# PDF Aide vs Keyda

The clearest difference is device support: Keyda at 2 against PDF Aide's —. PDF Aide's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. PDF Aide sells 2 in-app purchases, starting at $4.99 per month and Keyda sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

PDF Aide ships an update every 3 days, Keyda every 5 days. The most recent releases landed on October 1, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | PDF Aide | Keyda |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-aide-edit-and-convert/id6764265638/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | **Every 3 days** | Every 5 days |
| Monetization | Freemium | — |
| Size | 26 MB | 50 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [KESTREL CYBER PTE. LTD.](https://appshunter.io/developer/1678251940) | [Nikhil Ryan](https://appshunter.io/developer/1866638358) |

## What reviewers say

### PDF Aide

[App page](https://appshunter.io/ios/app/pdf-aide-edit-and-convert/id6764265638)

Streamline your document management with this comprehensive PDF tool. Convert images, Office files, and web pages to PDF, or export PDFs to editable formats. Edit, annotate, merge, split, and secure your documents with ease.

**Highlights:** Convert images, Office files, and web pages to PDF, Export PDFs to editable formats, Annotate and draw on documents, Merge and split PDF files, Compress PDF file size, Password protect sensitive documents

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| monthly membership | $4.99 | per month |
| Annual Membership | $39.99 | per year |


### Keyda

[App page](https://appshunter.io/ios/app/keyda/id6770684594)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lite Keyda — Monthly | $1.99 | per month |
| Pro Keyda — Monthly | $4.99 | per month |
| Pro Keyda — Annual | $29.99 | per year |


## Frequently asked questions

### Is PDF Aide free?

PDF Aide is free to download, with in-app purchases available.

### Is Keyda free?

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

### Which is updated more often, PDF Aide or Keyda?

PDF Aide ships an update every 3 days, and Keyda every 5 days. Most recently, PDF Aide was updated on October 1, 2026 and Keyda on September 25, 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.*