# KINRAKU vs 心電図Navi

The clearest difference is in-app purchases: KINRAKU at none against 心電図Navi's 1. KINRAKU also leads on iOS requirement (13.0 vs 17.0). 心電図Navi's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. 心電図Navi sells 1 one-off in-app purchase. KINRAKU asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | KINRAKU | 心電図Navi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 24 MB | 4 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Fuji Bit Inc.](https://appshunter.io/developer/1874205957) | [Takahiro Ito](https://appshunter.io/developer/6787806782) |

## What reviewers say

### KINRAKU

[App page](https://appshunter.io/ios/app/kinraku/id6764113422)

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

**In-app purchases:** none


### 心電図Navi

[App page](https://appshunter.io/ios/app/navi/id6802314816)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| フル版（全波形解放） | $5.99 | one-time |


## Frequently asked questions

### Is KINRAKU free?

KINRAKU is free to download, with no in-app purchases.

### Is 心電図Navi free?

心電図Navi is free to download, with in-app purchases available.

### Do KINRAKU or 心電図Navi have ads?

KINRAKU shows ads; 心電図Navi does not.

### Which is updated more often, KINRAKU or 心電図Navi?

KINRAKU ships an update every 3 weeks, and 心電図Navi every 3 weeks. Most recently, KINRAKU was updated on October 28, 2026 and 心電図Navi on October 31, 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.*