Sổ Lịch — Lunar Calendar

An elegant Vietnamese lunar calendar for your family traditions. Keep track of memorial days, birthdays, and anniversaries with absolute peace of mind and privacy.

Sổ Lịch is a traditional Vietnamese Lunar-Solar Calendar thoughtfully crafted with a minimalist Zen philosophy, delivering a calm, clutter-free, and privacy-first experience.

Free from intrusive advertisements and visual clutter, Sổ Lịch brings you back to what matters most: accurate lunar dates, honoring ancestors on family memorial days, punctual reminders, and a peaceful headspace every time you check your calendar.

CORE HIGHLIGHTS:

1. ACCURATE & TIMELESS LUNAR-SOLAR CALENDAR • High-precision astronomical calculations tailored for Vietnam time. • Full Heavenly Stems and Earthly Branches (Can-Chi), Solar Terms (Tiết khí), and daily cosmic energy indicators. • Intuitive Auspicious & Inauspicious hours (Giờ Hoàng đạo / Hắc đạo) to guide your daily rituals and important life events.

2. MEMORIAL DAYS & RECURRING LUNAR EVENTS • Effortless Lunar Repetition: Set up death anniversaries (Ngày Giỗ), festivals, and birthdays once; Sổ Lịch automatically calculates the corresponding solar dates for all upcoming years. • Minimalist geometric categories: Memorials, Birthdays, Personal, and Work. • Honor ancestral filial piety without ever forgetting a memorial gathering.

3. DEPENDABLE ON-DEVICE REMINDERS • Offline local reminders scheduled directly on your phone without external server dependency. • Set reminders before events or at your chosen time for all-day events. • Tranquil and gentle chime sounds that bring calmness to your daily life.

4. TRADITIONAL VIETNAMESE CULTURAL UTILITIES • Traditional Prayer Treasury (Văn khấn): Well-structured ritual prayers for the 1st & 15th of each lunar month, Lunar New Year (Tết), memorials, groundbreakings, and ceremonies. • Quick Date Converter: Fast two-way conversion between Lunar and Solar dates. • Zodiac & Horoscope: Look up your animal sign, birth element, and lunar age. • Daily Reflections: A handpicked inspirational quote every day to nurture mindful living.

5. ELEGANT HOME SCREEN WIDGETS • Beautifully designed widgets for Today, Month Grid, and Upcoming Events. • Check lunar dates and upcoming family events at a single glance without opening the app.

6. ABSOLUTE PRIVACY & LOCAL-FIRST ARCHITECTURE • Instant Guest Mode: Open the app and start using it immediately—no mandatory sign-in required. • Your personal events and memories remain private on your device. • Read-only device calendar import: View your existing OS calendar events without altering your original records. • Secure local file backup and restore at your fingertips.

Embrace a mindful, harmonious connection with Vietnamese timekeeping traditions through Sổ Lịch!