Comparison

Color Master vs marume

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Color Master

Discover beautiful color palettes to spark your creativity. This app is ideal for designers and illustrators seeking inspiration through a wide variety of colors.

Highlights
  • Color palette discovery
  • Inspiration for designers
  • Inspiration for illustrators
  • Wide variety of colors
Features
Read full description

ColorMasterは、あなたの美しい配色を見つけるためのアプリです。 デザイナーやイラストレーターさんは是非ダウンローしてみてください。 色々なカラーを見るだけでアイデアが浮かび上がってくるはずです。

About

marume

Easily round the corners of your photos with intuitive slider controls. Adjust corner radius, aspect ratio, and even select individual corners to round. Save high-quality images directly to your camera roll.

Highlights
  • Adjustable corner radius
  • Aspect ratio cropping
  • Individual corner selection
  • Dark mode support
  • High-quality saving
  • Intuitive slider controls
Features
Read full description

「marume」は、iPhone内の写真の「角を丸める」ことに特化した画像加工アプリです。複雑な編集ツールを省き、直感的なスライダー操作だけで、素早く思い通りの角丸画像を作成して保存できます。 【主な機能】 ・角丸サイズの無段階調整 スライダーを左右に動かすだけで、角の丸み(Radius)をリアルタイムに確認しながら変更できます。 ・アスペクト比(縦横比)の変更 1:1(正方形)、4:3、3:4など、用途に合わせて写真の比率を変更しながら切り抜くことが可能です。 ・丸める角の個別指定機能 4つの角(左上、右上、左下、右下)の中から、丸めたい角と丸めたくない角を個別にON/OFFで指定できます。 ・ダークモード完全対応 端末のシステム設定に連動し、暗い場所でも目に優しいダークモードUIで操作が可能です。 ・カメラロールへの高画質保存 加工した画像は画質を落とさず、そのままお使いのiPhoneのカメラロール(写真アプリ)へ保存されます。 【こんな用途におすすめ】 ・SNS(X、Instagram、LINEなど)のプロフィールアイコン画像の作成 ・ブログ記事やプレゼン資料に挿入する、柔らかい印象の画像素材の作成 ・ホーム画面のウィジェット用写真の加工

Screenshots

Color Master4 screens
marume4 screens

Verdict

The call

The clearest difference is review sentiment: Color Master at 100% against marume's 0%. Color Master also leads on iOS requirement (15.0 vs 18.0). marume's advantage is update cadence (every 3 days vs every 13 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Color Master ships an update every 13 months, marume every 3 days. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

Scorecard3 real differences · 5 level
Color Master versus marume: the parameters behind the verdict, then further details
ParameterColor Mastermarume
PriceFreeFree
Positive reviews100.0% of reviews — better0.0% of reviews
Update frequencyEvery 13 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better18.0
Further details — not scored
Size1 MB0 MB
Age rating4+4+
DeveloperRikuto SatoShuya Komiya

Customer experience

Color Master

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

marume

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Color Master

No in-app purchases

None

marume

No in-app purchases

Questions

Is Color Master free?
Color Master is free to download, with no in-app purchases.
Is marume free?
marume is free to download, with no in-app purchases.
Do Color Master or marume have ads?
Neither Color Master nor marume shows ads.
Which is updated more often, Color Master or marume?
Color Master ships an update every 13 months, and marume every 3 days. Most recently, Color Master was updated on September 9, 2026 and marume on September 10, 2026.

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