# Pdf Sidekick vs Lonely PDF

The clearest difference is update cadence: Pdf Sidekick at every 5 days against Lonely PDF's fortnightly. Pdf Sidekick also leads on iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pdf Sidekick ships an update every 5 days, Lonely PDF fortnightly. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Pdf Sidekick | Lonely PDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Fortnightly |
| Size | 24 MB | 17 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [PIECES OF WOOD CO., LIMITED](https://appshunter.io/developer/1681041421) | [RED STONE NETWORK TECHNOLOGY LIMITED](https://appshunter.io/developer/1747887233) |

## What reviewers say

### Pdf Sidekick

[App page](https://appshunter.io/ios/app/pdf-sidekick/id6553968537)

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

**In-app purchases:** none


### Lonely PDF

[App page](https://appshunter.io/ios/app/lonely-pdf/id6808544290)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pdf Sidekick free?

Pdf Sidekick is free to download, with no in-app purchases.

### Is Lonely PDF free?

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

### Do Pdf Sidekick or Lonely PDF have ads?

Neither Pdf Sidekick nor Lonely PDF shows ads.

### Which is updated more often, Pdf Sidekick or Lonely PDF?

Pdf Sidekick ships an update every 5 days, and Lonely PDF fortnightly. Most recently, Pdf Sidekick was updated on November 10, 2026 and Lonely PDF on October 31, 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.*