iOS App Store · solo developers
See the market before you build the app.
Not search volume. We show competition saturation and review complaints from real data, then check whether a solo developer can actually build it. The goal is to waste less time.
Weekly report
A handful of iOS opportunities, every week.
Where competition is thin, what reviews complain about, the smallest version a solo dev can ship. No ads, real data only.
This is not a search-volume ranking. Apple does not publish App Store search volume. IndieRadar uses public, legal data (iTunes Search API, public App Store reviews) to show how crowded a space is and what users complain about. Read the limits honestly.
98 keywords·1 open gaps·data as of 2026.08.06
Open gapMid competitionRed ocean
98 · open gaps first
Photo & Video
スクショ 整理
1,511
top-10 review sum
90%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
容量不足 解消
2,746
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
wifi パスワード
3,002
top-10 review sum
40%
local-script apps
60%
stale 1yr+
signal only→
Photo & Video
似た写真 削除
3,405
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Photo & Video
連写 整理
4,255
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
古い写真 復元
5,138
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
水平器
9,982
top-10 review sum
100%
local-script apps
30%
stale 1yr+
signal only→
Productivity
マインドマップ
19,123
top-10 review sum
80%
local-script apps
20%
stale 1yr+
signal only→
Utilities
定規 アプリ
21,130
top-10 review sum
80%
local-script apps
30%
stale 1yr+
signal only→
Utilities
単位 変換
21,885
top-10 review sum
100%
local-script apps
50%
stale 1yr+
signal only→
Utilities
騒音 測定
26,457
top-10 review sum
100%
local-script apps
40%
stale 1yr+
signal only→
Utilities
通貨 換算
18,368
top-10 review sum
100%
local-script apps
40%
stale 1yr+
signal only→
Photo & Video
iphone 容量 増やす
31,717
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
懐中電灯
37,870
top-10 review sum
90%
local-script apps
60%
stale 1yr+
signal only→
Utilities
写真 容量 削減
52,817
top-10 review sum
90%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
ストレージ 整理
53,038
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Utilities
文字 起こし
56,691
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Productivity
朝活
57,900
top-10 review sum
100%
local-script apps
30%
stale 1yr+
signal only→
Photo & Video
重複写真 削除
58,490
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Photo & Video
画像 圧縮
71,909
top-10 review sum
90%
local-script apps
0%
stale 1yr+
signal only→
Photo & Video
画像 サイズ 変更
73,529
top-10 review sum
90%
local-script apps
20%
stale 1yr+
signal only→
Utilities
ストップウォッチ
85,614
top-10 review sum
70%
local-script apps
20%
stale 1yr+
signal only→
Utilities
電池 長持ち
89,808
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Photo & Video
heic 変換
93,987
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Productivity
習慣トラッカー
96,493
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Photo & Video
写真 削除
107,150
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Productivity
目標管理
124,413
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Productivity
やることリスト
136,150
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
電波 測定
136,636
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Productivity
習慣化
140,415
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
通信速度 測定
161,416
top-10 review sum
90%
local-script apps
50%
stale 1yr+
signal only→
Photo & Video
透かし 削除
168,830
top-10 review sum
90%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
動画 圧縮
174,145
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
電卓
182,356
top-10 review sum
90%
local-script apps
20%
stale 1yr+
signal only→
Utilities
コンパス
190,374
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Utilities
パスワード 管理
193,785
top-10 review sum
70%
local-script apps
0%
stale 1yr+
signal only→
Productivity
ポモドーロ
208,519
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
手ぶれ 補正
209,678
top-10 review sum
70%
local-script apps
20%
stale 1yr+
signal only→
Photo & Video
写真 高画質化
210,710
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Photo & Video
gif 作成
224,333
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Productivity
集中タイマー
232,282
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Productivity
音声メモ
246,540
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Productivity
チェックリスト
274,405
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Utilities
ファイル 変換
283,584
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Productivity
日記アプリ
298,458
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Utilities
タイマー
311,153
top-10 review sum
90%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
写真 復元
317,015
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
