# KaNKaN vs MCMaintenanceBook

The clearest difference is price: MCMaintenanceBook at Free against KaNKaN's $2.99. MCMaintenanceBook also leads on update cadence (every 10 months vs every 101 months). KaNKaN's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

MCMaintenanceBook is free to download; KaNKaN costs $2.99 up front. MCMaintenanceBook sells 1 one-off in-app purchase. KaNKaN asks for nothing beyond the download.

KaNKaN ships an update every 101 months, MCMaintenanceBook every 10 months. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | KaNKaN | MCMaintenanceBook |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 101 months | **Every 10 months** |
| Monetization | Paid | — |
| Size | 29 MB | 7 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [Tooru Inoue](https://appshunter.io/developer/1712590463) |

## What reviewers say

### KaNKaN

[App page](https://appshunter.io/ios/app/kankan/id1084225678)

This app simulates Japanese fire truck sirens and flashing lights. It allows users to record and play back custom sounds, featuring different siren patterns and bell sounds. Note that it does not function as a real siren amplifier and legal use of siren sounds should be confirmed.

**Highlights:** Simulated fire truck sirens, Flashing light patterns, Custom sound recording, Preset siren and bell sounds, Left/right turn sound effects, Adjustable siren volume

**Features:** macOS Compatibility

**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 KaNKaN free?

KaNKaN costs $2.99, with no in-app purchases.

### Is MCMaintenanceBook free?

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

### Do KaNKaN or MCMaintenanceBook have ads?

MCMaintenanceBook shows ads; KaNKaN does not.

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

KaNKaN ships an update every 101 months, and MCMaintenanceBook every 10 months. Most recently, KaNKaN was updated on November 11, 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.*