S vs USB
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
This application connects to WIFI image transmission equipment, enabling wireless image data transfer between cameras and iOS devices. It allows for real-time, free transmission of visuals from anywhere, anytime.
- WIFI image transmission
- Wireless connection to iOS devices
- Real-time image data transfer
- Anytime, anywhere access
- Free wireless transmission
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USB-VIEW application software is a combination of WIFI image transmission equipment using the software. with WIFI settings to achieve the camera through wireless WIFI and IOS system terminal equipment connection of application software.allows users to truly achieve anytime, anywhere,free wireless transmission of image data.
Screenshots
Verdict
The clearest difference is rating: S at 3.0 against USB's 2.0. S also leads on iOS requirement (6.0 vs 13.0). USB's advantage is ratings volume (29 vs 2). 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
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 2.0. That said, the two scores are not equally well evidenced: USB has 29 ratings behind it against 2, so its average is the more settled of the two.
S ships an update monthly, USB every 5 weeks. The most recent releases landed on September 19, 2026 and October 6, 2026 respectively.
| Parameter | S | USB |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | 2.0 (29 ratings) |
| Positive reviews | — | 18.2% of reviews |
| Number of ratings | 2 | 29 — better |
| Update frequency | Monthly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 6.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 12 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | TSUNG JUNG HU | 志强 童 |
Customer experience
S
USB
In-app purchases
S
No in-app purchases
USB
No in-app purchases
