# PDF File Protector vs PDF Guru Anki

The clearest difference is price: PDF Guru Anki at Free against PDF File Protector's $19.99. PDF Guru Anki also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (14.0 vs 16.6). On ads, in-app purchases and device support there is nothing between them.

PDF Guru Anki is free to download; PDF File Protector costs $19.99 up front. PDF File Protector sells 1 one-off in-app purchase and PDF Guru Anki sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

PDF File Protector ships an update every 2 months, PDF Guru Anki every 3 weeks. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | PDF File Protector | PDF Guru Anki |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | — | **[4.7 (14 ratings)](https://appshunter.io/ios/app/pdf-guru-anki/id6740508123/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | — | 93.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 240 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [乐祥 胡](https://appshunter.io/developer/1572365721) | [名杰 王](https://appshunter.io/developer/1790215066) |

## What reviewers say

### PDF File Protector

[App page](https://appshunter.io/ios/app/pdf-file-protector/id6738285744)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| pdf签名内购 | $9.99 | one-time |


### PDF Guru Anki

[App page](https://appshunter.io/ios/app/pdf-guru-anki/id6740508123)

This app is a multi-functional office and learning assistant. It offers tools for PDF manipulation, efficient Anki card creation from various document types, Anki synchronization, and video note-taking with timestamp integration for a streamlined study process.

**Highlights:** PDF merging, splitting, rotating, encrypting, and converting, Anki card creation from PDFs, Word, Xmind, Markdown, Excel, and WeChat Reading, Batch creation of cloze, Q&A, and multiple-choice Anki cards, Local area network (LAN) sync server for Anki, Video note-taking with timestamp and screenshot insertion, Timestamp-based navigation for video notes, Seamless import of notes into Anki

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly membership | $0.99 | per month |
| Annual membership | $6.99 | per year |
| Lifetime Membership | $14.99 | one-time |


## Frequently asked questions

### Is PDF File Protector free?

PDF File Protector costs $19.99, and also offers in-app purchases.

### Is PDF Guru Anki free?

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

### Do PDF File Protector or PDF Guru Anki have ads?

Neither PDF File Protector nor PDF Guru Anki shows ads.

### Which is updated more often, PDF File Protector or PDF Guru Anki?

PDF File Protector ships an update every 2 months, and PDF Guru Anki every 3 weeks. Most recently, PDF File Protector was updated on October 12, 2026 and PDF Guru Anki on October 13, 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.*