Comparison

decocom(デコカン)世界にひとつの着せ替えスマホ作成 vs Oshidays byGMO

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

Head to head
About

decocom(デコカン)世界にひとつの着せ替えスマホ作成

Design and create personalized phone cases, keychains, and other merchandise using your favorite photos and illustrations. Easily swap out phone case designs to match your mood or event, perfect for "oshi-katsu" (fan activities) and unique gifts.

Highlights
  • Customizable phone case designs
  • Create "oshi-katsu" items
  • Design original merchandise
  • Use personal photos and illustrations
  • Official collaborations and materials
  • Variety of merchandise options
Features
Read full description

あなたの「好き!」を、ずっとそばに。 「着せ替えスマホ」で、毎日のスマホライフをもっと自由に、もっと自分らしく。 decocom(デコカン)は、スマホひとつで「着せ替えスマホ」や「オリジナルグッズ」「推し活アイテム」を簡単に作れるアプリです。 お気に入りの写真やイラストを使って、世界にひとつだけのアイテムをデザインしませんか? ※本アプリは旧「デザインケース」から名称変更し、パワーアップしました! 【NEW! 着せ替えスマホが登場】 その日の気分やイベントに合わせて、スマホのデザインも着せ替えよう! 「着せ替えスマホ」なら、ベースとなるケース本体はそのままに、背面のデザインプレート(フェイス)を交換するだけ。 ・推し活に:ライブの日は「推し」のデザインに ・お仕事に:平日はシンプルな「大人カラー」に ・プライベートに:休日は「ペット」や「子供」の写真に 1つのスマホで楽しみ方は無限大。お財布にも優しく、エコに楽しめます。 【decocomで手に入るグッズ】 スマホケース以外にも、豊富なラインナップをご用意しています。 ・iPhoneケース(最新機種まで対応) ・アクリルキーホルダー(アクキー) ・トートバッグ ・レザーキーホルダー ・ミニハンカチタオル ・AirPodsケース ・モバイルバッテリー ・スマホリング ほか 【対応ケースタイプと価格】 高品質なプリントをお手頃価格で。 ・着せ替えスマホ スタートセット(ベースケース+フェイス):2,900円(税込3,190円) ・ハードケース(白/黒/透明):1,800円(税込1,980円) ・ソフトケース(透明/白):2,200円(税込2,420円) ・フラップケース(手帳型ケース):3,300円(税込3,630円) ・フラップミニ(手帳型ケース):3,300円(税込3,630円) ・グリッターケース(ゴールド/シルバー/ピンク/ブルー):2,900円(税込3,190円) ※その他のグッズ価格はアプリ内でご確認ください。 【公式コラボも多数展開中】 decocom限定!人気YouTuberやアーティスト、企業の「公式素材」や「限定スタンプ」を使ってデザインできます。 ・地球の歩き方 × decocom コラボ企画 ・あかさかの箱 × decocom コラボ企画 ・すずしょうと コラボグッズ ・のばまん デザインケース ・ナナオ × decocom コラボ企画 ここでしか作れない推し活グッズで、愛をもっと特別な形に。 【こんなシーンにおすすめ】 ・推し活:推しの名前や参戦日を入れたケースやアクキーを作りたい ・ギフト:母の日、誕生日、記念日、クリスマスに特別な贈り物を用意したい ・イベント:文化祭、サークル、会社やチームでのおそろいグッズを作りたい ・日常:ペットや子供の写真を使った「うちの子グッズ」を持ち歩きたい 【安心のお届けと品質】 ・ご入金確認後、5日〜1週間で発送 ・全国一律送料250円(5,000円以上で送料無料) ・すべて国内工場で丁寧に印刷・梱包 ・「印刷が綺麗!」「想像以上の仕上がり」とレビューでも好評です あなたの“好き”を、毎日に。 今すぐダウンロードして、自分だけのグッズ作りをはじめよう!

About

Oshidays byGMO

Track your fandom activities and celebrate anniversaries with your favorite idols or characters. Log memories, manage merchandise purchases, and set savings goals. Customize pages and earn in-app currency by watching ads.

