Noga

Noga is a precise taharat hamishpacha tracker built for observant Jewish women who want to manage their niddah cycle simply and privately.

What it does: Log period days, hefsek tahara, shiva nekiyim counting, and mikvah night, all in one place. Noga automatically calculates upcoming onot based on all three halachic calculations: onah beinonit, ona hachodesh, and onah haflagah.

Key features: • Visual monthly calendar with color-coded markers for every stage • Automatic onot predictions: onah beinonit, ona hachodesh, and haflagah • Or Zarua support — separates the preceding onah with a split-cell visual indicator • Veset kavua support (by interval or by Hebrew date) • Ketem tracking (stain, hefsek tahara, clean day count, mikvah) • Hebrew dates displayed alongside Gregorian • No account, no cloud. Your data never leaves your device.

Built on halacha: The calculations in Noga were built carefully according to halacha, in consultation with rabbinic authorities. A rabbinic certification is available inside the app. The app is a memory aid, not a halachic ruling. For any question, consult your rabbi.