Lady Technologies is the company behind kegg, a fertility monitor that tracks cervical fluid. The small device is inserted into the vagina for daily readings and also works as a pelvic floor exercise tool. Its app builds a view of the fertile window.

How it works
Two smooth electrodes measure electrical impedance within cervical fluid. The balance of water and electrolytes in this fluid changes across the hormonal cycle. Kegg records the daily pattern and uses past readings to identify when the fluid is most supportive of conception. Each measurement takes about two minutes and syncs to the app.

Key considerations
Reliable patterns require daily use, correct insertion and enough cycle data. Infections, medication, recent intercourse and irregular cycles may influence readings. Kegg does not measure hormones directly, confirm ovulation or provide contraception. Users with symptoms or fertility concerns should seek clinical advice.