Connected Ovulation Test Efficacy Study

Inclusion Criteria: * Actively trying to conceive * At least 2 regular consecutive cycles since last pregnancy/ miscarriage/ or since stopping breastfeeding * Willing to use their own smartphone for the duration of this study and to download and install the study app * Willing to disclose their pregnancy status and provide urine samples to test markers related to pregnancy and fertility * Have internet access on their phone for the duration of the study * Willing to give informed consent and comply with the investigational procedures Exclusion Criteria: * Currently or previously employed by SPD, Alere, Abbott, Unipath or P\&G, or affiliates * Has an immediate relative\* currently or previously employed by SPD, Alere, Abbott, Unipath or P\&G or affiliates * There is a reason why the volunteer should not get pregnant e.g. they are taking a medication or have a medical condition which means they should not get pregnant * Trying to conceive for more than 6 months (if less than 35 years old) and more than 3 months (if 35 years old or over) * Has been diagnosed with Polycystic Ovarian Syndrome (PCOS) * Has PCOS symptoms: very irregular cycles, hirsutism * Using or has previously used infertility medications or hormone replacement therapy containing hCG or LH (e.g Pregnyl) * Are taking clomiphene citrate or other ovulation induction drugs * Using any treatment which may affect the menstrual cycle (e.g. the contraceptive pill) * Currently pregnant or breastfeeding * Peri- or post-menopausal, e.g. experiencing symptoms: Irregular menstrual periods, hot flushes, night sweats, sleep disturbances, and mood swings * Have abnormal liver or kidney function * Taking medication containing tetracycline * Using or undergoing any other medical treatment for fertility such as ovulation drugs, artificial insemination and assisted fertility such as IVF or ICSI * Has a phone that is known to be incompatible with COTS