# 無機化学 vs WurdS

The clearest difference is in-app purchases: 無機化学 at none against WurdS's 1. 無機化学 also leads on update cadence (every 2 days vs every 10 months) and device support. On price and iOS requirement there is nothing between them.

Both are free to download. WurdS sells 1 one-off in-app purchase. 無機化学 asks for nothing beyond the download.

無機化学 ships an update every 2 days, WurdS every 10 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 無機化学 | WurdS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id1351078183/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 98.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | **Every 2 days** | Every 10 months |
| Size | 42 MB | 25 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Touhara](https://appshunter.io/developer/1268738829) | [Kouta Takahashi](https://appshunter.io/developer/1739984430) |

## What reviewers say

### 無機化学

[App page](https://appshunter.io/ios/app/id1351078183)

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

**In-app purchases:** none


### WurdS

[App page](https://appshunter.io/ios/app/wurds/id6482990133)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| removeads | $1.99 | one-time |


## Frequently asked questions

### Is 無機化学 free?

無機化学 is free to download, with no in-app purchases.

### Is WurdS free?

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

### Which is updated more often, 無機化学 or WurdS?

無機化学 ships an update every 2 days, and WurdS every 10 months. Most recently, 無機化学 was updated on November 6, 2026 and WurdS on November 4, 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.*