Productivity · App Store · JapanRed ocean
カレンダー
The signal here is competition saturation, not search demand. You decide; we lay out the evidence.
01
How crowded is it
saturation from top-app review concentration
result apps
20
count alone does not show saturation
top-10 review sum
2,541,021
core saturation signal
#1 app reviews
370,422
dominant incumbent?
top-10 median
117,204
review spread
local-script apps
100%
localization
stale 1yr+
0%
high means a gap
A dominant app with 370,422 reviews owns this space. Avoid a head-on fight, find a narrow gap.
02
Who is already here
top competitor apps (by search relevance)
| App | Rating | Reviews |
|---|---|---|
| シンプルカレンダー - スケジュール帳、予定表かれんだー管理Komorebi Inc. | 4.6 | 370,422 |
| TimeTree タイムツリー - カレンダーや予定表の共有TimeTree, Inc. | 4.61 | 1,034,606 |
| Cahoカレンダー かわいいスケジュール帳カレンダーLAN CHEN | 4.75 | 393,629 |
| Google カレンダーGoogle LLC | 4.33 | 38,059 |
| カレンダーiTunes K.K. | 4.42 | 127,087 |
| Lifebear カレンダーと手帳で予定表スケジュール管理Lifebear inc. | 4.54 | 320,359 |
| Yahoo!カレンダーYahoo Japan Corporation | 4.19 | 107,016 |
| minical カレンダー・スケジュール帳＆カレンダーの共有minical Inc. | 4.6 | 24,496 |
03
What reviews complain about
from 0 competitor reviews
thin evidenceNot enough review evidence. We leave it blank instead of inventing complaints.