Cat Keyboard?
Other comparisons
