IndieRadar
Productivity · App Store · JapanRed ocean

時間管理

時間 管理

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
577,677
core saturation signal
#1 app reviews
47,581
dominant incumbent?
top-10 median
12,060
review spread
local-script apps
100%
localization
stale 1yr+
20%
high means a gap

A dominant app with 47,581 reviews owns this space. Avoid a head-on fight, find a narrow gap.

02

Who is already here

top competitor apps (by search relevance)

AppRatingReviews
一日予定表 - カレンダー・ToDo リスト・日記KIYO, K.K.4.7447,581
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.4.85132,145
TimePod / タイムポッド - 時間記録Naia Inc.4.69437
時間管理 - TIME HACKER 時間を造るライフログYayoi Yabu4.462,718
Focus To-Do: ポモドーロ技術 & タスク管理Shenzhen Tomato Software Technology Co., Ltd.4.734,975
Structured - ビジュアルカレンダーunorderly GmbH4.78,647
1dayスケジュールShigeo Fukuda4.441,017
TickTick: todoリストとタスク管理とカレンダーAppest Limited4.7515,473
03

What reviews complain about

from 0 competitor reviews

thin evidenceNot enough review evidence. We leave it blank instead of inventing complaints.
Data: Apple iTunes Search API + public App Store reviews (App Store · Japan) · fetched 2026.08.06 · 0 review samples (recent first, max 500/app) · analysis pre-computed in a local batch (subscription LLM), no runtime calls