Daystack — Natural-language calendar

Type your day. We'll figure out the rest.

Daystack is a modern, on-device calendar layered on top of the calendars you already use — iCloud, Google, Exchange, anything iOS can talk to. Type "lunch with Sarah tomorrow 1pm at Blue Bottle" and Daystack does the rest: it parses the date, time, location, and contact, fills in a draft event, and lets you confirm with one tap.

Built for people who want Apple Calendar with more brain — and zero data tourism.

WHAT MAKES DAYSTACK DIFFERENT

• Natural-language entry, on-device. Type plain English. Daystack parses date, time, duration, location, attendees, and recurrence — no cloud round-trip. Try "every Monday 10am team standup," "in 2 hours phone call," or "next Friday 2pm dentist."

• Smart travel time. When two events have locations, Daystack uses MapKit to compute drive / walk / transit time and inserts a "Travel: A → B" block so you don't double-book. Cached on-device; no third-party APIs.

• Calendar Sets. Create scenes — Work, Life, Family, Travel — each with its own visible calendars. Long-press the app icon to switch in under three seconds. Tie a Set to a Focus mode and Daystack will switch automatically.

• Per-event weather. Apple WeatherKit shows you what to expect for each event with a location. Cached, anonymous.

• Eight views. Day, Week, Work Week, Month, Year, List, Timeline (horizontal gantt), and Map. Pick any. Never locked behind a tier.

• Widgets, Live Activities, Watch. Lock-screen "Next event," home-screen "Today list," 5-week heatmap, Dynamic Island travel countdown, and a Watch app with Complications.

• Privacy by default. Daystack never operates a server. Your events live in your iCloud / Google / Exchange. We don't read them, store them, or send them anywhere. No analytics SDK. No tracking. No account required.

• ICS import / export. Pull in any .ics file from Fantastical, Calendars by Readdle, or anywhere else. Export PDF for printing.

PRICING

Daystack is free with a usable free tier. Pro and Pro+ subscriptions unlock unlimited natural-language entries, travel time, weather, widgets, the Watch app, themes, custom phrases, and Pro+ adds CloudKit sync of your settings and Family Sharing for Calendar Sets.

• Pro · Monthly $4.99, Annual $29.99 (save 50%), 7-day free trial • Pro+ · Monthly $9.99, Annual $59.99 (save 50%), 14-day free trial

Free always includes all 8 views, full event CRUD, two Calendar Sets, manual reminders, ICS import / export, and the basic Watch app. No watermarks. No paywall before your first action.

WHO IT'S FOR

People who outgrew Apple Calendar but never warmed to a $56.99/year subscription. People who want their data to stay with them. People who type fast.

Daystack: the calendar that reads English.

—— Daystack Pro subscriptions: Yearly ($9.99/year, 14-day free trial), Monthly ($4.99/month), Pro+ Monthly ($9.99/month), Pro+ Annual ($59.99/year). Payment is charged to your Apple Account at confirmation of purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours prior to the end of the current period. Manage or cancel anytime in Settings → Apple ID.

Terms of Use (EULA): https://leexuanxuan95-dev.github.io/calendar/eula.html Privacy Policy: https://leexuanxuan95-dev.github.io/calendar/privacy.html