# Memo Stacker vs IdeaKeeper

The clearest difference is in-app purchases: IdeaKeeper at none against Memo Stacker's 1. IdeaKeeper also leads on ads (none vs shown) and update cadence (every 2 days vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Memo Stacker sells 1 one-off in-app purchase. IdeaKeeper asks for nothing beyond the download.

Memo Stacker ships an update every 2 weeks, IdeaKeeper every 2 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Memo Stacker | IdeaKeeper |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 3 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Trivial Ventures](https://appshunter.io/developer/1772834670) | [Shinichiro Eto](https://appshunter.io/developer/1864675097) |

## What reviewers say

### Memo Stacker

[App page](https://appshunter.io/ios/app/memo-stacker-notes-and-diary/id6736639271)

This app helps you capture and organize your thoughts, ideas, and daily logs. It automatically stacks your entries chronologically, making it easy to look back on your past records through a visual timeline. Enjoy customizable features and secure data storage options.

**Highlights:** Timeline notes, Auto-organized by date, Habit tracking stats, Modern font customization, Dark mode support, iCloud Drive integration, Local data storage option

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### IdeaKeeper

[App page](https://appshunter.io/ios/app/ideakeeper-night-to-dawn/id6757116881)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Memo Stacker free?

Memo Stacker is free to download, with in-app purchases available.

### Is IdeaKeeper free?

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

### Do Memo Stacker or IdeaKeeper have ads?

Memo Stacker shows ads; IdeaKeeper does not.

### Which is updated more often, Memo Stacker or IdeaKeeper?

Memo Stacker ships an update every 2 weeks, and IdeaKeeper every 2 days. Most recently, Memo Stacker was updated on November 4, 2026 and IdeaKeeper on October 31, 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.*