# Uknow.AI vs 単語マスターX

The clearest difference is in-app purchases: 単語マスターX at none against Uknow.AI's 14. 単語マスターX also leads on ads (none vs shown). Uknow.AI's advantage is iOS requirement (13.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Uknow.AI sells 14 in-app purchases, starting at $1.99 per month. 単語マスターX asks for nothing beyond the download.

Uknow.AI ships an update weekly, 単語マスターX every 2 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Uknow.AI | 単語マスターX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (4.2K ratings)](https://appshunter.io/ios/app/uknowai-homework-and-math-solver/id1447618956/reviews)** | — |
| Number of ratings | **4.2K** | — |
| Positive reviews | 77.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 121 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Study Evolution EdTech Pte. Ltd.](https://appshunter.io/developer/1612612206) | [SANWA Inc.](https://appshunter.io/developer/1878028373) |

## What reviewers say

### Uknow.AI

[App page](https://appshunter.io/ios/app/uknowai-homework-and-math-solver/id1447618956)

This AI-powered study assistant provides instant solutions and step-by-step guidance for all subjects, from math to writing. It offers video explanations, error analysis, and 24/7 support to help students improve their grades and understanding.

**Highlights:** AI-powered homework solutions, Step-by-step guidance, Support for all subjects, Video explanations, Wrongs Review for error analysis, 24/7 instant help

**Features:** Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Uknow.AI Plus Monthly Offer | $1.99 | per month |
| CheckMath Plus 1ヶ月 | $8.49 | per month |
| CheckMath Plus Monthly | $8.99 | per month |
| Uknow.AI Plus Monthly | $9.99 | per month |
| Uknow.AI Plus Monthly Offer | $9.99 | per month |
| CheckMath Plus Monthly | $9.99 | per month |
| Uknow.AI Plus 3 Monthly | $28.99 | per 3 months |
| Uknow.AI Plus 3 Monthly Offer | $28.99 | per 3 months |
| CheckMath Plus 1年間 | $56.99 | per year |
| CheckMath Plus Yearly | $59.99 | per year |
| CheckMath Plus 6-month | $59.99 | per 6 months |
| Uknow.AI Plus Yearly | $99.99 | per year |
| Uknow.AI Plus Yearly Offer | $99.99 | per year |
| CheckMath Plus Yearly | $99.99 | per year |

**What reviewers like**

- 🚀 Helps with everything and makes it easier
- 👍 Best app for anything
- 👍 Amazing app
- 👍 Awesome
- 👍 Great app

**What reviewers complain about**

- 🐛 App stops working, won't accept payment
- 🐛 Gives wrong answers
- 🐛 Disruptive ads
- 🐛 Inaccurate
- 🐛 Confusing

**Reported bugs**

- App crashing
- Incorrect answers
- Compatibility issues
- Login problems

**Requested features**

- More advanced features
- Improved accuracy
- Better free version
- Ability to do multiple problems at once
- Improved video explanations


### 単語マスターX

[App page](https://appshunter.io/ios/app/x/id6760735471)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Uknow.AI free?

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

### Is 単語マスターX free?

単語マスターX is free to download, with no in-app purchases.

### Do Uknow.AI or 単語マスターX have ads?

Uknow.AI shows ads; 単語マスターX does not.

### Which is updated more often, Uknow.AI or 単語マスターX?

Uknow.AI ships an update weekly, and 単語マスターX every 2 weeks. Most recently, Uknow.AI was updated on October 29, 2026 and 単語マスターX on October 25, 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.*