Estimated from the grossing charts of Oct 21, 2026 in the 53 countries we track, and ratings growth on the App Store.
From our daily snapshots of every grossing chart.
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| Oct 21, 2026 | not in a grossing chart |
| Oct 22, 2026 | not in a grossing chart |
Measured from the store, not estimated.
Latest reviews, Japan Google Play.
Good, but temperamental sometimes and not charging when should regardless of the electricity being below the threshold price set. Still better than having to wake up at 3am to start charging the car because your manufacturer thought that the top tier hybrid car on their series doesn't need a built in charging timer.
Fast response from support.
There's a screen where it asks me questions about whether I have an EV or not and what my tariff type is, but because I'm unable to select a tariff type (the view extends past my phone screen), I can't proceed. I'll remove this review if the issue is fixed. I have a Samsung Galaxy 24 Ultra Edit: I tried again with the latest version, still has the same issue.
awesome tool, great savings since I use it!
Some progress has been made as of october 2023, now app shows when it expects to charge. i3.is reliably charged at set time daily. Still, used power graph sometimes registers charged energy and sometimes just shows nothing. Can't comment solar compatibility until spring. EDIT: 2025- does not work with Polestar. Unable to log in.
The charging itself worked fine with my Renault Zoe. App itself looks nice too. The power consumption part of the app is pretty much useless as it does not take the amount charged from the car but rather estimates it somehow. Which did not work for me. So that makes the savings calculation and charging price useless too. Also the charging price does not include extra costs (power transfer fee and others)
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Where this app is buying and earning its users. Each link opens pre filtered.
Most repeated terms in the listing. Highlighted ones also appear in the title or short description.
Prices, ranks and reviews are per country. Revenue above is already worldwide.