Timezone Slider: See Every Time Zone at a Glance
The timezone slider that makes comparing time zones visually obvious. No mental math. No daylight saving surprises.
Scheduling a call across multiple time zones shouldn't feel like homework. Timezone Slider shows all your selected zones at once — slide to any time and watch every zone update together. Pick a moment, check everyone's working hours, and share it as a calendar event or clean text message.
Features & Capabilities
Visual Time Drum Interface
Vertical scrollable time drum showing 24-hour timeline. All selected time zones displayed horizontally. Slide through time and watch all zones update simultaneously in real-time.
Working Hours Management
Customizable working hours for each timezone individually. Color-coded visual indicators showing when someone is working, sleeping, or off the clock.
Timezone Management
Add multiple time zones with searchable selection. Automatic detection of your current timezone. Color-coded timezone cards with automatic daylight saving time handling.
Calendar Integration
One-tap Apple Calendar and Google Calendar event creation. Pre-filled event times based on selected moment with automatic timezone handling.
Share & Copy Functions
Copy all timezones to clipboard as formatted text. Share times via system share sheet. Works with Messages, Email, Slack, and more.
Home Screen Widgets
Interactive medium-sized widget showing all selected timezones at a glance. Step-based time adjustment with 30-minute increment controls. No need to open the app for quick checks.
Frequently Asked Questions
What is Timezone Slider?
Timezone Slider is a free iOS app that lets you visually compare multiple time zones at once. Slide through a 24-hour timeline and watch every selected zone update in real time — no mental math required.
How does the timezone slider work?
Add the time zones you need, then drag the visual time drum up or down. All zones move together so you can instantly see what time it is everywhere. Color-coded working-hours indicators show when colleagues are available.
Is Timezone Slider free?
Yes. Timezone Slider is completely free to download and use on iOS 17 and later. No ads, no subscriptions, no in-app purchases.
Does Timezone Slider handle daylight saving time?
Yes. Timezone Slider automatically detects and adjusts for daylight saving time changes in every selected zone, so you never have to worry about off-by-one-hour mistakes.
Can I share timezone comparisons from the app?
Absolutely. You can copy all selected timezones as formatted text, share via Messages, Email, or Slack, and create calendar events in Apple Calendar or Google Calendar directly from the app.
The Simplest Timezone Slider for iOS
Built by an indie developer who got tired of guessing time differences. Every feature is intentional. Every detail is considered. No bloat, no corporate feature creep — just a timezone slider that does one thing exceptionally well.