# memoChica vs Co

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.

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.

## The numbers

| Metric | memoChica | Co |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **82.4% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 15 MB | 9 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Shinichiro Yamamoto](https://appshunter.io/developer/1118743580) | [株式会社CWF](https://appshunter.io/developer/1619787817) |

## What reviewers say

### memoChica

[App page](https://appshunter.io/ios/app/memochica-notes-for-ideas/id1118743581)

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.

**Highlights:** Random memo display, View full memo text in list, Search memos by text, Share memos to other apps, "Furikaeru" retrospective function

**Features:** macOS Compatibility

**In-app purchases:** none


### Co

[App page](https://appshunter.io/ios/app/co-writing-studio/id1439900178)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is memoChica free?

memoChica is free to download, with no in-app purchases.

### Is Co free?

Co is free to download, with no in-app purchases.

### Do memoChica or Co have ads?

memoChica shows ads; Co does not.

### Which is updated more often, memoChica or Co?

memoChica ships an update every 3 weeks, and Co every 5 months. Most recently, memoChica was updated on October 13, 2026 and Co on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*