Calendar · Tasks · Habits · Lists
GYST pulls your calendar, tasks, habits, and lists into one calm place — and uses AI to keep the week ahead handled.
Native iPhone app and full web app. No credit card.
One place for all of it
Calendar, tasks, habits, and lists don't live in four apps that never talk. In GYST they share one timeline — so nothing falls through the cracks between them.

Calendar & timeline
Events lay out on a day timeline with the day's weather, markets, and busy hours reading right above them. Trips and vacations stretch across the days they actually span.
Tasks
Every task carries two dates: when it becomes available, and when it's actually due. GYST hides it until it's yours to do, then nudges you at the edges — and flags anything finished late.

Habits & routines
Track a habit as a simple check, a count, a timer, or something you're quitting. Every streak climbs ten named tiers, each with its own evolving art — and a missed day can spend a banked cheat day instead of breaking the run.

Lists
Start from a dozen templates: grocery, packing, books, gifts, and more. Share a list with friends for live, item-level collaboration. On a gift wishlist, members can claim items — and the owner never sees who claimed what.
It's alive
Both of these are the real product, running right here on the page — not a video. Try them.
Habit tiers · live
This is the exact effects engine from the app. Each tap advances the streak a tier — the art evolves and its particles ignite.
10 themes · live
The same week, re-skinned. Ten handcrafted themes — each with a light and dark variant — switch instantly, no reload. Pick one:
10 themes · 10 habit tiers · 9 event visual effects
Intelligence
Ask a plain question and get an answer from your own calendar and tasks. Type a plan in plain English and it lands on the right day. Wake up to a brief that already read your schedule.
Bring your own AI key — no markup

A morning summary built from your real calendar, tasks, and weather — delivered when you want it, and readable aloud.
"Am I free Friday afternoon?" "How much overtime this year?" Answered exactly from your own data — not a guess.
Connect Gmail and GYST spots packages, flights, bills, and reservations across eight kinds of email — landing them as events to approve.
On the newest iPhones, fast on-device intelligence handles capture privately. Cloud assist covers everyone else, everywhere.
iOS 26 · rolling out
Your data stays yours
No credit card. Every feature is free right now. Your data is isolated to your account and never sold — on your iPhone and on the web.