Aether Arc
See time, don't calculate it.
Time zones made spatial. Scrub through a visual timeline, see color-coded working hours, and know when it's safe to reach out — without doing the math.
Summer 2026
Time zones are executive function work
Converting time zones means holding numbers in your head, doing arithmetic, and remembering whether someone is 8 or 9 hours ahead this month.
For people who experience time differently, that math is one more thing competing for limited working memory. Arc replaces the math with color. Green means they're working. Yellow means they're winding down. Gray means they're offline. One gesture, one glance, no calculation.
Color tells you what numbers can't
Visual Time Zones
See multiple time zones at a glance with color-coded working hours. Green means working, yellow means winding down, gray means offline.
Calendar Integration
Your upcoming meetings appear right on the timeline. See how they fit across every zone without switching apps.
People & Places
Attach contacts to time zones for quick reference. Know what time it is for your team, your clients, and your family.
Find a Time
Discover overlapping working hours across zones instantly. No spreadsheets, no mental math — just a visual answer.
Live Activities & Watch
Track meeting times on Dynamic Island, Lock Screen, and Apple Watch. Glance without unlocking.
One gesture replaces the math
Add your zones
Search for any city or attach a contact. Arc adds their time zone and working hours automatically.
Scrub the timeline
Drag across the visual timeline and watch every zone move together. See exactly what time it will be for everyone.
See the overlap
Color-coded working hours show when it's safe to reach out. Find meeting windows across any combination of zones.
Share with confidence
Send time cards that open to the right time in Arc. No more "wait, is that your time or mine?"
Time checks, everywhere you look
iPhone
Scrub through time zones with one gesture
Apple Watch
Quick time checks from your wrist
Live Activities
Meeting times on Lock Screen and Dynamic Island
Private by Design
No accounts, no tracking, all data on-device
Technical Highlights
- Platforms
- iOS 26+, watchOS 26+
- Live Activities
- Lock Screen + Dynamic Island
- Calendar
- Optional EventKit integration
- Language
- Swift 6 with strict concurrency
- Privacy
- On-device, no accounts
- Dependencies
- None — Apple frameworks only
Get early access
Be among the first to try our apps via TestFlight before they launch on the App Store. Real builds, real feedback, real impact.
You're on the list
Meet Aether Ember
While you wait for Arc, try Aether Ember — the sunset-forward focus timer built for restless minds. Warm colors spark the start. Thought capture keeps you in flow.