memoChica vs Co
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
memoChica
This app helps you rediscover your past thoughts and ideas. It randomly displays your saved memos, allowing you to revisit forgotten notes and gain new insights. Use it for brainstorming, journaling, or even as a fun way to recall information.
- Random memo display
- View full memo text in list
- Search memos by text
- Share memos to other apps
- "Furikaeru" retrospective function
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"Please feel the power of memos with memoChica!" 1: Write a lot of memos. 2: Randomly look back on past memos. 3: Say "Wow!" to the forgotten memos. What's memoChica? This app is randomly displays the memos you have written. It picks up and displays the memos you have written on a whim. A memo that has been completely forgotten may become a big noticeable gemstone by reading it back at an unexpected timing. Various ways to use It can be used for things that you want to look back on later, such as idea memos and diaries, for memorization in study, and as a roulette-like plaything. Main functions of memoChica - "Furikaeru function" to look back on past memos - Display the title and the full text in the memo list. You don't have to tap to go to the details screen to read the full text. - Search for memos by character string including title and text. - Share saved memos via email, Evernote, Twitter, etc. About "Furikaeru function" "Furikaeru function" is a feature of memoChica. 1 point will be consumed for each retrospective. You can replenish 5 points by looking at the advertisement. You can use the memo function freely at any time regardless of the point.
Co
This app facilitates music production collaboration by allowing users to record all interactions, share files, discuss revisions, and upload demos. It offers folder management for files, pin functionality for important comments, and private groups for member-exclusive sharing.
- Record all music production interactions
- Share production files
- Discuss revision points
- Upload and review demos
- Folder management for files
- Pin important comments
- Private group sharing
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■ 音楽制作のすべてのやり取りを、コーライティングスタジオで記録 ・音楽制作のアイデア出し ・制作過程のファイルの共有 ・修正ポイントのディスカッション ・デモが完成したらアップロードしてみんなで確認 すべてのやりとりをコーライティングスタジオ上で行うことができます。 ■ 制作過程にあわせてファイルを「フォルダ管理」 アップロードするファイルをフォルダ分けして管理できます。 バージョンや制作過程に合わせてフォルダを作ることで、ファイルが混ざり「あのファイルどこだっけ?」と探す手間が省けます。 ■ 大切なコメントは「ピンどめ」で保存 たくさんの議論をすると、「あの時のコメントってどこだっけ?」と過去のコメントを見失うことがありませんか。 重要なコメントを「ピン留め」することで、いつでも目的のコメントにたどりつく事ができます。 ■ 非公開のグループで「メンバー限定の共有」 アップロードしたファイルやコメントは、参加しているメンバー内でのみ共有されます。 公開されたくない作品も、安全に管理することができます。
Screenshots
Verdict
The clearest difference is review sentiment: memoChica at 82% against Co's 33%. memoChica also leads on update cadence (every 3 weeks vs every 5 months). Co's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
memoChica ships an update every 3 weeks, Co every 5 months. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.
| Parameter | memoChica | Co |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 82.4% of reviews — better | 33.3% of reviews |
| Update frequency | Every 3 weeks — better | Every 5 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 9 MB |
| Age rating | 12+ | 17+ |
| Developer | Shinichiro Yamamoto | 株式会社CWF |
Customer experience
memoChica
Co
In-app purchases
memoChica
No in-app purchases
Co
No in-app purchases









