BJ vs 4DRC PRO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BJ
Control your drone and view its camera feed in real-time. Adjust throttle, take photos, and record videos directly from your phone.
- Real-time drone control
- Live camera feed display
- Photo capture
- Video recording
- Throttle adjustment
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Through the real-time connection with the uav through WIFI, the pictures taken by the uav will be displayed, and the phone will control the direction of the aircraft throttle, shoot the pictures of the uav and record the video
4DRC PRO
Control your drone with real-time video feedback. Capture photos and videos, and operate the aircraft's movement. Offers various engaging functionalities for drone pilots.
- Real-time image transmission
- Aircraft operation control
- Remote photo and video capture
- Real-time drone movement control
- Multiple interesting play modes
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This is an application for real-time image transmission and operation control of aircraft through wifi connection. It can take photos and videos remotely. It can also control the movement of the drone in real time, and there are many interesting ways to play
Screenshots
Verdict
BJ and 4DRC PRO both sit at 2.8 stars, but that hides the real split: 50% of BJ's written reviews are positive against 24% of 4DRC PRO's. BJ also leads on iOS requirement (12.0 vs 15.6). 4DRC PRO's advantage is ratings volume (196 vs 9). On price, rating, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 2.8 for BJ against 2.7 for 4DRC PRO. That said, the two scores are not equally well evidenced: 4DRC PRO has 196 ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 50% of BJ's written reviews are positive against 24% of 4DRC PRO's.
BJ ships an update every 5 weeks, 4DRC PRO every 6 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.
| Parameter | BJ | 4DRC PRO |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (9 ratings) — better | 2.7 (196 ratings) |
| Positive reviews | 50.0% of reviews — better | 24.3% of reviews |
| Number of ratings | 9 | 196 — better |
| Update frequency | Every 5 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 167 MB | 195 MB |
| Age rating | 4+ | 4+ |
| Developer | 介甲 张 | ShanTou City Vison Electronictechnology Co., Ltd. |
Customer experience
BJ
4DRC PRO
Bugs and requests
BJ
Not enough reviews yet to summarise bugs or requests.
4DRC PRO
Reported bugs
11 issues- App fails to connect to drone via WiFi
- Horizontal and compass calibration buttons don't work
- Camera freezes at certain altitudes and distances
- App becomes unresponsive after connection
- Video recording doesn't save properly
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- App crashes on iPhone XR, iPhone 11, iPhone 12, and other iOS devices
- WiFi connection drops after few minutes of flight
- VR mode buttons non-functional
- App requires restart to regain functionality
- Drone uncontrollable during calibration process
- Photo/video capture buttons unresponsive
Requested features
7 requests- Bottom camera access and switching capability
- Tutorial or guide for app functionality
- VR mode functionality improvements
- Better English language support and instructions
- Clearer setup and pairing instructions
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- Separate landing button instead of toggle
- Improved app responsiveness and button functionality
In-app purchases
BJ
No in-app purchases
4DRC PRO
No in-app purchases
