Contact Lens Tracker

Anybody who wears monthly or biweekly lenses knows the problem. You put a fresh pair in, you fully intend to remember the date, and three weeks later you are staring at a mirror doing arithmetic you cannot possibly get right. Wearing a lens too long is uncomfortable at best; replacing it early wastes money every single month.

One glance, two answers

Contact Lens Tracker puts a countdown on your wrist — one ring for the left eye, one for the right. Days remaining in the middle, the exact swap date underneath, and the number of pairs still in the box beside it. Raising your wrist takes two seconds and answers the whole question.

Because eyes do not stay in sync

Most trackers assume both lenses start and end together. In practice one tears, one gets dropped down the sink, and from that point the pair is out of step for good. Here each eye keeps its own schedule, its own stock and its own history, which is the only version of this that survives contact with real life.

Your prescription, on your wrist

Power, cylinder, axis, diameter, brand and wear duration are stored for each eye — including proper support for toric lenses. When you are reordering or someone asks what you wear, the answer is on the watch instead of on a box at home.