# Stack｜自己投資アプリ vs Scanote AI

The clearest difference is update cadence: Scanote AI at every 5 days against Stack｜自己投資アプリ's every 10 days. On price, ads, 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.

Stack｜自己投資アプリ ships an update every 10 days, Scanote AI every 5 days. The most recent releases landed on September 10, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Stack｜自己投資アプリ | Scanote AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 5 days** |
| Size | 41 MB | 7 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Nagato Kadoya](https://appshunter.io/developer/1575311338) | [Keita Iida](https://appshunter.io/developer/1890128914) |

## What reviewers say

### Stack｜自己投資アプリ

[App page](https://appshunter.io/ios/app/stack/id6745755185)

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

**In-app purchases:** none


### Scanote AI

[App page](https://appshunter.io/ios/app/scanote-ai/id6761522259)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stack｜自己投資アプリ free?

Stack｜自己投資アプリ is free to download, with no in-app purchases.

### Is Scanote AI free?

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

### Do Stack｜自己投資アプリ or Scanote AI have ads?

Neither Stack｜自己投資アプリ nor Scanote AI shows ads.

### Which is updated more often, Stack｜自己投資アプリ or Scanote AI?

Stack｜自己投資アプリ ships an update every 10 days, and Scanote AI every 5 days. Most recently, Stack｜自己投資アプリ was updated on September 10, 2026 and Scanote AI on September 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.*