# DiaryTutor vs Sink In

The clearest difference is ads: Sink In at none against DiaryTutor's shown. DiaryTutor's advantage is update cadence (every 3 days vs every 2 weeks) and iOS requirement (13.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

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

DiaryTutor ships an update every 3 days, Sink In every 2 weeks. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | DiaryTutor | Sink In |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sink-in-language-in-context/id6786764536/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | — | Free |
| Size | 65 MB | 39 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YEN-HSUN LI](https://appshunter.io/developer/1894530013) | [Syuan Yu Siao](https://appshunter.io/developer/6784940490) |

## What reviewers say

### DiaryTutor

[App page](https://appshunter.io/ios/app/diarytutor/id6762529082)

**In-app purchases:** none


### Sink In

[App page](https://appshunter.io/ios/app/sink-in-language-in-context/id6786764536)

Learn languages by transforming any text into interactive lessons. Analyze vocabulary, grammar, tone, and sentence structure. Practice with spaced repetition, quizzes, and timed challenges.

**Highlights:** Screenshot and paste text for lessons, On-device text recognition, Vocabulary, grammar, tone analysis, Spaced repetition review, Quiz and timed challenge modes, Cross-device learning history sync

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

**In-app purchases:** none


## Frequently asked questions

### Is DiaryTutor free?

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

### Is Sink In free?

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

### Do DiaryTutor or Sink In have ads?

DiaryTutor shows ads; Sink In does not.

### Which is updated more often, DiaryTutor or Sink In?

DiaryTutor ships an update every 3 days, and Sink In every 2 weeks. Most recently, DiaryTutor was updated on October 28, 2026 and Sink In on October 24, 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.*