Productivity · App Store · JapanRed ocean
勉強記録
勉強 記録
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
23
count alone does not show saturation
top-10 review sum
550,893
core saturation signal
#1 app reviews
333,714
dominant incumbent?
top-10 median
11,883
review spread
local-script apps
100%
localization
stale 1yr+
10%
high means a gap
A dominant app with 333,714 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 |
|---|---|---|
| Studyplus（スタディプラス）勉強記録＆進路サポートStudyplus Inc. | 4.71 | 333,714 |
| 集中｜勉強時間の記録・スマホ依存対策、資格学習や受験にbondavi Inc. | 4.85 | 132,145 |
| 勉強時間記録WEBDIA INC. | 4.51 | 4,624 |
| Focus To-Do: ポモドーロ技術 & タスク管理Shenzhen Tomato Software Technology Co., Ltd. | 4.7 | 34,975 |
| YPT - スタディーグループUnCheon Baek | 4.63 | 4,759 |
| スタディ記録帳 – 勉強時間の記録と計測Motoya Kawahara | 4.53 | 249 |
| StudyCast（スタキャス）勉強タイマーで集中力が継続！Benesse Corporation | 4.75 | 13,360 |
| 記録で習慣化 DotHabit 運動・勉強の継続・目標の達成Mono Incorporated | 4.66 | 16,407 |
03
What reviews complain about
from 0 competitor reviews
thin evidenceNot enough review evidence. We leave it blank instead of inventing complaints.