# Rang Dong Smart vs SA Smart World

The clearest difference is update cadence: Rang Dong Smart at every 6 months against SA Smart World's every 14 months. 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.

Rang Dong Smart ships an update every 6 months, SA Smart World every 14 months. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Rang Dong Smart | SA Smart World |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (31 ratings)](https://appshunter.io/ios/app/rang-dong-smart/id1453529638/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 14 months |
| Monetization | Free | — |
| Size | 218 MB | 220 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [RANG DONG LIGHT SOURCE AND VACUUM FLASK JOINT STOCK COMPANY](https://appshunter.io/developer/1453529637) | [Hieu Pham Trung](https://appshunter.io/developer/1732169669) |

## What reviewers say

### Rang Dong Smart

[App page](https://appshunter.io/ios/app/rang-dong-smart/id1453529638)

Control and monitor your smart home devices remotely. Create custom automation scenes and schedules for precise device management. Share device access with family members for easy, anytime, anywhere control.

**Highlights:** Connect and control smart devices, Create automation scenes, Schedule timers and countdowns, Share device access with family, Real-time device monitoring, Remote control anytime, anywhere

**Features:** Vision Pro support

**In-app purchases:** none


### SA Smart World

[App page](https://appshunter.io/ios/app/sa-smart-world/id6478190729)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rang Dong Smart free?

Rang Dong Smart is free to download, with no in-app purchases.

### Is SA Smart World free?

SA Smart World is free to download, with no in-app purchases.

### Do Rang Dong Smart or SA Smart World have ads?

Neither Rang Dong Smart nor SA Smart World shows ads.

### Which is updated more often, Rang Dong Smart or SA Smart World?

Rang Dong Smart ships an update every 6 months, and SA Smart World every 14 months. Most recently, Rang Dong Smart was updated on September 10, 2026 and SA Smart World on September 8, 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.*