Nobody knows what their own face looks like.

Mirrors flip you. Selfies distort you. Friends are polite. So most people carry a vague feeling that something is off without a single number to point at. Symmi started as a symmetry checker for exactly that feeling: put the two halves of your face side by side and measure the difference instead of squinting at it.

Since then the app has grown into a full measurement tool. It places 478 landmarks, computes 19 readings in degrees and ratios against ideal ranges, and on Face ID iPhones builds a 3D model of your face from the TrueDepth camera. Every reading is tagged as structure, which training will not move, or as muscle, fluid and posture, which it can. The plan works on the second group and never pretends about the first.

One rule shaped every decision: nothing leaves the phone. Landmarking, measuring, the 3D model and the skin analysis all run on your device. You don't need an account to scan, and you can delete everything from Settings.

Symmi is developed by TidalAurum LLC, an AI technology company that builds consumer applications around on-device computer vision. Our position is simple: the model should do the measuring, and the person should keep the data. We ship analysis that runs on the phone, report numbers that can be measured again, and label what a photo can and cannot tell you.

Symmi is the company's face-analysis product, available for iPhone and Android. It is a wellness and self-care tool, not a medical device, and it does not diagnose or treat any condition.