# ReadLang WatchLang vs ContextCat

The clearest difference is in-app purchases: ReadLang WatchLang at none against ContextCat's 3. ContextCat's advantage is update cadence (weekly vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ContextCat sells 3 in-app purchases, starting at $7.99 per month. ReadLang WatchLang asks for nothing beyond the download.

ReadLang WatchLang ships an update every 2 weeks, ContextCat weekly. Both last shipped on November 12, 2026.

## The numbers

| Metric | ReadLang WatchLang | ContextCat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (64 ratings)](https://appshunter.io/ios/app/readlang-watchlang/id1602114377/reviews)** | — |
| Number of ratings | **64** | — |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 77 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Nguyen Hong Phuc](https://appshunter.io/developer/1519084763) | [Caner Gulay](https://appshunter.io/developer/1554769164) |

## What reviewers say

### ReadLang WatchLang

[App page](https://appshunter.io/ios/app/readlang-watchlang/id1602114377)

Learn languages by translating words and phrases on any webpage or YouTube video with dual subtitles. Practice vocabulary in context and improve listening skills with native pronunciations.

**Highlights:** Translate words and phrases on any webpage, YouTube dual subtitle player, Learn over 100 languages, Practice vocabulary in context, Listen to native pronunciations

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

**In-app purchases:** none


### ContextCat

[App page](https://appshunter.io/ios/app/contextcat-learn-by-reading/id6737737343)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ContextCat Pro (Monthly) | $7.99 | per month |
| ContextCat Pro (6 Months) | $24.99 | per 6 months |
| ContextCat Pro (Yearly) | $49.99 | per year |


## Frequently asked questions

### Is ReadLang WatchLang free?

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

### Is ContextCat free?

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

### Do ReadLang WatchLang or ContextCat have ads?

Both ReadLang WatchLang and ContextCat show ads.

### Which is updated more often, ReadLang WatchLang or ContextCat?

ReadLang WatchLang ships an update every 2 weeks, and ContextCat weekly. Most recently, ReadLang WatchLang was updated on November 12, 2026 and ContextCat on November 12, 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.*