# SizeChina vs CatEar

The clearest difference is in-app purchases: SizeChina at none against CatEar's 4. SizeChina also leads on iOS requirement (12.0 vs 17.0). CatEar's advantage is update cadence (every 3 days vs every 60 months). On price, ads and device support there is nothing between them.

Both are free to download. CatEar sells 4 in-app purchases, starting at $2.99 per month. SizeChina asks for nothing beyond the download.

SizeChina ships an update every 60 months, CatEar every 3 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SizeChina | CatEar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/catear/id6751868252/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 60 months | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 23 MB | 275 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Apps Resource Centre, Hong Kong Baptist University](https://appshunter.io/developer/1375410542) | [雄杰 杨](https://appshunter.io/developer/1775233913) |

## What reviewers say

### SizeChina

[App page](https://appshunter.io/ios/app/sizechina/id1481186588)

**Features:** macOS Compatibility

**In-app purchases:** none


### CatEar

[App page](https://appshunter.io/ios/app/catear/id6751868252)

Enhance your auditory perception with scientifically designed modules. Improve speech recognition, practice with various sound simulations, and track your progress with detailed records. Includes tools for hearing tests and noise detection.

**Highlights:** Speech recognition training, Noise interference practice, Telephone voice simulation, Musical instrument timbre practice, Progress tracking, Noise detection, Hearing tests

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 包月 | $2.99 | per month |
| 包年 | $9.99 | per year |
| 红心补充包（10颗） | $0.99 | one-time |
| Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is SizeChina free?

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

### Is CatEar free?

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

### Do SizeChina or CatEar have ads?

Neither SizeChina nor CatEar shows ads.

### Which is updated more often, SizeChina or CatEar?

SizeChina ships an update every 60 months, and CatEar every 3 days. Most recently, SizeChina was updated on October 26, 2026 and CatEar 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.*