Comparison

TRENDnet Sentinel vs OP

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

Head to head
About

TRENDnet Sentinel

This application allows users to remotely manage TRENDnet surveillance cameras and NVRs. View live video feeds, playback recorded footage, capture screenshots, and share files directly from your mobile device.

Highlights
  • Remote camera management
  • Live video viewing
  • Playback recorded video
  • Screenshot capture
  • File sharing
Features
Read full description

Managed your TRENDnet surveillance cameras and NVRs with the free TRENDnet Sentinel mobile app. The Sentinel mobile app is specifically designed for use with TRENDnet IP cameras and network video recorders. Easily view and record remote live video from multiple TRENDnet IP cameras. Playback recorded video, take screenshots, and conveniently share files directly through the app.

About

OP

Read full description

OP-Link is a home security monitoring app that helps connect and manage webcams: dedicated to smarter surveillance with support for real-time video viewing, playback, cloud storage, voice intercom and mobility detection. After connecting the device on the mobile APP, users can view the screen viewed by the monitoring device beyond the trunk or even further away

Screenshots

TRENDnet Sentinel4 screens
OP3 screens

Verdict

The call

The clearest difference is update cadence: OP at every 2 months against TRENDnet Sentinel's every 9 months. OP also leads on iOS requirement (13.2 vs 15.1). TRENDnet Sentinel's advantage is device support. On price and in-app purchases 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

TRENDnet Sentinel ships an update every 9 months, OP every 2 months. The most recent releases landed on September 9, 2026 and May 17, 2026 respectively.

Scorecard3 real differences · 7 level
TRENDnet Sentinel versus OP: the parameters behind the verdict, then further details
ParameterTRENDnet SentinelOP
PriceFreeFree
Rating1.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 9 monthsEvery 2 months — better
AdsNo—
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — better—
Requires iOS15.113.2 — better
Further details — not scored
Size49 MB85 MB
Age rating4+4+
DeveloperTRENDnet Inc.HAIXINDA TRADING LIMITED

In-app purchases

None

TRENDnet Sentinel

No in-app purchases

None

OP

No in-app purchases

Questions

Is TRENDnet Sentinel free?
TRENDnet Sentinel is free to download, with no in-app purchases.
Is OP free?
OP is free to download, with no in-app purchases.
Which is updated more often, TRENDnet Sentinel or OP?
TRENDnet Sentinel ships an update every 9 months, and OP every 2 months. Most recently, TRENDnet Sentinel was updated on September 9, 2026 and OP on May 17, 2026.

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