S vs i
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.
i
Transform your smartphone into a powerful magnification tool. Observe and record microscopic details with your phone's camera and a macro lens. Measure objects with a scale bar and add notes to your digital micrographs.
- Professional magnification tool
- Record digital micrographs
- Optical magnification
- Up to 10x digital zoom
- Scale bar for measurement
- Add notes and remarks
- Direct photo sharing
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Use this app to work with smartphone microscopes or any phone macro-lens as an professional magnification tool to observe tiny objects and record digital micrographs with your Phone. Features: Capture of photos with tiny objects as you do with sophisticated optical microscope Optical magnification ratio depending on your smartphone microscope Up to 10x digital magnification in App Scale bar for objects measurement which can be toggled on/off Automatic recording of shooting date and time Allow you to add notes and remarks to your picture Direct sharing of photos with email, message. Attach smartphone microscope to your Phone and convert it into a convenient portable microscope. Capture and save micrographs. Zoom in on photos and tag pictures with comments. Access your photos from your i-Seeing app, email them to your computer and colleagues. More detail at: www.mobile-scope.com
Screenshots
Verdict
The clearest difference is update cadence: S at monthly against i's every 14 months. S also leads on rating (3.0 vs 2.7) and iOS requirement (6.0 vs 16.0). i's advantage is ratings volume (35 vs 2). On price, ads, in-app purchases and monetization model 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: i has 35 ratings behind it against 2, so its average is the more settled of the two.
S ships an update monthly, i every 14 months. The most recent releases landed on September 19, 2026 and September 18, 2026 respectively.
| Parameter | S | i |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | 2.7 (35 ratings) |
| Positive reviews | — | 20.0% of reviews |
| Number of ratings | 2 | 35 — better |
| Update frequency | Monthly — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 6.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 12 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | TSUNG JUNG HU | Shanghai Qingying Electronic Technology LLC |
Customer experience
S
i
In-app purchases
S
No in-app purchases
i
No in-app purchases
