# Memo Stacker vs Nenrin

The clearest difference is in-app purchases: Nenrin at none against Memo Stacker's 2. Nenrin also leads on ads (none vs shown) and update cadence (every 5 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 2 in-app purchases, starting at $2.99 per month. Nenrin asks for nothing beyond the download.

Memo Stacker ships an update every 2 weeks, Nenrin every 5 days. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Memo Stacker | Nenrin |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 6 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Trivial Ventures](https://appshunter.io/developer/1772834670) | [Azukid.com](https://appshunter.io/developer/354937951) |

## 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 (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro plan Monthly | $2.99 | per month |
| Remove Ads | $2.99 | one-time |


### Nenrin

[App page](https://appshunter.io/ios/app/nenrin/id6805710017)

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

**In-app purchases:** none


## Frequently asked questions

### Is Memo Stacker free?

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

### Is Nenrin free?

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

### Do Memo Stacker or Nenrin have ads?

Memo Stacker shows ads; Nenrin does not.

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

Memo Stacker ships an update every 2 weeks, and Nenrin every 5 days. Most recently, Memo Stacker was updated on October 2, 2026 and Nenrin on October 15, 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.*