# 美儿SMA vs 灰板

The clearest difference is iOS requirement: 美儿SMA at 11.0 against 灰板's 13.4. On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | 美儿SMA | 灰板 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 31 MB | 45 MB |
| Requires iOS | **11.0** | 13.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Meier Advocacy & Support Center for SMA](https://appshunter.io/developer/1516804082) | [Shenqian Technology (Suzhou) Co., Ltd.](https://appshunter.io/developer/1740059640) |

## What reviewers say

### 美儿SMA

[App page](https://appshunter.io/ios/app/sma/id1516804083)

**Features:** macOS Compatibility

**In-app purchases:** none


### 灰板

[App page](https://appshunter.io/ios/app/id6483210175)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 美儿SMA free?

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

### Is 灰板 free?

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

### Do 美儿SMA or 灰板 have ads?

Neither 美儿SMA nor 灰板 shows ads.

### Which is updated more often, 美儿SMA or 灰板?

美儿SMA ships an update every 2 months, and 灰板 every 2 months. Most recently, 美儿SMA was updated on September 15, 2026 and 灰板 on October 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.*