# Jidensha vs mymizu

The clearest difference is update cadence: mymizu at every 3 months against Jidensha's every 8 months. mymizu also leads on iOS requirement (13.0 vs 17.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Jidensha ships an update every 8 months, mymizu every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Jidensha | mymizu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (19 ratings)](https://appshunter.io/ios/app/mymizu/id1480535233/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | — | 43.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 1 MB | 52 MB |
| Requires iOS | 17.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mercury Software Japan Inc.](https://appshunter.io/developer/580775861) | [SOCIAL INNOVATION JAPAN, GENERAL INC. ASSOCIATION](https://appshunter.io/developer/1480535232) |

## What reviewers say

### Jidensha

[App page](https://appshunter.io/ios/app/jidensha/id1069754855)

**In-app purchases:** none


### mymizu

[App page](https://appshunter.io/ios/app/mymizu/id1480535233)

Discover nearby water refill stations to reduce plastic waste. Track your environmental impact, monitor daily water intake, and contribute to a global database of refill locations. Share your progress and fun facts with friends.

**Highlights:** Find water refill spots, Add new refill locations, Track plastic bottle savings, Track CO2 and money saved, Monitor daily water intake, Set hydration goals, Unlock fun facts and graphics

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

**In-app purchases:** none


## Frequently asked questions

### Is Jidensha free?

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

### Is mymizu free?

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

### Do Jidensha or mymizu have ads?

Neither Jidensha nor mymizu shows ads.

### Which is updated more often, Jidensha or mymizu?

Jidensha ships an update every 8 months, and mymizu every 3 months. Most recently, Jidensha was updated on November 2, 2026 and mymizu on November 3, 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.*