3 vs EXTRAVIS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3
Connect smart devices to your network for video recording and receive detection alerts. Enhance your home security by integrating additional smart devices. Get support via email for any assistance needed.
- Smart device network connection
- Video recording
- Detection alerts
- Security enhancement
- Additional device integration
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The 3-Link app links smart device to your network for video recording and detection alerts. Learn how to enhance your security with additional smart devices.If any help need, please feel free to contact us at support@3-link.com
EXTRAVIS
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EXTRAVIS APP is a mobile application developed for EXTRAVIS robot vacuum and mop. Through EXTRAVIS, you can achieve: Real time viewing of the current status of robots, planning and management of cleaning tasks, remote control of robots, and easy network and device sharing.
Screenshots
Verdict
The clearest difference is in-app purchases: EXTRAVIS at none against 3's 15. EXTRAVIS also leads on iOS requirement (13.0 vs 15). 3's advantage is update cadence (every 3 weeks vs every 21 months). On price, ads and device support 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. 3 sells 15 one-off in-app purchases. EXTRAVIS asks for nothing beyond the download.
3 ships an update every 3 weeks, EXTRAVIS every 21 months. The most recent releases landed on September 10, 2026 and September 11, 2026 respectively.
| Parameter | 3 | EXTRAVIS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (69 ratings) — better | — |
| Positive reviews | 59.3% of reviews | — |
| Number of ratings | 69 — better | — |
| Update frequency | Every 3 weeks — better | Every 21 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15 | 13.0 — better |
| Further details — not scored | ||
| Size | 106 MB | 204 MB |
| Age rating | 17+ | 12+ |
| Developer | Shenzhen Huayi Video Technology Co., Ltd. | Linksmart Technology(Zhongshan) Co., Ltd. |
Bugs and requests
3
Reported bugs
15 issues- App crashes when creating an account
- Login button is out of view and not clickable
- Cannot log in after app update
- App doesn't recognize connected devices
- Data update failed and cameras lost
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- Subscription link fails
- Custom zone monitoring not functional
- Camera resetting daily
- App crashes when requesting verification code
- Cannot view recorded events
- Keyboard covers 'OK' button during setup
- Cannot delete camera
- App does not scroll down to click sign in button
- Cannot view alerts
- Login page changed, no 'OK' button
Requested features
6 requests- Allow multiple users to be logged in simultaneously
- Fix scrolling issue on login screen
- Improve motion detection accuracy
- Allow manual recordings to be saved to SD card
- Provide clear explanations for settings
Show 1 moreShow fewer
- Make subscription more flexible (e.g., family plan)
EXTRAVIS
Not enough reviews yet to summarise bugs or requests.
In-app purchases
3
- cloud product 1$0.29
- cloud 8.49$8.49
- cloud 15.99$15.99
Show 12 moreShow fewer
- cloud 24.99$24.99
- cloud single device discount$29.99
- cloud 34.99$34.99
- cloud 39.99$39.99
- cloud single device$49.99
- cloud 59.99$59.99
- cloud 69.99$69.99
- cloud no account$79.99
- cloud 89.99$89.99
- cloud 99.99$99.99
- cloud account no discount$129.00
- cloud 139.99$139.99
EXTRAVIS
No in-app purchases
