# OpenDNA vs ジョハリの窓テスト

The clearest difference is update cadence: ジョハリの窓テスト at every 5 days against OpenDNA's monthly. OpenDNA's advantage is iOS requirement (13.0 vs 15.5). 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.

OpenDNA ships an update monthly, ジョハリの窓テスト every 5 days. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | OpenDNA | ジョハリの窓テスト |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/opendna/id1620832341/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 95.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free | — |
| Size | 116 MB | 11 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [OpenDNA Inc.](https://appshunter.io/developer/994101524) | [ryuichi misaki](https://appshunter.io/developer/1494561865) |

## What reviewers say

### OpenDNA

[App page](https://appshunter.io/ios/app/opendna/id1620832341)

Explore art and philosophy through engaging 5-minute lessons and daily activities. Develop your critical thinking skills by discovering new concepts and recording your insights in a personal notepad.

**Highlights:** 5-minute learning content, Daily unusual activities, Personal notepad for discoveries, Explore Cubism, Learn about Haiku, Study light and shade in art, Investigate Western philosophy

**Features:** Vision Pro support

**In-app purchases:** none


### ジョハリの窓テスト

[App page](https://appshunter.io/ios/app/id1639346495)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OpenDNA free?

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

### Is ジョハリの窓テスト free?

ジョハリの窓テスト is free to download, with no in-app purchases.

### Do OpenDNA or ジョハリの窓テスト have ads?

Neither OpenDNA nor ジョハリの窓テスト shows ads.

### Which is updated more often, OpenDNA or ジョハリの窓テスト?

OpenDNA ships an update monthly, and ジョハリの窓テスト every 5 days. Most recently, OpenDNA was updated on November 3, 2026 and ジョハリの窓テスト on November 7, 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.*