# USB Sharp Pro vs Car Maintenance Record Book

The clearest difference is price: Car Maintenance Record Book at Free against USB Sharp Pro's $2.99. USB Sharp Pro's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On update cadence, ads and in-app purchases there is nothing between them.

Car Maintenance Record Book is free to download; USB Sharp Pro costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

USB Sharp Pro ships an update every 2 months, Car Maintenance Record Book every 4 months. The most recent releases landed on October 16, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | USB Sharp Pro | Car Maintenance Record Book |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.0 (12 ratings)](https://appshunter.io/ios/app/usb-sharp-pro/id436590784/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 59.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | — |
| Size | 52 MB | 4 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [锦文 游](https://appshunter.io/developer/406832160) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### USB Sharp Pro

[App page](https://appshunter.io/ios/app/usb-sharp-pro/id436590784)

Transform your iPhone or iPad into a portable wireless storage disk for efficient file management.  Supports a wide range of file types for viewing, editing, and transferring via Wi-Fi or iTunes.

**Highlights:** Wireless storage disk, File management, Wi-Fi transfer, iTunes file sharing, Document reader, E-book reader, Music player

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

**In-app purchases:** none


### Car Maintenance Record Book

[App page](https://appshunter.io/ios/app/car-maintenance-record-book/id6772142322)

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

**In-app purchases:** none


## Frequently asked questions

### Is USB Sharp Pro free?

USB Sharp Pro costs $2.99, with no in-app purchases.

### Is Car Maintenance Record Book free?

Car Maintenance Record Book is free to download, with no in-app purchases.

### Do USB Sharp Pro or Car Maintenance Record Book have ads?

Neither USB Sharp Pro nor Car Maintenance Record Book shows ads.

### Which is updated more often, USB Sharp Pro or Car Maintenance Record Book?

USB Sharp Pro ships an update every 2 months, and Car Maintenance Record Book every 4 months. Most recently, USB Sharp Pro was updated on October 16, 2026 and Car Maintenance Record Book on September 27, 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.*