# SJ vs MLAB SMART

The clearest difference is update cadence: SJ at every 3 weeks against MLAB SMART's every 13 months. SJ also leads on iOS requirement (11.0 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.

SJ ships an update every 3 weeks, MLAB SMART every 13 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | SJ | MLAB SMART |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (23 ratings)](https://appshunter.io/ios/app/sj-gps/id1238596836/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 13 months |
| Monetization | Free | — |
| Size | 242 MB | 201 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Guangdong Shiji Technology Co.,Ltd.](https://appshunter.io/developer/1405540461) | [Importadora y Exportadora H.J. Ltda.](https://appshunter.io/developer/1611563276) |

## What reviewers say

### SJ

[App page](https://appshunter.io/ios/app/sj-gps/id1238596836)

Control a toy quadrocopter using Wi-Fi and receive real-time video feedback. This application is compatible with a range of iOS devices and versions.

**Highlights:** Wi-Fi quadrocopter control, Real-time video transfer, Compatible with multiple iOS versions, Supports various iPhone models

**Features:** macOS Compatibility

**In-app purchases:** none


### MLAB SMART

[App page](https://appshunter.io/ios/app/mlab-smart/id1611563274)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SJ free?

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

### Is MLAB SMART free?

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

### Do SJ or MLAB SMART have ads?

Neither SJ nor MLAB SMART shows ads.

### Which is updated more often, SJ or MLAB SMART?

SJ ships an update every 3 weeks, and MLAB SMART every 13 months. Most recently, SJ was updated on October 24, 2026 and MLAB SMART on October 14, 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.*