# 赛默手写板 vs IDMA

The clearest difference is update cadence: IDMA at weekly against 赛默手写板's every 3 months. IDMA also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

赛默手写板 ships an update every 3 months, IDMA weekly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 赛默手写板 | IDMA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 25 MB | 44 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Wuhan Smartda Electronic Technology Co Ltd.](https://appshunter.io/developer/1540049336) | [SHANGHAI CREATIVE IDEA ELECTRONIC CO. LTD](https://appshunter.io/developer/1746465823) |

## What reviewers say

### 赛默手写板

[App page](https://appshunter.io/ios/app/id1621239745)

**Features:** macOS Compatibility

**In-app purchases:** none


### IDMA

[App page](https://appshunter.io/ios/app/idma/id6502690919)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 赛默手写板 free?

赛默手写板 is free to download, with no in-app purchases.

### Is IDMA free?

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

### Do 赛默手写板 or IDMA have ads?

Neither 赛默手写板 nor IDMA shows ads.

### Which is updated more often, 赛默手写板 or IDMA?

赛默手写板 ships an update every 3 months, and IDMA weekly. Most recently, 赛默手写板 was updated on November 3, 2026 and IDMA on November 4, 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.*