# FocusFlight vs PDF Shelf

The clearest difference is iOS requirement: PDF Shelf at 15.1 against FocusFlight's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. FocusFlight sells 5 in-app purchases, starting at $3.99 per month and PDF Shelf sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | FocusFlight | PDF Shelf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (9.9K ratings)](https://appshunter.io/ios/app/focusflight-deepfocus-timer/id6648771147/reviews)** | — |
| Number of ratings | **9.9K** | — |
| Positive reviews | 89.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 261 MB | 38 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cement Planet LTD](https://appshunter.io/developer/1763773386) | [Youssef Bouhouch](https://appshunter.io/developer/1896444980) |

## What reviewers say

### FocusFlight

[App page](https://appshunter.io/ios/app/focusflight-deepfocus-timer/id6648771147)

This app transforms focus sessions into immersive flight journeys. Block distractions with an airplane mode feature and track your progress through visualized flight routes and logs. Enhance your concentration with ambient sounds and music.

**Highlights:** Immersive flight experience, App and website blocking, 3D map and flight routes, Flight logs and progress tracking, White noise and focus music, Customizable focus types

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Annually | $18.99 | per year |
| Lifetime | $18.99 | one-time |
| Lifetime | $19.99 | one-time |
| Lifetime | $33.99 | one-time |

**What reviewers like**

- 👍 Great user experience
- 🚀 Fantastic design and functionality
- 💡 Innovative concept for focus
- 👍 Helps users focus effectively

**What reviewers complain about**

- 🔒 Lack of customization options
- 🐛 Issues with changing departure location

**Reported bugs**

- Developer unresponsive to user feedback and inquiries

**Requested features**

- Add more realistic flight simulation elements (e.g., flight paths, altitude, speed)
- Rotate trends page to horizontal layout for better global view
- Allow customization of aircraft types and interface


### PDF Shelf

[App page](https://appshunter.io/ios/app/pdf-shelf-doc-and-file-manager/id6805585067)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDFShelf Pro — Monthly | $2.99 | per month |
| PDFShelf Pro — Yearly | $14.99 | per year |
| Documents Shelf Life time | $49.99 | one-time |


## Frequently asked questions

### Is FocusFlight free?

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

### Is PDF Shelf free?

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

### Do FocusFlight or PDF Shelf have ads?

Neither FocusFlight nor PDF Shelf shows ads.

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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.*