# Daystack: Calendar — Natural-language calendar

> Natural-language calendar (iPhone/iPad app by jiahao zhang.)

- Source: https://appshunter.io/ios/app/daystack-calendar/id6773985206 (this page in markdown: same URL + `.md`)
- Developer: [jiahao zhang](https://appshunter.io/developer/1895708572)
- Category: Productivity, Utilities
- Price: Free with in-app purchases (on sale, was $1.99)
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: English
- Released: 2026-06-04
- Data updated: 2026-08-15
- User reviews in markdown: https://appshunter.io/ios/app/daystack-calendar/id6773985206/reviews.md

## What is Daystack?

# 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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Daystack Yearly | $9.99 | per year |
| Pro+ Annual | $59.99 | per year |
| Pro Monthly | $4.99 | per month |
| Pro Annual | $29.99 | per year |
| Pro+ Monthly | $9.99 | per month |



## Version history (last 3 releases)

### 1.1.3 — 2026-06-30

Added a one-time Lifetime unlock in the paywall — pay once, unlock every Pro feature forever. Plus WeatherKit attribution refresh and stability fixes.

### 1.1.0 — 2026-06-17

Daystack 1.1 — built from your feedback.

• Event Categories: tag events with 100 colour-coded labels and filter any view by them (8 categories free, all 100 + custom on Pro).
• New Week Agenda view: your whole week as a clean, scrollable list.
• Tap any month in Year view to zoom straight into that month.
• Calendar Sets are now fully editable and deletable on the free tier — make them your own.
• New $9.99/year plan with a 14-day free trial.

Plus polish and fixes throughout. Thank you for the suggestions — keep them coming.

### 1.0.0 — 2026-06-04

No release notes.

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## More apps by jiahao zhang

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All apps by jiahao zhang: https://appshunter.io/developer/1895708572

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*