HomeAppsHealth & FitnessPeakDay Fertility TrackerApps like PeakDay Fertility Tracker Here are some great alternatives to PeakDay Fertility Tracker by Fertility Science Institute : Period Tracker and Ovulation ★4.0 OvuView: Ovulation & Fertility ★3.8 Ovulation Calendar & Fertility ★4.8 Period Tracker & Ovulation App ★3.6 Fertility Friend Ovulation App ★4.6 Period Calendar Period Tracker ★4.9 Period Tracker & Fertile days ★4.1 My Period : Period Tracker ★4.5 Charting App ★4.3 NFP Charting ★3.7 Period Tracker - My Calendar ★4.6 Ladytimer Period Calendar ★4.2 Period Tracker Ovulation Cycle ★4.5 Clover-Period & Cycle Tracker ★4.5 Ovulation & Fertility Schedule ★4.0 Period Tracker Ovulation Cycle ★4.3