# X vs The Book I Wrote

The clearest difference is in-app purchases: X at none against The Book I Wrote's 1. X also leads on iOS requirement (15.5 vs 18.0). The Book I Wrote's advantage is update cadence (every 4 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. The Book I Wrote sells 1 one-off in-app purchase. X asks for nothing beyond the download.

X ships an update every 2 months, The Book I Wrote every 4 days. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | X | The Book I Wrote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/x-code-manager/id1527413811/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 52 MB | 12 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HANSA-FLEX AG](https://appshunter.io/developer/1028409540) | [Miroslav Pulik](https://appshunter.io/developer/6800069890) |

## What reviewers say

### X

[App page](https://appshunter.io/ios/app/x-code-manager/id1527413811)

Manage your hydraulic components and machines with a digital twin. Organize machines into folders, perform inspections, and access data offline. Seamlessly syncs with a web application for office and field collaboration.

**Highlights:** Digital twin for hydraulic components, Machine organization in folders, Component breakdown, Regulatory inspection module, Offline data access and synchronization, App and web application integration

**Features:** Vision Pro support

**In-app purchases:** none


### The Book I Wrote

[App page](https://appshunter.io/ios/app/the-book-i-wrote/id6801027635)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $39.99 | one-time |


## Frequently asked questions

### Is X free?

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

### Is The Book I Wrote free?

The Book I Wrote is free to download, with in-app purchases available.

### Do X or The Book I Wrote have ads?

Neither X nor The Book I Wrote shows ads.

### Which is updated more often, X or The Book I Wrote?

X ships an update every 2 months, and The Book I Wrote every 4 days. Most recently, X was updated on October 9, 2026 and The Book I Wrote on October 25, 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.*