Highlights
  • Register multiple idols/characters
  • Automatic day counting for support and anniversaries
  • Diary and memory logging
  • Merchandise purchase tracking
  • Idol savings management
  • Customizable backgrounds and text
  • Earn gems by watching ads
Features
Read full description

This app lets you instantly see how many days have passed since you started supporting your favorite idol, while also tracking your fandom activities (anniversary dates) and managing your finances! Packed with features to support your fan activities, like diaries, merchandise purchase logs, and idol savings! Register as many idols as you like—your favorite idols, anime characters, manga characters, and more! Not just for diaries about memories with your idol, it's also perfect for recording important memories like couple anniversaries, wedding anniversaries, your child's growth, or memories with your pet. 【Features】 ◆ Register Multiple Idols Create up to 100 dedicated pages for each idol! Record not just when you started supporting them, but also anniversaries, their signature colors, favorite things, and more. Once registered, the app automatically counts the days since you started supporting them and counts down to important milestones like the 100-day anniversary or 1-year anniversary! On the anniversary day, be sure to share the screen with your friends or your idol! ◆Earn Gems for Each Favorite Watch video ads to earn gems, which you can exchange for various items. Watching videos on your favorite's dedicated page triggers a sparkling effect for them, making gem collection fun! ※Exchange options will be added gradually ◆Record Stories for Each Favorite Want to keep diary-like memories with your favorite? This app features a “Story” function for preserving those moments. Creating a story automatically counts up the days since that entry. You can also set a future date for a story to count down the days until then! Perfect for counting down to your favorite idol's live event! ◆Freely Customize Backgrounds and Text You can freely customize your favorite idol's dedicated page. If you can't find a background image you like, freely choose colors, add animated effects, and create your very own unique page!

Screenshots

decocom(デコカン)世界にひとつの着せ替えスマホ作成4 screens
Oshidays byGMO4 screens

Verdict

The call

The clearest difference is review sentiment: Oshidays byGMO at 73% against decocom(デコカン)世界にひとつの着せ替えスマホ作成's 17%. Oshidays byGMO also leads on rating (5.0 vs 3.0) and ratings volume (20 vs 2). decocom(デコカン)世界にひとつの着せ替えスマホ作成's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence and device support 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. Oshidays byGMO sells 1 in-app purchase, starting at $2.99 per month. decocom(デコカン)世界にひとつの着せ替えスマホ作成 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Oshidays byGMO holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Oshidays byGMO has 20 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 17% of decocom(デコカン)世界にひとつの着せ替えスマホ作成's written reviews are positive against 73% of Oshidays byGMO's.

UpkeepUpdate frequency

decocom(デコカン)世界にひとつの着せ替えスマホ作成 ships an update every 10 days, Oshidays byGMO weekly. The most recent releases landed on September 21, 2026 and October 3, 2026 respectively.

Scorecard7 real differences · 3 level
decocom(デコカン)世界にひとつの着せ替えスマホ作成 versus Oshidays byGMO: the parameters behind the verdict, then further details
Parameterdecocom(デコカン)世界にひとつの着せ替えスマホ作成Oshidays byGMO
PriceFreeFree
Rating3.0 (2 ratings)5.0 (20 ratings) — better
Positive reviews16.7% of reviews72.5% of reviews — better
Number of ratings220 — better
Update frequencyEvery 10 daysWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size50 MB148 MB
Age rating4+4+
DeveloperDECORATION COMPANY K.K.TownWiFi Inc.

Customer experience

decocom(デコカン)世界にひとつの着せ替えスマホ作成

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews6 reviews
Positive16.7%
Neutral0.0%
Negative83.3%

Oshidays byGMO

All ratings20 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews51 reviews
Positive72.5%
Neutral17.6%
Negative9.8%

In-app purchases

None

decocom(デコカン)世界にひとつの着せ替えスマホ作成

No in-app purchases

1 purchases

Oshidays byGMO

Subscriptions1
  • Premium plan 1 month$2.991 Month

Questions

Is decocom(デコカン)世界にひとつの着せ替えスマホ作成 free?
decocom(デコカン)世界にひとつの着せ替えスマホ作成 is free to download, with no in-app purchases.
Is Oshidays byGMO free?
Oshidays byGMO is free to download, with in-app purchases available.
Which has better reviews, decocom(デコカン)世界にひとつの着せ替えスマホ作成 or Oshidays byGMO?
Oshidays byGMO is rated higher. decocom(デコカン)世界にひとつの着せ替えスマホ作成 averages 3.0 out of 5 from 2 ratings, while Oshidays byGMO averages 5.0 from 20 ratings.
Do decocom(デコカン)世界にひとつの着せ替えスマホ作成 or Oshidays byGMO have ads?
Oshidays byGMO shows ads; decocom(デコカン)世界にひとつの着せ替えスマホ作成 does not.
Which is updated more often, decocom(デコカン)世界にひとつの着せ替えスマホ作成 or Oshidays byGMO?
decocom(デコカン)世界にひとつの着せ替えスマホ作成 ships an update every 10 days, and Oshidays byGMO weekly. Most recently, decocom(デコカン)世界にひとつの着せ替えスマホ作成 was updated on September 21, 2026 and Oshidays byGMO on October 3, 2026.

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