Comparison

51See vs Watcher VMS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Professional P2P NVR Client

Free

📷 Photo & Video

No ratingsView app →

About

51See

This app provides a comprehensive IoT platform for smart home and industry monitoring. It includes device hardware, cloud server systems, and client solutions, with options for customized development and source code.

Highlights

Smart home and industry monitoring
Device hardware and SDK customization
Cloud server system development
Client solutions
Customizable system development

Features

Read full description

M51C平台是一个可以用应用于智能家居、行业监控的物联平台，它包括设备、云服务器系统、客户端完整解决方案。该客户端是我们为客户提供的一个通用版客户端。客户也可以基于我们的方案定制自己的系统。我们提供的服务包括：1) 设备硬件及SDK定制，包括：摄像机、RFID、智能网关；2) 云服务器系统定制开发；不同平台的定制开发及SDK，甚至包括源代码。

About

Watcher VMS

Features

Read full description

Watcher VMS can be connected via wireless network or mobile data traffic.It implements previewing real-time image, playbacking remote video,pushing alarm message and PTZ control function. Watcher VMS software supports TCP or P2P connection mode to connect the device.If your mobile phone is located in a private LAN, you may need to do port mapping for the data port of the device.

Screenshots

51See3 screens

Watcher VMS4 screens

Verdict

The call

The clearest difference is update cadence: 51See at every 3 weeks against Watcher VMS's every 2 months. 51See also leads on iOS requirement (8.0 vs 10.0). On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

51See ships an update every 3 weeks, Watcher VMS every 2 months. The most recent releases landed on October 1, 2026 and September 10, 2026 respectively.

Scorecard2 real differences · 6 level

51See versus Watcher VMS: the parameters behind the verdict, then further details
Parameter	51See	Watcher VMS
Price	Free	Free
Positive reviews	100.0% of reviews	—
Update frequency	Every 3 weeks — better	Every 2 months
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	8.0 — better	10.0
Further details — not scored
Size	33 MB	11 MB
Age rating	4+	4+
Developer	大帅李	Watcher Products

In-app purchases

None

51See

No in-app purchases

None

Watcher VMS

No in-app purchases

Questions

Is 51See free?

51See is free to download, with no in-app purchases.

Is Watcher VMS free?

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

Do 51See or Watcher VMS have ads?

Neither 51See nor Watcher VMS shows ads.

Which is updated more often, 51See or Watcher VMS?

51See ships an update every 3 weeks, and Watcher VMS every 2 months. Most recently, 51See was updated on October 1, 2026 and Watcher VMS on September 10, 2026.