写真整理
318,810
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Productivity
手書きメモ
326,688
top-10 review sum
100%
local-script apps
50%
stale 1yr+
signal only→
Utilities
ボイスレコーダー
343,390
top-10 review sum
100%
local-script apps
30%
stale 1yr+
signal only→
Productivity
todoリスト
364,109
top-10 review sum
80%
local-script apps
10%
stale 1yr+
signal only→
Utilities
wifi 速度 測定
371,036
top-10 review sum
90%
local-script apps
10%
stale 1yr+
signal only→
Utilities
メモ帳
411,280
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Productivity
メモ
462,343
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
スキャナー アプリ
482,102
top-10 review sum
100%
local-script apps
40%
stale 1yr+
signal only→
Photo & Video
写真 スキャン
509,114
top-10 review sum
80%
local-script apps
10%
stale 1yr+
signal only→
Utilities
書類 スキャン
514,493
top-10 review sum
70%
local-script apps
20%
stale 1yr+
signal only→
Productivity
勉強タイマー
547,478
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Productivity
勉強記録
550,893
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
pdf 変換
571,874
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Productivity
時間管理
577,677
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Photo & Video
写真 pdf 化
607,194
top-10 review sum
90%
local-script apps
20%
stale 1yr+
signal only→
Utilities
名刺 スキャン
610,285
top-10 review sum
80%
local-script apps
20%
stale 1yr+
signal only→
Photo & Video
証明写真
649,763
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Utilities
pdf 編集
665,688
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Photo & Video
ぼかし 加工
712,050
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Productivity
ノートアプリ
859,331
top-10 review sum
90%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
切り抜き
998,567
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
動画 結合
1,125,271
top-10 review sum
90%
local-script apps
40%
stale 1yr+
signal only→
Productivity
貯金アプリ
1,177,487
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
美顔 加工
1,210,680
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Productivity
お小遣い帳
1,212,655
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
qr コード 読み取り
1,256,513
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
写真 文字入れ
1,265,145
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
バーコード 読み取り
1,267,747
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
カメラ 翻訳
1,276,592
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Photo & Video
背景透過
1,281,075
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
翻訳
1,292,062
top-10 review sum
80%
local-script apps
0%
stale 1yr+
signal only→
Photo & Video
動画 トリミング
1,311,225
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
モザイク
1,366,112
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Productivity
支出管理
1,369,001
top-10 review sum
100%
local-script apps
20%
stale 1yr+
signal only→
Productivity
節約アプリ
1,393,568
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Productivity
リマインダー
1,403,179
top-10 review sum
90%
local-script apps
0%
stale 1yr+
signal only→
Productivity
簡単 家計簿
1,418,641
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Photo & Video
コラージュ
1,422,192
top-10 review sum
90%
local-script apps
10%
stale 1yr+
signal only→
Utilities
家計簿
1,578,225
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
写真 加工
1,874,537
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Photo & Video
動画 編集
1,950,062
top-10 review sum
80%
local-script apps
10%
stale 1yr+
signal only→
Photo & Video
写真 編集
1,955,890
top-10 review sum
100%
local-script apps
10%
stale 1yr+
signal only→
Utilities
レシート 読み取り
2,173,576
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Productivity
議事録
2,260,016
top-10 review sum
90%
local-script apps
0%
stale 1yr+
signal only→
Photo & Video
写真 バックアップ
2,277,037
top-10 review sum
90%
local-script apps
10%
stale 1yr+
signal only→
Productivity
手帳
2,322,623
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Productivity
スケジュール管理
2,378,356
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Productivity
カレンダー
2,541,021
top-10 review sum
100%
local-script apps
0%
stale 1yr+
signal only→
Productivity
ルーティン
—
top-10 review sum
0%
local-script apps
0%
stale 1yr+
signal only→
Productivity
タスク管理
—
top-10 review sum
0%
local-script apps
0%
stale 1yr+
signal only→
Productivity
予定管理
—
top-10 review sum
0%
local-script apps
0%
stale 1yr+
signal only→
Why we built it
I shipped an app, ran ads, and found people were not even searching for it.
I built a photo cleanup app, shipped it, and ran Apple Search Ads. The global photo cleaner keywords lost hard to giant apps, and only the local Korean term got any taps. We built this so other solo developers spend less on that kind of trial and error.