TimeOn : Calendar

TimeOn is a shared calendar for family, couples, teams, and friends. Bring together scattered plans with multiple calendars, labels, recurring events, holidays, and widge

Schedules are never truly ours alone. Family anniversaries, plans with a partner, team deadlines, and outings with friends all connect our time with someone else’s. TimeOn is a shared calendar redesigned from the ground up for the way people plan together. It’s not a diary for one person—it’s a collaborative space where multiple people create, change, and check schedules on the same calendar.

[Key Features] Multiple shared calendars Create separate calendars for family, work, or friend groups within one app. A single invite link starts sync, and updates are reflected instantly so everyone sees what changed.

Organize with labels Create labels with colors and names for each calendar so meetings, personal plans, business trips, and anniversaries are easy to tell apart at a glance.

Lunar calendar and holidays together Support for Korean lunar dates, plus automatic holiday imports for Korea, the U.S., China, Japan, and India. Substitute holidays and temporary holidays are also reflected for accurate red-day marking.

Precise recurring event control Supports weekly, monthly, yearly, and even lunar-based recurrence. Edit or delete only specific occurrences to stay flexible with real-life changes.

Offline-first design Works the same on the subway or in airplane mode. Once the network returns, everything syncs automatically.

Three home screen widgets A Today widget for just today’s events, a Weekly widget for the whole week at a glance, and a Monthly widget that opens up the entire month—so you can stay on track without opening the app.

Multilingual support Korean, English, Japanese, Chinese, and Vietnamese. Switch freely within the app regardless of your system language.

Secure sign-in, easy start Start instantly as a guest without an account, and switch to an Apple or Google account anytime without losing data.

Open TimeOn now and group your calendars with the people you see most often. When scattered plans come together in one place, time is no longer something you manage alone—it becomes something you create together.