# SJ vs CSJ GPS

The clearest difference is rating: SJ at 3.7 against CSJ GPS's 3.5. On price, review sentiment, ratings volume and update cadence there is nothing between them.

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

SJ holds the better App Store score, 3.7 against 3.5. Both are backed by a comparable volume of ratings — 23 and 14 respectively. Written reviews point the same way: 33% of SJ's written reviews are positive against 27% of CSJ GPS's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SJ | CSJ GPS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (23 ratings)](https://appshunter.io/ios/app/sj-gps/id1238596836/reviews)** | [3.5 (14 ratings)](https://appshunter.io/ios/app/csj-gps/id1459989511/reviews) |
| Number of ratings | **23** | 14 |
| Positive reviews | **33.3% of reviews** | 27.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 242 MB | 91 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangdong Shiji Technology Co.,Ltd.](https://appshunter.io/developer/1405540461) | [泽生 王](https://appshunter.io/developer/1322937991) |

## 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


### CSJ GPS

[App page](https://appshunter.io/ios/app/csj-gps/id1459989511)

Control your aircraft's flight and view real-time camera feeds on your mobile device. Capture photos and videos, utilize track mode, perform 360° rolls, and experience immersive VR mode.

**Highlights:** Real-time camera feed, Photo and video recording, Track mode, 360° roll over, VR mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SJ free?

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

### Is CSJ GPS free?

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

### Which has better reviews, SJ or CSJ GPS?

SJ is rated higher. SJ averages 3.7 out of 5 from 23 ratings, while CSJ GPS averages 3.5 from 14 ratings.

### Do SJ or CSJ GPS have ads?

Neither SJ nor CSJ GPS shows ads.

### Which is updated more often, SJ or CSJ GPS?

SJ ships an update every 3 weeks, and CSJ GPS every 3 weeks. Most recently, SJ was updated on November 2, 2026 and CSJ GPS on November 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.*