Comparison

ZestCam vs ThirdEye

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

Head to head
About

ZestCam

This app provides a clean, professional camera feed for live streaming on OBS and other platforms. It offers zero UI interference, dual-mode output via USB capture card or SRT wireless streaming, and minimalist controls for seamless operation. Enjoy pro-grade video quality with hardware-level stability.

Highlights
  • Ultra-clean camera feed with zero UI interference
  • USB capture card output with low latency
  • SRT wireless streaming over LAN
  • Real-time resolution switching (4K60/4K30/1080P60)
  • One-tap front/back camera switching
  • Gesture controls for UI management
  • Hardware-level stability with 60 fps locked
Features
Read full description

ZestCam turns your iPhone into a professional camera for OBS. Stream a clean 4K picture over Wi‑Fi with SRT, or send it over USB and HDMI. No watermark and no on-screen controls in your shot. TWO WAYS TO CONNECT • Wireless SRT: stream over your local Wi‑Fi straight into an OBS Media Source. Encrypted, low latency, no capture card needed. • USB and HDMI: connect the iPhone to your computer or a capture card. The screen becomes a clean full-screen feed and the controls hide themselves. On HDMI, the phone's own screen dims. PRO IMAGE QUALITY • Up to 4K at 60 fps, plus 4K30, 1080p60 and 1080p30, depending on your iPhone. • Picks the best camera format automatically, with video stabilization. • H.264 or HEVC. HEVC uses about a third less bandwidth at the same quality. • The picture follows how you hold the phone, in landscape or portrait. AUDIO • Turn on the microphone to send sound to OBS along with the picture. CAMERA CONTROLS • Tap to focus and expose. Long-press to lock AE/AF. Slide to adjust exposure. • Pinch to zoom up to 5×, moving smoothly between the ultra-wide and wide lenses. • Switch between the front and back cameras in one tap. BUILT TO STAY LIVE • Reconnects automatically after short network drops. • Lowers the bitrate when Wi‑Fi gets busy and raises it again when it clears. • Brings the picture back after calls and other interruptions. • Steps down from 4K to 1080p if the phone gets too hot, so the feed keeps going. • Keeps the screen awake while you're live. • Shows bitrate, frame rate, latency and packet loss on screen. SET UP IN A MINUTE 1. Enter your computer's IP address. 2. Copy the link, share it, or show it as a QR code, then paste it into an OBS Media Source. 3. Tap Start streaming. A built-in guide walks you through it, and every error tells you what went wrong and how to fix it. GREAT FOR Live streaming, online classes, church services, meetings, podcasts, tutorials, product demos and multi-camera setups. Works with OBS Studio on Mac and Windows. SUBSCRIPTION ZestCam Pro unlocks every feature. Choose a yearly subscription with a free trial, or a one-time lifetime purchase. Payment is charged to your Apple Account when you confirm. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in Settings > [your name] > Subscriptions. Support: qiueye@gmail.com Privacy Policy: https://waynerqiu.github.io/ios_privacy_policy/ZestCam.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ThirdEye

Transform old iPhones or iPads into a secure home monitoring system without cloud storage. View live feeds locally and privately from anywhere, anytime. Ideal for baby monitoring, pet cams, and home security.

Highlights
  • No cloud storage, local privacy
  • Direct local peer-to-peer connection
  • Turn old phones into security cameras
  • Baby monitor, pet cam, home security
  • Simple setup, no account needed
  • iCloud sync across devices
Features
Read full description

Three-Eye Monitor is a remote monitoring app specifically designed for home environments. With just two iPhones or iPads, you can instantly set up your own home security system—no extra hardware required, and no complicated configurations. Whether you're checking on a sleeping baby, watching your pets, or securing your home, Three-Eye Monitor allows you to view live feeds from anywhere, at any time. —— Why Choose Three-Eye Monitor? —— 【No Cloud Storage, More Secure】 Unlike traditional security apps, Three-Eye Monitor does not rely on cloud servers. Your video and data stay exclusively on your devices—no uploads, no sharing, total privacy. 【Direct Local Connection】 Supports peer-to-peer (P2P) local connections between devices, providing ultra-low latency and stable real-time streaming. 【Turn Old Phones into Security Cameras】 Give your idle iPhone or iPad a second life. Easily transform old devices into powerful home security cameras. 【Versatile Use Cases】 Baby Monitor: Keep an eye on your little one. Pet Cam: Check in on your pets while you're away. Home Security: Guard your living space 24/7. Elderly Care: Stay connected with aging family members. Small Business: Monitor your shop or office. On-the-go: Temporary remote monitoring whenever you need it. 【Simple and Intuitive】 Forget complex registrations. Start monitoring immediately without creating an account. Seamlessly sync across devices via iCloud. Just sign in with the same Apple ID, and your devices will automatically discover each other and establish a secure connection. Its clean, minimalist design makes remote viewing feel effortless and natural. —— A Privacy-First Experience —— We believe that home security should never come at the cost of your personal privacy. Three-Eye Monitor is dedicated to providing a simpler, safer, and more localized remote monitoring experience. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ZestCam4 screens
ThirdEye4 screens

Verdict

The call

The clearest difference is price: ZestCam at Free against ThirdEye's $2.99. ThirdEye's advantage is update cadence (fortnightly vs every 2 months). On rating, ratings volume, 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

ZestCam is free to download; ThirdEye costs $2.99 up front. ZestCam sells 2 in-app purchases, starting at $7.99 per year and ThirdEye sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for ZestCam against 5.0 for ThirdEye. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

ZestCam ships an update every 2 months, ThirdEye fortnightly. Both last shipped on October 24, 2026.

Scorecard2 real differences · 8 level
ZestCam versus ThirdEye: the parameters behind the verdict, then further details
ParameterZestCamThirdEye
PriceFree — better$2.99
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings11
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.615 — better
Further details — not scored
Size9 MB20 MB
Age rating4+4+
Developer明佼 张超 雷

Customer experience

ZestCam

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ThirdEye

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

ZestCam

Subscriptions1
  • ZestCam yearly$7.991 Year
One-time1
  • ZestCam Lifetime$29.99
3 purchases

ThirdEye

Subscriptions2
  • ThirdEye Pro Monthly$1.991 Month
  • ThirdEye Pro Yearly$14.991 Year
One-time1
  • ThirdEye Pro Lifetime Purchase$34.99

Questions

Is ZestCam free?
ZestCam is free to download, with in-app purchases available.
Is ThirdEye free?
ThirdEye costs $2.99, and also offers in-app purchases.
Which has better reviews, ZestCam or ThirdEye?
ZestCam and ThirdEye are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do ZestCam or ThirdEye have ads?
Neither ZestCam nor ThirdEye shows ads.
Which is updated more often, ZestCam or ThirdEye?
ZestCam ships an update every 2 months, and ThirdEye fortnightly. Most recently, ZestCam was updated on October 24, 2026 and ThirdEye on October 24, 2026.

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