# BookFusion vs Sightlines

The clearest difference is update cadence: Sightlines at every 4 days against BookFusion's every 10 days. BookFusion's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. BookFusion sells 6 in-app purchases, starting at $1.99 per month and Sightlines sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

BookFusion ships an update every 10 days, Sightlines every 4 days. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | BookFusion | Sightlines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (521 ratings)](https://appshunter.io/ios/app/bookfusion/id1141834096/reviews)** | — |
| Number of ratings | **521** | — |
| Positive reviews | 76.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 158 MB | 12 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [BookFusion](https://appshunter.io/developer/1141834095) | [Kyle Foley](https://appshunter.io/developer/1814129029) |

## What reviewers say

### BookFusion

[App page](https://appshunter.io/ios/app/bookfusion/id1141834096)

Manage, read, and organize your entire eBook collection across all devices with cloud synchronization. Customize your reading experience with extensive settings, highlights, and annotations. Supports various formats and offers text-to-speech functionality.

**Highlights:** Cross-platform eBook reader, Cloud synchronization, Organize with virtual bookshelves, Highlights and annotations, Text-to-Speech (TTS), Send to Kindle, Calibre integration

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Casual Monthly | $1.99 | per month |
| Advanced Monthly | $4.99 | per month |
| Power Monthly | $9.99 | per month |
| Casual Yearly | $18.99 | per year |
| Advanced Yearly | $47.99 | per year |
| Power Yearly | $95.99 | per year |

**What reviewers like**

- 🚀 Excellent cross-platform sync
- 👍 Highly customizable reading experience
- 🚀 Seamless Calibre integration
- 👍 Responsive and helpful developers
- 🚀 Smooth reading experience

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 💰 Subscription model may be costly for some
- 🔒 Requires account creation to use
- 🐛 Inconsistent page turn behavior
- 🐛 Issues with PDF and fixed-layout EPUB support

**Reported bugs**

- Highlights and notes not always saving properly
- Reading position sometimes resets unexpectedly
- Widget not functioning as expected
- Occasional crashes and freezes
- Issues with importing certain ebook formats

**Requested features**

- Add page numbers instead of just percentages
- Implement a true dark mode
- Improve PDF viewing and annotation capabilities
- Add support for DJVU format
- Provide an option to purchase a lifetime license


### Sightlines

[App page](https://appshunter.io/ios/app/sightlines-focus-more/id6757869840)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sightlines Pro Monthly | $2.99 | per month |
| Sightlines Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is BookFusion free?

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

### Is Sightlines free?

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

### Do BookFusion or Sightlines have ads?

Neither BookFusion nor Sightlines shows ads.

### Which is updated more often, BookFusion or Sightlines?

BookFusion ships an update every 10 days, and Sightlines every 4 days. Most recently, BookFusion was updated on October 22, 2026 and Sightlines on October 20, 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.*