# Bubble Level + Measure Kit vs KaNKaN

The clearest difference is review sentiment: KaNKaN at 86% against Bubble Level + Measure Kit's 13%. KaNKaN also leads on iOS requirement (12.0 vs 17.0). Bubble Level + Measure Kit's advantage is price (Free vs $2.99) and update cadence (every 4 months vs every 101 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Bubble Level + Measure Kit is free to download; KaNKaN costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bubble Level + Measure Kit ships an update every 4 months, KaNKaN every 101 months. The most recent releases landed on October 21, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Bubble Level + Measure Kit | KaNKaN |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Positive reviews | 12.5% of reviews | **85.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 101 months |
| Monetization | Paid | Paid |
| Size | 3 MB | 29 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sensonet](https://appshunter.io/developer/793745582) | [Kaji Takatsugu](https://appshunter.io/developer/465688467) |

## What reviewers say

### Bubble Level + Measure Kit

[App page](https://appshunter.io/ios/app/bubble-level-plus-measure-kit/id806787408)

This utility app turns your device into a high-precision spirit level. Measure angles on any surface with a beautifully designed interface. Available at a special limited-time price.

**Highlights:** High precision spirit level, Angle measurement, Beautifully designed UI, Pocket-sized utility, iPhone and iPad compatible

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Bubble Level + Measure Kit free?

Bubble Level + Measure Kit is free to download, with no in-app purchases.

### Is KaNKaN free?

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

### Do Bubble Level + Measure Kit or KaNKaN have ads?

Neither Bubble Level + Measure Kit nor KaNKaN shows ads.

### Which is updated more often, Bubble Level + Measure Kit or KaNKaN?

Bubble Level + Measure Kit ships an update every 4 months, and KaNKaN every 101 months. Most recently, Bubble Level + Measure Kit was updated on October 21, 2026 and KaNKaN on October 17, 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.*