Day 4 — the biblical calendar app
The 364-day sacred calendar model, the Sabbath and the feasts, Scripture and the hours of prayer — in your pocket and on your wrist.
- Free to download
- No account needed
- Your data is never sold
- 13 languages
Inside the app
What’s inside
The Sacred Calendar, Live
See today in a 364-day sacred calendar model, dated from Creation — always know where you stand.
The Feasts & Their Meaning
The Spring and Fall feasts, and how they point to their fulfillment — made simple.
The Whole Bible, Offline
Read, search, and study the complete Scriptures across translations — no signal required.
Hours of Prayer
Guided sessions rooted in the ancient hours call you to prayer through the day.
Manna, Your Daily Card
A fresh verse and encouragement each day, beautifully designed to share.
The Year Dial
The whole sacred year at a glance, on your Home Screen and your wrist.
iPhone, iPad, Android, and Apple Watch — the sacred year is always a glance away.
Common questions
- Is Day 4 free?
- Yes. Day 4 is free to download, and today’s sacred date and the next Sabbath are always free. Day 4 Premium is an optional subscription.
- Do I need an account?
- No. Start as a guest. Sign in only if you want your notes, highlights and saved verses to follow you across your devices.
- Which devices does Day 4 run on?
- iPhone, iPad and Apple Watch, Android phones and tablets, and any browser through the web app at day4.app.
- Which languages is Day 4 in?
- The app and this site are available in: English, Ελληνικά, Español, Français, हिन्दी, Italiano, 日本語, 한국어, Latina, Português, Русский, Українська, 简体中文, 繁體中文.
The whole year, in your hands.
Day 4 is free to download, and today’s sacred date and the next Sabbath are always free.
Start with a free 7-day trial of Day 4 Premium — the full timeline, every appointed time, and the complete sacred year.