Comparison

TDSEE vs MERCUSYS

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

Head to head
About

TDSEE

This application provides remote video monitoring capabilities for various smart devices. It offers features like smart tracking, alarm notifications, and two-way audio for comprehensive surveillance in homes, businesses, and warehouses.

Highlights
  • Video monitoring
  • Smart tracking
  • Alarm notification
  • Two-way audio
  • Video playback
  • Remote access
Features
Read full description

TDSEE is a super easy-to-use application for smart monitoring. It integrates various features, such as video monitoring, smart tracking, alarm notification, two-way audio, video playback, and so on. Together with the managed smart devices , it can be widely used in homes, enterprises, shops, machine rooms, and warehouses, meeting users' demand for remote video monitoring. If you have any questions, please do not hesitate to contact with our technical support mailto:tendasecurity@tenda.cn. Best regards.

About

MERCUSYS

Easily set up and manage your mesh Wi-Fi system. The app guides you through installation, helps optimize unit placement for better coverage, and provides comprehensive control over your network. Enjoy faster, more reliable Wi-Fi throughout your home.

Highlights
  • Mesh Wi-Fi setup
  • Network management
  • Device connection monitoring
  • Guest network sharing
  • Website access restriction
  • Wi-Fi scheduling for devices
  • Device Wi-Fi priority control
Features
Read full description

To set up your Halo/Router network, simply plug one of your Halo/Router units into your modem and follow the instructions in the MERCUSYS app. The app also helps you find the best spots in your home to place additional Halo units. Once your Halo/Router network is up and running, you can enjoy faster, stronger Wi-Fi connections that won't drop out, even when you're moving from room to room. Plus, you can manage your entire Halo Whole Home Mesh Wi-Fi System right from the MERCUSYS app,including: - Sharing your guest network with visitors - Viewing which devices are connected to your Wi-Fi - Restricting access to websites of your choosing - Setting a time restriction and pause the Wi-Fi on kids' devices - Controlling when certain devices have Wi-Fi access - Picking which devices get Wi-Fi priority - Adding a family member as a network manager to help you monitor your network MERCUSYS App has met EAA requirements. View compatible list of MERCUSYS: https://www.mercusys.com/support/mercusys-app/#compatible-products Note: Please make sure you have updated to the latest firmware that supports MERCUSYS. Privacy Policy: https://www.mercusys.com/en/app/privacy#sec_a Terms of Service: https://www.mercusys.com/en/app/privacy#sec_b

Screenshots

TDSEE4 screens
MERCUSYS4 screens

Verdict

The call

The clearest difference is review sentiment: MERCUSYS at 89% against TDSEE's 21%. MERCUSYS also leads on rating (4.8 vs 3.5) and ratings volume (793 vs 51). On price, update cadence, ads 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. TDSEE sells 19 one-off in-app purchases and MERCUSYS sells 8 in-app purchases, starting at $3.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

MERCUSYS holds the better App Store score, 4.8 against 3.5. That said, the two scores are not equally well evidenced: MERCUSYS has 793 ratings behind it against 51, so its average is the more settled of the two. Written reviews point the same way: 21% of TDSEE's written reviews are positive against 89% of MERCUSYS's.

UpkeepUpdate frequency

TDSEE ships an update fortnightly, MERCUSYS every 3 weeks. The most recent releases landed on October 22, 2026 and October 27, 2026 respectively.

Scorecard3 real differences · 7 level
TDSEE versus MERCUSYS: the parameters behind the verdict, then further details
ParameterTDSEEMERCUSYS
PriceFreeFree
Rating3.5 (51 ratings)4.8 (793 ratings) — better
Positive reviews20.8% of reviews89.1% of reviews — better
Number of ratings51793 — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better14.0
Further details — not scored
Size122 MB764 MB
Age rating4+4+
DeveloperShenzhen Tenda Technology Co.,Ltd.MERCUSYS Technologies Co., Ltd.

Customer experience

TDSEE

All ratings49 ratings
Positive57.1%
Neutral12.2%
Negative30.6%
Written reviews106 reviews
Positive20.8%
Neutral19.8%
Negative59.4%

MERCUSYS

All ratings761 ratings
Positive96.5%
Neutral1.4%
Negative2.1%
Written reviews1,105 reviews
Positive89.1%
Neutral3.2%
Negative7.7%

User reviews

TDSEE

From 51 App Store ratings

What we love

  • 📹 Clear and bright video quality
  • 🌙 Excellent night vision capability
  • ⚡ Easy initial setup and installation
  • 🔄 Remote camera control and management
  • 🎥 Good recording and playback features

