IndieRadar
Utilities · App Store · JapanRed ocean

写真 容量 削減

写真容量 削減写真 容量

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
25
count alone does not show saturation
top-10 review sum
52,817
core saturation signal
#1 app reviews
3,123
dominant incumbent?
top-10 median
1,302
review spread
local-script apps
90%
localization
stale 1yr+
10%
high means a gap

A dominant app with 3,123 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
かんたん写真圧縮 - 画像リサイズ・サイズ変更で容量削減Osawa Shunsuke4.453,123
写真容量削減: 画像圧縮くんYuki Miyamoto52
画像圧縮・動画圧縮・写真圧縮で空き容量を増やすリサイズ圧縮Saigen inc.4.422,550
ビデオ圧縮ー - ビデオと写真の容量削減アプリ丽譞 牛4.632,812
動画と写真の容量削減 - ストレージを整理して節約Naoyuki Rikiji53
画像圧縮アプリ・写真リサイズ - 写真容量・写真サイズSMDA GROUP SP. Z OO3.9153
動画圧縮 - まとめて容量削減&画質キープKAZUHIRO KAMAKURA55
280blockerTobila Systems Inc.4.7128,810
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