Productivity · App Store · JapanRed ocean
勉強タイマー
勉強 タイマー
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
23
count alone does not show saturation
top-10 review sum
547,478
core saturation signal
#1 app reviews
132,145
dominant incumbent?
top-10 median
10,665
review spread
local-script apps
100%
localization
stale 1yr+
20%
high means a gap
A dominant app with 132,145 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 |
|---|---|---|
| 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 |
| 勉強タイマー 超集中｜波音・雨音×ポモドーロ×記録Thomson Inc. | 4.52 | 6,100 |
| 集中旅行者 - フロータイマーWEI JEN CHEN | 4.78 | 18,755 |
| Studyplus（スタディプラス）勉強記録＆進路サポートStudyplus Inc. | 4.71 | 333,714 |
| フォーカスチキン-トマトタイマー 自律学習タイマー 極簡必須Shenzhen KreatBloom Technology Co., Ltd. | 4.66 | 1,040 |
| 異星フォーカス | ドット絵の惑星育成タイマー ExocusByland Technology (Shanghai) Co., Ltd. | 4.84 | 472 |
| 勉強時間記録WEBDIA INC. | 4.51 | 4,624 |
| シンプル時計 - 勉強に最適Reo Shigeno | 4.42 | 423 |
03
What reviews complain about
from 0 competitor reviews
thin evidenceNot enough review evidence. We leave it blank instead of inventing complaints.