# LANZOOM S3 vs SHEYIN

The clearest difference is update cadence: SHEYIN at every 2 weeks against LANZOOM S3's every 3 months. LANZOOM S3's advantage is iOS requirement (9.0 vs 13.0). On price, ads, 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.

LANZOOM S3 ships an update every 3 months, SHEYIN every 2 weeks. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | LANZOOM S3 | SHEYIN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 27 MB | 86 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen ZStime Co., Ltd.](https://appshunter.io/developer/374142269) | [Guangzhou Sheyin Technology Co., Ltd.](https://appshunter.io/developer/1883660384) |

## What reviewers say

### LANZOOM S3

[App page](https://appshunter.io/ios/app/lanzoom-s3/id1440568825)

**Features:** macOS Compatibility

**In-app purchases:** none


### SHEYIN

[App page](https://appshunter.io/ios/app/sheyin/id6760291729)

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

**In-app purchases:** none


## Frequently asked questions

### Is LANZOOM S3 free?

LANZOOM S3 is free to download, with no in-app purchases.

### Is SHEYIN free?

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

### Do LANZOOM S3 or SHEYIN have ads?

Neither LANZOOM S3 nor SHEYIN shows ads.

### Which is updated more often, LANZOOM S3 or SHEYIN?

LANZOOM S3 ships an update every 3 months, and SHEYIN every 2 weeks. Most recently, LANZOOM S3 was updated on October 26, 2026 and SHEYIN on October 28, 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.*