# RiKeyboard vs 高校数学の解法

The clearest difference is in-app purchases: RiKeyboard at none against 高校数学の解法's 2. RiKeyboard also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.0). 高校数学の解法's advantage is update cadence (every 4 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. 高校数学の解法 sells 2 one-off in-app purchases. RiKeyboard asks for nothing beyond the download.

RiKeyboard ships an update every 3 weeks, 高校数学の解法 every 4 days. The most recent releases landed on June 10, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | RiKeyboard | 高校数学の解法 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/rikeyboard/id1386036240/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 82.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 17 MB | 134 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [nakamura yusaku](https://appshunter.io/developer/1662214416) | [Shogo Shibuya](https://appshunter.io/developer/1671795647) |

## What reviewers say

### 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

**In-app purchases:** none


### 高校数学の解法

[App page](https://appshunter.io/ios/app/id6445906314)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告の非表示 | $2.99 | one-time |
| Premium（買い切り） | $14.99 | one-time |


## Frequently asked questions

### Is RiKeyboard free?

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

### Is 高校数学の解法 free?

高校数学の解法 is free to download, with in-app purchases available.

### Do RiKeyboard or 高校数学の解法 have ads?

高校数学の解法 shows ads; RiKeyboard does not.

### Which is updated more often, RiKeyboard or 高校数学の解法?

RiKeyboard ships an update every 3 weeks, and 高校数学の解法 every 4 days. Most recently, RiKeyboard was updated on June 10, 2026 and 高校数学の解法 on September 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*