good app
Estimated from the grossing charts of Oct 21, 2026 in the 53 countries we track.
From our daily snapshots of every grossing chart.
| Sep 24, 2026 | $33.6K a month |
| Sep 25, 2026 | $29.6K a month |
| Sep 26, 2026 | $31.5K a month |
| Sep 27, 2026 | $31.5K a month |
| Sep 28, 2026 | $31.5K a month |
| Sep 29, 2026 | $32.5K a month |
| Sep 30, 2026 | $34.3K a month |
| Oct 1, 2026 | $33.9K a month |
| Oct 2, 2026 | $31.1K a month |
| Oct 3, 2026 | $29.5K a month |
| Oct 4, 2026 | $31.2K a month |
| Oct 5, 2026 | $30.2K a month |
| Oct 6, 2026 | $28.9K a month |
| Oct 7, 2026 | $30.9K a month |
| Oct 8, 2026 | $31.4K a month |
| Oct 9, 2026 | $32.6K a month |
| Oct 10, 2026 | $317.9K a month |
| Oct 11, 2026 | $69.5K a month |
| Oct 12, 2026 | $81K a month |
| Oct 13, 2026 | $79.5K a month |
| Oct 14, 2026 | $65.2K a month |
| Oct 15, 2026 | $65.8K a month |
| Oct 16, 2026 | $61.8K a month |
| Oct 17, 2026 | $61.4K a month |
| Oct 18, 2026 | $62.4K a month |
| Oct 19, 2026 | $55.6K a month |
| Oct 20, 2026 | $51.5K a month |
| Oct 21, 2026 | $51.2K a month |
| Oct 22, 2026 | not in a grossing chart |
Measured from the store, not estimated.
From the latest 408 reviews on the Japan Google Play, Jan 7, 2021 to Oct 20, 2026: 5% are 1 or 2 stars. Open a theme to read what people wrote.
5 of the 1 and 2 star reviews.
★★★★★ Forces you to answer a million superfluous questions before demanding a subscription
★★★★★ I'm a premium member with an annual subscription, and after just one month of use, the app logged me out without any explanation.
★★★★★ you put your data in and then can't see it after 7 days without paying for a subscription.
4 of the 1 and 2 star reviews.
★★★★★ but since morning they aren't syncing.
★★★★★ app doesn't always sync data between accounts and devices.
★★★★★ My app has been struggling to sync for the last 9 hours, it says Can't connect to a server, I have uninstalled and reinstalled the app, logged out and now I cannot log back in as it says Error.
2 of the 1 and 2 star reviews.
★★★★★ My app has been struggling to sync for the last 9 hours, it says Can't connect to a server, I have uninstalled and reinstalled the app, logged out and now I cannot log back in as it says Error.
★★★★★ We can't log back in—an error message keeps appearing.
2 of the 1 and 2 star reviews.
★★★★★ using too much battery even if its idle.
★★★★★ Disproportionate battery consumption(even in optimized mode) for an app with basic usages: adding records and counting elapsed time.
116 of the 4 and 5 star reviews.
★★★★★ This app is very much useful for tracking baby's activities.
★★★★★ This app has been very helpful with tracking feeding and sleep times.
★★★★★ Erby is an incredibly useful app.
97 of the 4 and 5 star reviews.
★★★★★ It's not only intuitive but the UI is easy to use.
★★★★★ great to track everything and easy to use!
★★★★★ The app is really great, very intuitive with lots of functions.
20 of the 4 and 5 star reviews.
★★★★★ The ads aren't annoying so you can use the free version just as effectively, but I bought premium simply because I wanted to support an amazing product!
★★★★★ I use the free version to track my pumping and breast feeding.
★★★★★ the price is definitely worth it, and extremely useful to use with my husband
17 of the 4 and 5 star reviews.
★★★★★ It's not only intuitive but the UI is easy to use.
★★★★★ The UI UX is pleasant, it covers all the features a parents needs
★★★★★ Very clean and understandable interface that doesn't overwhelm.
7 of the 4 and 5 star reviews.
★★★★★ Once you customize it to your liking its smooth sailing from there.
★★★★★ Quick launch tool makes it easy to tap and continue on with care.
★★★★★ a nice app that just works, everything feels smooth and is responsive.
Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.
Latest reviews, Japan Google Play.
good app
Great app... Subscription is too $$$ But unlike Nara, let's you do basic tracking for free...just wish they let you do one additional caregiver free then charge for additional ones after that. Oh well. Will keep looking.
As a Data Analyst - this has made it all so fun!
Worse app, took 100 notifications initially to install... Worthless!
Really makes it easier for newborn parents to track everything and you can edit the time stamps, custom categories and tasks.
Very usefull for newborn babies, especially if you breast-feeding
Same category, earning about as much.
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.