# SuperX vs ChessBook Reader

The clearest difference is in-app purchases: ChessBook Reader at none against SuperX's 1. ChessBook Reader also leads on update cadence (monthly vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SuperX sells 1 one-off in-app purchase. ChessBook Reader asks for nothing beyond the download.

SuperX ships an update every 8 months, ChessBook Reader monthly. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | SuperX | ChessBook Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (19 ratings)](https://appshunter.io/ios/app/superx-pip-extension/id6450839791/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 133 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [坚涛 陈](https://appshunter.io/developer/1378858305) | [Vu-Hung Quan](https://appshunter.io/developer/6781876708) |

## What reviewers say

### SuperX

[App page](https://appshunter.io/ios/app/superx-pip-extension/id6450839791)

This app enables Picture-in-Picture (PIP) video mode for a wide range of applications and browsers. It allows you to play videos from various sources, including local files, in a floating window. Enjoy multitasking by watching content while using other apps.

**Highlights:** Picture-in-Picture video mode, Supports most apps and browsers, Transfers video to in-app browser, Local file support (video, image, PDF), Works with YouTube, Chrome, Safari, and more

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| None Ad Feature | $0.99 | one-time |


### ChessBook Reader

[App page](https://appshunter.io/ios/app/chessbook-reader/id6782721529)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SuperX free?

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

### Is ChessBook Reader free?

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

### Do SuperX or ChessBook Reader have ads?

Neither SuperX nor ChessBook Reader shows ads.

### Which is updated more often, SuperX or ChessBook Reader?

SuperX ships an update every 8 months, and ChessBook Reader monthly. Most recently, SuperX was updated on October 14, 2026 and ChessBook Reader on October 5, 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.*