Comparison

CastMemo vs MY OSHI

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

Head to head
About

CastMemo

Features
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Ever come back to a story and think, “Wait… who was this person again?” CastMemo helps you keep track of characters and their relationships while enjoying books, manga, anime, movies, TV series, games, and more. Create a character list for each title, save the details you want to remember, and build visual relationship maps to see how everyone connects. KEEP CHARACTERS ORGANIZED Create characters for each title and save: • Names • Images • Traits and identifying details • Notes Whether you're reading a novel with a huge cast or returning to a TV series after a long break, CastMemo gives you a quick place to check who's who. SEE RELATIONSHIPS AT A GLANCE Add relationships between characters and turn them into a visual Relationship Map. Keep track of friends, family, rivals, enemies, allies, and more — or write your own relationship labels when you need something more specific. MADE FOR ALL KINDS OF STORIES Organize characters from: • Books and novels • Manga • Anime • Movies • TV series • Games • And more YOUR OWN CHARACTER REFERENCE CastMemo isn't a database that tells you who every character is. You create your own notes as you watch, read, and play, so you can save exactly the information that matters to you — without clutter you don't need. Great for: • Stories with large casts • Mystery novels • Long-running manga and anime • TV series you watch over time • Games with lots of characters • Returning to a story after a break Spend less time wondering “Who was that again?” and more time enjoying the story.

About

MY OSHI

Features
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もう!尊いが迷子にならない! 推し活をもっと楽しく、もっと快適にする専用アプリ! グループ推しも、複数推しも、もちろん「個人推し」も大歓迎! いろんなSNSで「尊い!」と集めたお気に入りの画像たち。数が多すぎて「あの時の神画像、どこにいったっけ?」となっていませんか? そんな嬉しい悩みをまるっと解決!あなただけの「好き」だけを詰め込んだ、最高の推し活空間を作りましょう! 【主な機能】 ◆ 推しに合わせて細かく部屋作り! 「グループ専用の部屋」を作り、さらにその中に「メンバーごとの部屋」を作れる便利な階層構造!お気に入りの「ケミ(ペア)」専用ルームも作れます。 もちろん、ソロアーティストや俳優などの「個人推し」の方も大活躍。出演作やジャンルごとに部屋を分けて、画像をごちゃごちゃさせずにスッキリ管理できます。 ◆ SNSの「尊い」が迷子にならない! X、Instagram、TikTok、YouTubeなどで見つけた最高の瞬間。「いいね」したはずなのに、後から探しても見つからない…そんな悲劇はもうおしまい!見つけたらすぐにこのアプリの「推しの部屋」へ永久保存。いつでもすぐにお気に入りの推しに再会できます。 ◆ 聖地巡礼に必須!「オソロフォト」モード 「推しが行ったあの場所」での聖地巡礼や、「推しと同じポーズ」での思い出を特別に記録!推しの写真とあなたの写真を、可愛い2分割のチェキ風フレームで並べて保存できる、推し活の楽しさが倍増! ◆ 幸せで彩る「自分だけの推しカレンダー」 今日の一番の「VIP写真」を選んで飾れる、あなただけの推しカレンダー!毎日コツコツ記録していくことで、1ヶ月のカレンダーが推しのベストショットで鮮やかに彩られていきます! ◆ 基本情報からSNSまで!充実のプロフィール機能 パッと見るだけで推しの情報がまるわかり! 名前、誕生日、メンバーカラー、ファンマーク、称号(リーダーなど)、さらに「推して何日目?」がわかる記念日カウントまでバッチリ記録できます。 【サクサク飛べる!SNSリンク機能】 X、Instagram、TikTok、YouTubeなど、各SNSのリンクを複数まとめて登録可能!わざわざ検索し直さなくても、ボタンをタップするだけで一発で各アカウントへアクセスできます! さあ、あなただけの空間で最高の推し活ライフを始めましょう! プライバシーポリシー: (https://app.notion.com/p/MY-OSHI-36e9180e747b80a18d94d658b427c916?source=copy_link) 利用規約 (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

CastMemo4 screens
MY OSHI4 screens

Verdict

The call

The clearest difference is in-app purchases: CastMemo at none against MY OSHI's 2. MY OSHI's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement 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. MY OSHI sells 2 in-app purchases, starting at $2.99 per month. CastMemo asks for nothing beyond the download.

UpkeepUpdate frequency

CastMemo ships an update every 3 days, MY OSHI every 2 days. Both last shipped on November 5, 2026.

Scorecard2 real differences · 4 level
CastMemo versus MY OSHI: the parameters behind the verdict, then further details
ParameterCastMemoMY OSHI
PriceFreeFree
Update frequencyEvery 3 daysEvery 2 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size70 MB292 MB
Age rating4+4+
DeveloperTsuji YusukeSAITO TATSUYUKI

In-app purchases

None

CastMemo

No in-app purchases

2 purchases

MY OSHI

Subscriptions2
  • 超推し活プラン$2.991 Month
  • 超推し活プラン(年額)$29.991 Year

Questions

Is CastMemo free?
CastMemo is free to download, with no in-app purchases.
Is MY OSHI free?
MY OSHI is free to download, with in-app purchases available.
Do CastMemo or MY OSHI have ads?
CastMemo shows ads; MY OSHI does not.
Which is updated more often, CastMemo or MY OSHI?
CastMemo ships an update every 3 days, and MY OSHI every 2 days. Most recently, CastMemo was updated on November 5, 2026 and MY OSHI on November 5, 2026.

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