# Plus vs MCMaintenanceBook

The clearest difference is price: MCMaintenanceBook at Free against Plus's $0.49. Plus's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

MCMaintenanceBook is free to download; Plus costs $0.49 up front. MCMaintenanceBook sells 1 one-off in-app purchase. Plus asks for nothing beyond the download.

Plus ships an update every 9 days, MCMaintenanceBook every 10 months. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Plus | MCMaintenanceBook |
| --- | --- | --- |
| Price | $0.49 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 10 months |
| Monetization | Paid | — |
| Size | 18 MB | 7 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hidenori Nakashima](https://appshunter.io/developer/1566865415) | [Tooru Inoue](https://appshunter.io/developer/1712590463) |

## What reviewers say

### Plus

[App page](https://appshunter.io/ios/app/plus-sizing-tire-pressure-pro/id1566865413)

This app helps you determine the correct tire pressure for your vehicle based on various international standards. It supports multiple pressure units and highlights the benefits of proper inflation for performance, safety, and fuel efficiency.

**Highlights:** Selectable tire standards (XL, RFD, ETRTO, TRA, JATMA), Switchable pressure units (kPa, bar, kg/cm2, psi), Benefits of correct tire pressure explained, Guidance on checking tire pressure frequency, Supports iPhone and iPad

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

**In-app purchases:** none


### MCMaintenanceBook

[App page](https://appshunter.io/ios/app/mcmaintenancebook/id6469745889)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add managed vehicles | $2.99 | one-time |


## Frequently asked questions

### Is Plus free?

Plus costs $0.49, with no in-app purchases.

### Is MCMaintenanceBook free?

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

### Do Plus or MCMaintenanceBook have ads?

MCMaintenanceBook shows ads; Plus does not.

### Which is updated more often, Plus or MCMaintenanceBook?

Plus ships an update every 9 days, and MCMaintenanceBook every 10 months. Most recently, Plus was updated on November 3, 2026 and MCMaintenanceBook on November 8, 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.*