Room to improve

  • 🐛 Frequent app crashes and freezes
  • 📡 Constant connectivity and offline issues
  • ⚠️ False alarm notifications (motion/pet detection)
  • 💸 Expensive cloud storage subscription
  • 📱 Poor iPad/tablet optimization

MERCUSYS

From 793 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Fast and reliable
  • 💡 Helpful app features
  • 🔒 Good security and parental controls
  • 🌐 Excellent WiFi coverage and connectivity

Room to improve

  • 🐛 Occasional app crashes or bugs
  • 🔌 Limited functionality in certain modes
  • 📱 App could use more customization options
  • 🔍 Difficulty identifying connected devices

Bugs and requests

TDSEE

Reported bugs

17 issues
  • App crashes on microphone activation
  • Login verification loops and account recognition failures
  • QR code scanning not working
  • Camera shows offline despite being online
  • Video playback shows 'no video' despite recordings existing
Show 12 more
  • Full-screen mode causes image rotation and freezing
  • App freezes when opening multiple cameras
  • Slow or infinite loading when accessing camera feeds
  • Alarm videos fail to load or display
  • App crashes after recent iOS/Android updates
  • Camera connection drops after updates
  • Notifications sent from disconnected cameras
  • PTZ camera controls not functioning properly
  • Image loading stuck on black screen
  • Two-way audio cuts out over mobile data
  • Album/recordings disappear after updates
  • Device turn-off button missing after updates

Requested features

16 requests
  • iPad/tablet optimized version
  • Multi-camera grid/mosaic view
  • Picture-in-picture mode
  • Automated scheduling with day-of-week selection
  • Multiple cloud storage provider options
Show 11 more
  • Desktop/PC application support
  • Fast-forward and frame-by-frame playback
  • Privacy mode/camera disable button
  • Customizable notification sounds
  • Screen timeout prevention option
  • Keyboard shortcuts for quick actions
  • PIN code protection for app access
  • Multi-device simultaneous access
  • Adjustable two-way audio volume
  • Automatic multi-camera display
  • Scene and automation creation

MERCUSYS

Reported bugs

3 issues
  • App sometimes fails to detect or connect to router
  • Inconsistent performance after firmware updates
  • Difficulty renaming or customizing mesh nodes

Requested features

4 requests
  • Add dark mode option
  • Improve device management and monitoring
  • Implement automatic network optimization
  • Provide more granular parental control settings

In-app purchases

19 purchases

TDSEE

One-time19
  • 7 Days Detection 2 (1 month)$2.99
  • 7 Days Detection (1 month)$3.99
  • 7 Days Detection 2 (1 month)$5.99
Show 16 more
  • 30 Days Detection 2 (1 month)$6.99
  • 30 Days Detection (1 month)$9.99
  • 7 Days Detection (1year)$9.99
  • 30 Days Detection 2 (1 month)$15.95
  • 7 Days Detection (2year)$17.99
  • 7 Days Detection (6 month)$21.99
  • 7 Days Detection 2 (12 months)$22.99
  • 7 Days Detection 2 (6 months)$34.99
  • 7 Days Detection (12 month)$39.99
  • 30 Days Detection 2 (6 months)$39.99
  • 30 Days Detection (2year)$49.99
  • 7 Days Detection 2 (12 months)$59.90
  • 30 Days Detection (6 month)$59.99
  • 7 Days Detection (forever)$59.99
  • 30 Days Detection 2 (12months)$59.99
  • 30 Days Detection (12month)$99.99
8 purchases

MERCUSYS

Subscriptions8
  • Premium 1 Cam/month1 Month trial$3.491 Month
  • Premium 2 Cam/month1 Month trial$6.991 Month
  • Premium 3 Cam/month1 Month trial$10.491 Month
Show 5 more
  • Premium 10 Cam/month1 Month trial$11.991 Month
  • Premium 1 Cam/year1 Month trial$34.991 Year
  • Premium 2 Cam/year1 Month trial$69.991 Year
  • Premium 3 Cam/year1 Month trial$104.991 Year
  • Premium 10 Cam/year1 Month trial$119.991 Year

Questions

Is TDSEE free?
TDSEE is free to download, with in-app purchases available.
Is MERCUSYS free?
MERCUSYS is free to download, with in-app purchases available.
Which has better reviews, TDSEE or MERCUSYS?
MERCUSYS is rated higher. TDSEE averages 3.5 out of 5 from 51 ratings, while MERCUSYS averages 4.8 from 793 ratings.
Do TDSEE or MERCUSYS have ads?
Neither TDSEE nor MERCUSYS shows ads.
Which is updated more often, TDSEE or MERCUSYS?
TDSEE ships an update fortnightly, and MERCUSYS every 3 weeks. Most recently, TDSEE was updated on October 22, 2026 and MERCUSYS on October 27, 2026.

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