Jidensha vs mymizu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jidensha
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Core workout stats such as date, time, duration and total calorie burn are saved to both Jidensha's Log window as well as to Apple's HealthKit app. Workout routes can now be exported in the gpx file format for importing into Apple and Google Maps. Jidensha can also be used as a simple navigation tool since it updates your current locale in real time with detailed street address info displayed through Apple's Maps interface. WARNING: Continued use of GPS running in the background can dramatically decrease battery life.
mymizu
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.
- 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
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Using mymizu, you can: 1. Find your nearest water refill spot 2. Add new refill spots and help even more people refill 3. Track your impact, including number of plastic bottles, CO2 and money saved 4. Track your daily water intake and set hydration goals 5. Unlock fun facts and graphics to share with your friends! Our refill spots include both public water fountains and refill partners such as cafes, shops and hotels where you can refill for free - many have a mymizu sticker on display. You can contribute to the movement by adding new public refill spots you discover, adding to our global database of over 200,000 refill spots. You can add new public refill spots via the "Add refill spot" function. You can also encourage your favourite cafe, shop or hotel to sign up on the platform for free, to help even more people refill and eliminate single-use plastic. Cafes, shops and other businesses on the mymizu platform receive the following benefits (signing up is free!): 1. Increased foot traffic. 2. Enhanced branding through good corporate citizenship. 3. Strengthened community relations At mymizu, we believe that small actions can lead to a big impact, if we all join in together! That's why we'd love for you to join us as we take on the #PlasticsCrisis - one bottle at a time. So start tracking those refills and let's do this together!! Here's to a world with less plastic and more fun :)
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Jidensha | mymizu |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (19 ratings) — better |
| Positive reviews | — | 43.3% of reviews |
| Number of ratings | — | 19 — better |
| Update frequency | Every 8 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.4 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Mercury Software Japan Inc. | SOCIAL INNOVATION JAPAN, GENERAL INC. ASSOCIATION |
In-app purchases
Jidensha
No in-app purchases
mymizu
No in-app purchases









