HomeAppsHealth & FitnessPeakDay Fertility TrackerApps like PeakDay Fertility Tracker Here are some great alternatives to PeakDay Fertility Tracker by Fertility Science Institute : OvuView: Ovulation & Fertility ★3.7 Ovulation Calendar & Fertility ★4.8 Period Tracker & Ovulation App ★3.9 Fertility Friend Ovulation App ★4.6 Period Calendar Period Tracker ★4.9 Period Tracker & Fertile days ★4.1 My Period : Period Tracker ★4.5 Ladytimer Period Calendar ★4.3 Charting App ★4.0 NFP Charting ★3.7 Period Tracker - My Calendar ★4.7 Period Tracker Ovulation Cycle ★4.4 Clover-Period & Cycle Tracker ★4.4 Ovulation & Fertility Schedule ★4.0 Ovulation: Period Tracker ★4.6 Period Tracker Ovulation Cycle ★4.3