Download OIOA

OIOA is free on Android and iPhone. Install it, choose your community in Settings, and the Home screen adapts to it.

Get the app

Android: link coming soonGoogle Play iPhone: link coming soonApp Store

OIOA is for Android and iPhone. Store links appear here as soon as each listing is public.

OIOA is made for Android and iPhone (iOS). When a store listing isn’t public yet, its badge says so; we never link to a placeholder as if it were live.

After you install

  1. Open Settings and choose your community: Hindu, Islamic, Jain, Parsi or Sikh/Punjabi. You can change it at any time.
  2. Choose your method or calendar, if your community has options: a Jain sect calendar, an Islamic prayer-time method or calendar option, a Parsi calendar, or a Nanakshahi version.
  3. Allow location, or pick a city. Sunrise, prayer times, muhurat windows and the Qibla depend on where you are.
  4. Choose your language with the EN ⇄ local-language toggle.
  5. Set a few reminders for the days that matter to you.

What it asks for, and why

  • Location (optional, or choose a city): to calculate timings for where you are.
  • Notifications (optional): to deliver your reminders.
  • Contacts (optional): only if you use features that involve people you know. See contacts.

The privacy policy explains every permission and what is processed only on your device.

Before you install

  • OIOA is free. There are no paid features at present.
  • Calendar calculations run on your phone and work offline.
  • For any date your family observes, please follow your community’s authority; see the disclaimer.

Questions? Read the FAQ or contact us.

Bring your family, and your calendar, into one app

Family Tree with tithis, shared contacts on every phone, events that ring for everyone, and your community's own calendar, offline. Free, with no paid features.

Android: link coming soonGoogle Play iPhone: link coming soonApp Store

OIOA is for Android and iPhone. Store links appear here as soon as each listing is public.