# D vs WhyOpen

The clearest difference is in-app purchases: D at none against WhyOpen's 2. WhyOpen's advantage is update cadence (every 6 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. WhyOpen sells 2 in-app purchases, starting at $2.99 per month. D asks for nothing beyond the download.

D ships an update every 4 months, WhyOpen every 6 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | D | WhyOpen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/d-pad-hangul-keyboard/id6749746020/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 2 MB | 52 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JUNG LLC](https://appshunter.io/developer/1831911732) | [Hilmican Celiker](https://appshunter.io/developer/1847464941) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-pad-hangul-keyboard/id6749746020)

This keyboard app is designed based on the principles of the Hunminjeongeum Haeryebon, arranging consonants and vowels according to phonetic and elemental principles. It offers unique input methods for consonants and vowels, including variations for aspirated sounds and combined vowels.

**Highlights:** Hunminjeongeum Haeryebon design principles, Phonetically arranged consonants, Elementally arranged vowels, Unique input for aspirated consonants, Variations for combined vowels, Customizable key inputs

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

**In-app purchases:** none


### WhyOpen

[App page](https://appshunter.io/ios/app/whyopen-screen-time/id6768672558)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $14.99 | per year |


## Frequently asked questions

### Is D free?

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

### Is WhyOpen free?

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

### Do D or WhyOpen have ads?

Neither D nor WhyOpen shows ads.

### Which is updated more often, D or WhyOpen?

D ships an update every 4 months, and WhyOpen every 6 days. Most recently, D was updated on October 30, 2026 and WhyOpen on October 31, 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.*