# memoChica vs IMCSM ISMS Wiki

The clearest difference is ads: IMCSM ISMS Wiki at none against memoChica's shown. memoChica's advantage is update cadence (every 3 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement 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, IMCSM ISMS Wiki every 3 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | memoChica | IMCSM ISMS Wiki |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 82.4% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 35 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Shinichiro Yamamoto](https://appshunter.io/developer/1118743580) | [MariApps Marine Solutions Pvt. Ltd.](https://appshunter.io/developer/1040404561) |

## 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


### IMCSM ISMS Wiki

[App page](https://appshunter.io/ios/app/imcsm-isms-wiki/id6633430284)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is memoChica free?

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

### Is IMCSM ISMS Wiki free?

IMCSM ISMS Wiki is free to download, with no in-app purchases.

### Do memoChica or IMCSM ISMS Wiki have ads?

memoChica shows ads; IMCSM ISMS Wiki does not.

### Which is updated more often, memoChica or IMCSM ISMS Wiki?

memoChica ships an update every 3 weeks, and IMCSM ISMS Wiki every 3 months. Most recently, memoChica was updated on November 2, 2026 and IMCSM ISMS Wiki on October 30, 2026.

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