# Stack｜自己投資アプリ vs Forge

The clearest difference is in-app purchases: Stack｜自己投資アプリ at none against Forge's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Forge sells 2 in-app purchases, starting at $4.99 per month. Stack｜自己投資アプリ asks for nothing beyond the download.

Stack｜自己投資アプリ ships an update every 10 days, Forge every 8 days. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Stack｜自己投資アプリ | Forge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 8 days** |
| Size | 41 MB | 7 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Nagato Kadoya](https://appshunter.io/developer/1575311338) | [JOSEPH JAHANSHAHI](https://appshunter.io/developer/1840554011) |

## 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


### Forge

[App page](https://appshunter.io/ios/app/forge-daily-discipline/id6757320752)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Forge Monthly | $4.99 | per month |
| Forge Annual (1 Year) | $19.99 | per year |


## 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 Forge free?

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

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

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

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

Stack｜自己投資アプリ ships an update every 10 days, and Forge every 8 days. Most recently, Stack｜自己投資アプリ was updated on September 10, 2026 and Forge on September 14, 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.*