The short version
Iriun does one thing and does it simply: it turns your phone into a webcam for your computer, free, with no account required. For most people replacing a poor laptop camera, that's exactly enough.
Setup
Installation is quick — a desktop client, a phone app, same Wi-Fi network, done. The friction points are the usual ones for this category: camera permissions on macOS, and remembering to launch the client before your video app. Neither is a dealbreaker.
Video quality
Because it uses your phone's sensor, the image is typically sharper than a built-in webcam, up to 1080p. Quality over Wi-Fi depends on signal strength; USB is steadier. [PLACEHOLDER: confirm maximum resolution and any 4K support.]
Reliability
On a solid network or USB, it's stable. On weak Wi-Fi you'll see the occasional stutter — expected for any wireless camera stream, and easily fixed by going wired.
Pros & cons
| Pros | Cons |
|---|---|
| Free, no account | Wi-Fi quality affects latency |
| Sharper than most laptop cams | Ties up your phone during calls |
| Works in any camera app | Needs a mount or stand |
| Win / Mac / Linux / iOS / Android | [PLACEHOLDER: free-tier limits, if any] |
Verdict
If your built-in webcam disappoints and you own a reasonably modern phone, Iriun is an easy recommendation — it's free, quick to set up, and works across platforms. Heavy streamers may want to compare it against alternatives for specific features, but as a no-cost upgrade it's hard to fault.