# KaNKaN vs LumberFit

The clearest difference is price: LumberFit at Free against KaNKaN's $2.99. LumberFit also leads on update cadence (every 2 weeks vs every 101 months). KaNKaN's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.0). On ads and device support there is nothing between them.

LumberFit is free to download; KaNKaN costs $2.99 up front. LumberFit sells 1 in-app purchase, starting at $1.99 per month. KaNKaN asks for nothing beyond the download.

KaNKaN ships an update every 101 months, LumberFit every 2 weeks. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | KaNKaN | LumberFit |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 101 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 29 MB | 6 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [剑炜 陈](https://appshunter.io/developer/1868267178) |

## 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


### LumberFit

[App page](https://appshunter.io/ios/app/lumberfit/id6757940921)

Optimize wood cutting and plan transport for woodworking projects. Features include board cutting layouts, 3D vehicle loading visualization, and AR-based measurement. Share results and save projects.

**Highlights:** Board cutting optimization, 3D vehicle load checking, AR camera measurement, Export and share results, Save and load cutting schemes, Supports multiple units

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LumberFit 1 Month VIP | $1.99 | per month |


## Frequently asked questions

### Is KaNKaN free?

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

### Is LumberFit free?

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

### Do KaNKaN or LumberFit have ads?

Neither KaNKaN nor LumberFit shows ads.

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

KaNKaN ships an update every 101 months, and LumberFit every 2 weeks. Most recently, KaNKaN was updated on October 17, 2026 and LumberFit on October 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.*