# EXTENSION.app vs ReadTool

The clearest difference is in-app purchases: ReadTool at none against EXTENSION.app's 4. ReadTool also leads on iOS requirement (13.0 vs 26.0). EXTENSION.app's advantage is update cadence (every 5 weeks vs every 24 months) and device support (6 vs 2). On price and ads there is nothing between them.

Both are free to download. EXTENSION.app sells 4 in-app purchases, starting at $0.99 per month. ReadTool asks for nothing beyond the download.

EXTENSION.app ships an update every 5 weeks, ReadTool every 24 months. The most recent releases landed on September 28, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | EXTENSION.app | ReadTool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (4.9K ratings)](https://appshunter.io/ios/app/extensionapp/id1533525753/reviews)** | — |
| Number of ratings | **4.9K** | — |
| Positive reviews | 77.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 24 months |
| Monetization | Free with in-app purchases | — |
| Size | 143 MB | 19 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | **iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [X.app](https://appshunter.io/developer/1397532342) | [FAMEINK PTE. LTD.](https://appshunter.io/developer/1746028804) |

## What reviewers say

### EXTENSION.app

[App page](https://appshunter.io/ios/app/extensionapp/id1533525753)

This app enhances video playback on iOS devices, enabling Picture-in-Picture mode for supported websites and apps. It allows for simultaneous playback of multiple videos, background audio, and provides extensive sharing and browser extension capabilities.

**Highlights:** Picture-in-Picture video mode, Simultaneous video playback, Background audio playback, Share extensions for videos, Safari browser extensions, iMessage extension for videos, Customizable shortcuts

**Features:** Safari Extension, Family Sharing, Apple Watch app, iMessage stickers

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EXTENSION+ Monthly | $0.99 | per month |
| EXTENSION+ Monthly for Family | $1.99 | per month |
| EXTENSION+ Yearly | $9.99 | per year |
| EXTENSION+ Yearly for Family | $19.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Works as described
- 💡 Useful for multitasking
- 🔒 No data collection
- 👍 Simple and straightforward

**What reviewers complain about**

- 🐛 Occasional crashes or freezes
- 🔋 Battery drain issues
- 🚫 Compatibility problems with some apps
- 💤 Automatic closing of the window after video ends

**Reported bugs**

- Picture-in-picture mode not working consistently
- Age-restricted videos unable to be viewed
- Playlist shuffling not working on iPad
- Freezing or crashing on certain devices

**Requested features**

- Add playback speed adjustment in PIP mode
- Implement a history or bookmarking feature
- Improve seamless transition to PIP mode
- Add support for more apps beyond just web-based ones
- Integrate with system-level PIP for better integration


### ReadTool

[App page](https://appshunter.io/ios/app/readtool-offline-reader/id6451404740)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is EXTENSION.app free?

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

### Is ReadTool free?

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

### Do EXTENSION.app or ReadTool have ads?

Neither EXTENSION.app nor ReadTool shows ads.

### Which is updated more often, EXTENSION.app or ReadTool?

EXTENSION.app ships an update every 5 weeks, and ReadTool every 24 months. Most recently, EXTENSION.app was updated on September 28, 2026 and ReadTool on September 22, 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.*