Nisteia — Orthodox Fasting

Nisteia answers one question at a glance: what can I eat today?

• Today screen — fasting level, allowed foods (meat, dairy, fish, wine, oil), the reason, and the saints of the day
• Color-coded monthly calendar — plan meals and shopping for the whole fast
• Seasons — countdown to the next fast, progress through the current one
• Food guide — what's allowed and avoided today, including the shellfish rule that surprises everyone
• New AND Old Calendar support — choose during setup
• 6 languages: English, Greek, Romanian, Russian, Serbian, Bulgarian

Nisteia covers Great Lent, the Nativity Fast, the Apostles' Fast, the Dormition Fast, and the ordinary Wednesday and Friday fasts, on both the Revised Julian and the Julian calendar.

Accurate by design: fasting rules follow the OCA guide, computed entirely on your device and validated day-by-day against orthocal.info across 14 years with zero mismatches. Fasting accuracy is never behind a paywall.

Private by design: no account, no login, no ads, no analytics. Nothing leaves your phone. Nisteia works fully offline.

Nisteia Pro: a single $3.99 unlock, no subscription — pay once, keep it forever. Pro opens the full calendar so you can browse any year, forward and back. Everything else, including every fasting rule, is free.

Fasting practice is personal — consult your priest for your own situation.