# Sudoku vs 鲸航E学

The clearest difference is ads: 鲸航E学 at none against Sudoku's shown. 鲸航E学 also leads on monetization model (free vs ad-supported) and iOS requirement (15.1 vs 17.0). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sudoku ships an update every 4 days, 鲸航E学 every 3 days. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Sudoku | 鲸航E学 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 3 days** |
| Monetization | Ad-supported | **Free** |
| Size | 8 MB | 123 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [阳理 江](https://appshunter.io/developer/1645314423) | [长沙凹凸批改智能科技有限公司](https://appshunter.io/developer/1804000490) |

## What reviewers say

### Sudoku

[App page](https://appshunter.io/ios/app/sudoku-number-puzzle-pro/id6761462681)

This app offers a comprehensive Sudoku experience, providing step-by-step hints, technique tutorials, and solution replays to help users understand the logic behind each puzzle. It features multiple difficulty levels and custom puzzle input for a personalized learning journey.

**Highlights:** Step-by-step hints with explanations, Technique tutorials for classic strategies, Solution replay for learning from mistakes, Four difficulty levels, Custom puzzle input, Progress tracking and statistics, Smart assistance tools

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

**In-app purchases:** none


### 鲸航E学

[App page](https://appshunter.io/ios/app/e/id6776083750)

This app offers a free and ad-free English learning experience with a vast library of listening resources, AI-powered speaking practice, and smart note-taking tools. It features podcasts, exam preparation materials, and engaging video courses to enhance fluency and comprehension.

**Highlights:** Extensive free listening resources (podcasts, exam prep), AI-powered speaking practice with real-time feedback, AI-generated class notes and summaries, Interactive video courses, Ad-free and no in-app purchases

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

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku free?

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

### Is 鲸航E学 free?

鲸航E学 is free to download, with no in-app purchases.

### Do Sudoku or 鲸航E学 have ads?

Sudoku shows ads; 鲸航E学 does not.

### Which is updated more often, Sudoku or 鲸航E学?

Sudoku ships an update every 4 days, and 鲸航E学 every 3 days. Most recently, Sudoku was updated on October 31, 2026 and 鲸航E学 on November 1, 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.*