# 有機化学 vs RiKeyboard

The clearest difference is price: RiKeyboard at Free against 有機化学's $5.99. RiKeyboard also leads on iOS requirement (8.0 vs 15.6). 有機化学's advantage is update cadence (every 2 days vs every 3 weeks) and review sentiment (93% vs 82%). On ads, in-app purchases and device support there is nothing between them.

RiKeyboard is free to download; 有機化学 costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

有機化学 ships an update every 2 days, RiKeyboard every 3 weeks. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | 有機化学 | RiKeyboard |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | — | **[3.0 (3 ratings)](https://appshunter.io/ios/app/rikeyboard/id1386036240/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | **92.9% of reviews** | 82.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | — | Free |
| Size | 43 MB | 17 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Touhara](https://appshunter.io/developer/1268738829) | [nakamura yusaku](https://appshunter.io/developer/1662214416) |

## What reviewers say

### 有機化学

[App page](https://appshunter.io/ios/app/id1317601872)

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

**In-app purchases:** none


### RiKeyboard

[App page](https://appshunter.io/ios/app/rikeyboard/id1386036240)

This app provides an enhanced keyboard experience with a wide range of characters beyond standard alphabets and numbers. It includes various symbols and special mathematical characters, all accessible without requiring full keyboard access.

**Highlights:** Alphabet input, Number input (123, ¹²³, ₁₂₃), Standard symbols, Special characters (integral, sigma), No full access required

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

**In-app purchases:** none


## Frequently asked questions

### Is 有機化学 free?

有機化学 costs $5.99, with no in-app purchases.

### Is RiKeyboard free?

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

### Do 有機化学 or RiKeyboard have ads?

Neither 有機化学 nor RiKeyboard shows ads.

### Which is updated more often, 有機化学 or RiKeyboard?

有機化学 ships an update every 2 days, and RiKeyboard every 3 weeks. Most recently, 有機化学 was updated on November 6, 2026 and RiKeyboard on November 2, 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.*