# iGreenNuts vs だこく専科

The clearest difference is in-app purchases: iGreenNuts at none against だこく専科's 1. iGreenNuts also leads on iOS requirement (12.0 vs 17.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. だこく専科 sells 1 one-off in-app purchase. iGreenNuts asks for nothing beyond the download.

iGreenNuts ships an update every 9 months, だこく専科 every 5 months. The most recent releases landed on August 29, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | iGreenNuts | だこく専科 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 months** |
| Size | 42 MB | 7 MB |
| Requires iOS | **12.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SUNTAC Solutions Inc.](https://appshunter.io/developer/389731224) | [YOSHIHIRO TAKAHASHI](https://appshunter.io/developer/574193873) |

## What reviewers say

### iGreenNuts

[App page](https://appshunter.io/ios/app/igreennuts/id1537340792)

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

**In-app purchases:** none


### だこく専科

[App page](https://appshunter.io/ios/app/id1546424592)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 試用期限を解除 | $6.99 | one-time |


## Frequently asked questions

### Is iGreenNuts free?

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

### Is だこく専科 free?

だこく専科 is free to download, with in-app purchases available.

### Do iGreenNuts or だこく専科 have ads?

Neither iGreenNuts nor だこく専科 shows ads.

### Which is updated more often, iGreenNuts or だこく専科?

iGreenNuts ships an update every 9 months, and だこく専科 every 5 months. Most recently, iGreenNuts was updated on August 29, 2026 and だこく専科 on September 17, 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.*