# STEM Connect vs SANSUI SDS Series

The clearest difference is update cadence: STEM Connect at weekly against SANSUI SDS Series's every 9 months. STEM Connect also leads on iOS requirement (12.0 vs 14.0). 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.

STEM Connect ships an update weekly, SANSUI SDS Series every 9 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | STEM Connect | SANSUI SDS Series |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 months |
| Size | 32 MB | 15 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [STEM s.r.l.](https://appshunter.io/developer/1577070000) | [Guangzhou Aidan Blessindo Electronic Co.,Ltd.](https://appshunter.io/developer/1413008258) |

## What reviewers say

### STEM Connect

[App page](https://appshunter.io/ios/app/stem-connect/id1577509982)

**Features:** macOS Compatibility

**In-app purchases:** none


### SANSUI SDS Series

[App page](https://appshunter.io/ios/app/sansui-sds-series/id6738270108)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STEM Connect free?

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

### Is SANSUI SDS Series free?

SANSUI SDS Series is free to download, with no in-app purchases.

### Do STEM Connect or SANSUI SDS Series have ads?

Neither STEM Connect nor SANSUI SDS Series shows ads.

### Which is updated more often, STEM Connect or SANSUI SDS Series?

STEM Connect ships an update weekly, and SANSUI SDS Series every 9 months. Most recently, STEM Connect was updated on October 30, 2026 and SANSUI SDS Series on October 30, 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.*