280days : Pregnancy Diary App
280days : Pregnancy Diary App is a free iOS app in the Medical category, published by amane factory inc.. It was first released on 4 Feb 2016, 10 years ago. Its developer shipped 1 update in the 90 days to 3 Oct 2026; the latest, version 3.4.7, came out on 12 Aug 2026.
280days : Pregnancy Diary App was in the top 10 of the Top Free Medical chart in Japan on every one of the last 30 days, reaching #5 on 4 days, most recently on 24 Sep 2026. It stood at #10 on 3 Oct 2026, down 1 place from a week earlier. On that day it appeared in the same chart in 6 countries. In Japan it holds a 4.64 average across 21,035 ratings, 3 more than a week earlier. GameQuant tracks 280days : Pregnancy Diary App every day in 6 countries.
Tracked every day · one continuous series, no gaps
Data through · free data is delayed 7 days
280days : Pregnancy Diary App — Top Free · Medical · Japan · last 30 days
1 = top of the chart · best rank recorded each day
Source: GameQuant, https://gamequant.io/app/ios/995864179/280days-pregnancy-diary-app
<iframe src="https://gamequant.io/embed/ios/995864179?country=jp&range=30" width="640" height="400" style="max-width:100%;border:0" loading="lazy" title="280days : Pregnancy Diary App: rank chart by GameQuant"></iframe><br><small>Source: <a href="https://gamequant.io/app/ios/995864179/280days-pregnancy-diary-app">GameQuant</a></small>
<a href="https://gamequant.io/app/ios/995864179/280days-pregnancy-diary-app"><img src="https://gamequant.io/chart/ios/995864179.png?country=jp&range=30" width="600" height="450" alt="280days : Pregnancy Diary App: rank in Top Free · Medical, Japan, last 30 days"></a><br><small>Source: <a href="https://gamequant.io/app/ios/995864179/280days-pregnancy-diary-app">GameQuant</a></small>
Free to use in articles, reports and posts with this credit and a link to this page. Embed shows the live chart with a range switch; Image is a picture that updates daily.
Download chart (PNG)Rating distribution · Japan
share of all ratings · 3 Oct 2026
| 5 stars | 79% | |
|---|---|---|
| 4 stars | 13% | |
| 3 stars | 3% | |
| 2 stars | 1% | |
| 1 star | 3% |
Rank by country
Top Free · Medical · best rank on 3 Oct 2026
| Country | Rank | 7-day change | Best, 90 days | Ratings |
|---|---|---|---|---|
 Japan |
10 | down 1 | 4 · 3 Sep | 21,035 |
 South Korea |
43 | down 8 | 20 · 26 Jul | 10,073 |
 Taiwan |
7 | up 1 | 2 · 1 Oct | 16,328 |
+3 more countries, every chart and category, and the full history are in the licensed dataset.
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