Here is a fertility tracking system that combines with your smartphone to predict your fertility. It comes with a clip-on attachment for your phone to hold test strips in front of the camera. The companion app does the measuring and tracking.
Eveline uses your smartphone camera and light to measure changes in luteinizing hormone. The kit comes with a test holder, LH urinary test strips, and iOS/Android apps. Expected to ship in July.[where to get it]
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