S vs USB Camera
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
S
This app allows you to view live images from a USB camera connected to a WiFi station wirelessly. You can capture, record, freeze, and annotate the video feed, and even switch to your iOS device's camera.
- Wireless USB camera transfer
- Live image preview
- Capture and record video
- Freeze and draw on video
- Switch camera resolutions
- Adjust image quality (brightness)
- Use iOS device camera
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S-Viewer is an APP for WiFi station that is USB camera transfer to wireless. It is available for iOS series devices. It can pre-view the live image from WiFi station with USB camera that has MJPEG video stream output and capture, record, freeze, drawing, mark the symbols or the words, switch camera resolutions, set image quality as like brightness in this APP. The APP also can switch to iOS mobile device camera.
USB Camera
Connect USB webcams or capture cards to your iOS device to record video, capture snapshots, or stream live. It can also function as a wireless IP camera for security monitoring with browser access and bi-directional audio. Supports multi-camera setups and loop recording.
- Connect USB webcams and capture cards
- Record video and capture snapshots
- Wireless IP camera functionality
- Live streaming via RTMP/SRT
- Multi-camera support with PIP
- Loop recording with auto-segmentation
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"USB Camera" can let your iOS device connect to USB WebCam or video capture card. You can record video or capture snapshot, OR turn your phone into a wireless IP Camera via build-in RTSP/RTSPS and HTTP/HTTPS Server for security monitoring WITH Bi-directional audio support, you can use your browser to view, of course, include "IP Camera" App. "USB Camera" can push the video and audio to RTMP/SRT live media server (e.g. Push to YouTube, Facebook), and use for network broadcast. It supports the rtmps security protocol and SRT protocol and it can also push the media to multiple media server at the same time. It also supports HEVC/AV1 over RTMP and can be used for YouTube Live currently. It supports Multi Cam feature which allows you to connect multiple external USB cameras or video capture cards simultaneously and process into PIP video then transfer. It supports loop-recording. It can set auto-segment when recording and auto-delete old video archives when no enough storage.
Screenshots
Verdict
The clearest difference is ads: S at none against USB Camera's shown. S also leads on rating (3.0 vs 2.7) and monetization model (free vs ad-supported). USB Camera's advantage is update cadence (fortnightly vs monthly) and ratings volume (10 vs 2). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
S holds the better App Store score, 3.0 against 2.7. That said, the two scores are not equally well evidenced: USB Camera has 10 ratings behind it against 2, so its average is the more settled of the two.
S ships an update monthly, USB Camera fortnightly. The most recent releases landed on September 19, 2026 and September 25, 2026 respectively.
| Parameter | S | USB Camera |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | 2.7 (10 ratings) |
| Positive reviews | — | 42.9% of reviews |
| Number of ratings | 2 | 10 — better |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 6.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | TSUNG JUNG HU | 垚 沈 |
Customer experience
S
USB Camera
In-app purchases
S
No in-app purchases
USB Camera
No in-app purchases









