# EsayControl vs 视力筛查

The clearest difference is update cadence: EsayControl at every 9 days against 视力筛查's every 5 weeks. 视力筛查's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 15.1). On price, ads 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.

EsayControl ships an update every 9 days, 视力筛查 every 5 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | EsayControl | 视力筛查 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 5 weeks |
| Size | 11 MB | 24 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [婉文 谢](https://appshunter.io/developer/1251352462) | [哈尔滨天健高新技术有限公司](https://appshunter.io/developer/1202803670) |

## What reviewers say

### EsayControl

[App page](https://appshunter.io/ios/app/esaycontrol/id1357519583)

**Features:** macOS Compatibility

**In-app purchases:** none


### 视力筛查

[App page](https://appshunter.io/ios/app/id1567851515)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EsayControl free?

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

### Is 视力筛查 free?

视力筛查 is free to download, with no in-app purchases.

### Do EsayControl or 视力筛查 have ads?

Neither EsayControl nor 视力筛查 shows ads.

### Which is updated more often, EsayControl or 视力筛查?

EsayControl ships an update every 9 days, and 视力筛查 every 5 weeks. Most recently, EsayControl was updated on November 2, 2026 and 视力筛查 on November 3, 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.*