Lunar calendar on iPhone Duo: vLunar designed for two panes
Updated November 6, 2026 • vLunar
Since version 2.6, vLunar has a layout designed for iPhone Duo. Unfold the phone and the Vietnamese lunar calendar opens like a book: the month grid on one side, the full day card on the other. Fold it and the app switches to a single-screen layout with a Liquid Glass button rail on the right edge. The app detects the phone on its own; there is nothing to turn on.
Unfolded: a lunar calendar like a book
When you unfold iPhone Duo, vLunar shows two panes side by side, like an open calendar:
- Left pane: the month grid with the solar and lunar date in every cell, and the month's events below.
- Right pane: the full day card with the lunar date, Can Chi of the day, month and year, the solar term, sunrise and sunset, the 12 zodiac hours and the day's events.
- Far right: a Liquid Glass button rail to jump to today, share, quickly add an event and open settings.
- Tap a day in the left pane and the right pane follows at once, without changing screens.
Folded: clean on a single screen
When you fold the phone, vLunar switches to a single-screen layout: the day card and the month grid swipe smoothly. The button rail sits on the right edge, clear of the camera area and the home indicator, so it never covers content.
The Liquid Glass button rail
- Top: Today to jump back to today, or the back arrow when you are in a sub-screen.
- Bottom: share the day card, quickly add an event (for example a memorial day that repeats every lunar year) and settings.
Settings, Journal and calendar management follow suit
Sub-screens such as Setting, the Journal and calendar management use the same layout and margins as the main screen, so the whole app feels consistent folded or unfolded.
Get started on iPhone Duo
- 1Download vLunar from the App Store (button at the end of this page), or update it to the latest version.
- 2Open the app on iPhone Duo.
- 3Unfold for two panes, fold for one screen. The app recognises iPhone Duo and switches layout.
- 4To see the lunar date on your home screen, add the vLunar widget as in the iPhone widget guide.
Regular iPhones and iPad keep their own familiar layout; the two-pane layout is for iPhone Duo only.
See the lunar date right on your home screen
Install vLunar for a Vietnamese lunar calendar widget, Can Chi, the 12 zodiac hours and reminders for memorial days, full moon and new moon on the exact lunar date. No need to open a website every day.
Free
- ✓Lunar date, Can Chi, solar term and moon phase for every day
- ✓The 12 zodiac hours (twelve two-hour periods of the day)
- ✓Events that repeat every lunar month or lunar year: memorial days, full moon, new moon, reminded on the right lunar date
- ✓Vietnamese holidays, US Holidays, and events from the calendars on your phone
- ✓Small, medium and large home screen widgets, with your own background photo
- ✓Journal with photos, videos and hashtags, each entry with its lunar date
- ✓Two-pane layout designed for iPhone Duo
Pro
- ★Lock screen widgets and widget customisation: colours, text, lunar and solar layout
- ★Unlimited countdown widgets with photos rotated from journal hashtags
- ★Apple Watch app and complications
- ★Weather forecast part of the meteorology block on the day card and medium widget (Apple Weather)
- ★Journal lock with Face ID or passcode
Subscription through the App Store or Google Play; see the price in the app.
Frequently asked questions
Is the iPhone Duo layout of vLunar free?+
Yes. The two-pane layout, the single-screen layout and the Liquid Glass rail are all in the free version. Pro is only needed for things like lock screen widgets, unlimited countdown widgets, Apple Watch and the weather forecast part of the meteorology block.
Do I need to turn anything on?+
No. vLunar recognises iPhone Duo and changes layout when you fold or unfold the phone.
Which vLunar version do I need?+
The iPhone Duo layout exists since version 2.6. Keep vLunar updated to the latest version from the App Store.
Do lunar calendar widgets work on the iPhone Duo home screen?+
Yes. Small, medium and large home screen widgets are free; unlimited countdown widgets are Pro. You add them as on any iPhone; see the iPhone widget guide.
More guides
- How to add a lunar calendar widget to your iPhone home screenStep by step: add the vLunar Vietnamese lunar calendar widget to your iPhone or iPad home screen, pick small, medium or large, stack widgets and fix a widget that does not change date.
- How to show the lunar calendar on iPhoneTurn on the lunar calendar in the iPhone Calendar app with Alternate Calendars, learn why the Chinese lunar date sometimes differs from the Vietnamese one, and see the Vietnamese lunar date on your home screen.
- How to show the lunar date on the iPhone lock screenAdd the vLunar lunar calendar widget to the iPhone lock screen (iOS 16 and later): lunar date, Can Chi year and moon phase under the clock, plus how to remove it and fix it.
- How to add a lunar calendar widget to your Android home screenAdd the vLunar Vietnamese lunar calendar widget to your Android home screen on Samsung, Xiaomi, OPPO, realme and vivo, and fix a widget that does not change date after midnight.
- How to see the lunar calendar on Apple WatchPut the Vietnamese lunar date on your Apple Watch face with the vLunar app and complication: install the watch app, sync from iPhone, add the complication to the watch face.
- Vietnamese lunar date todayToday's lunar date, Can Chi of the day, month and year, the next full moon and new moon, and the countdown to Tết.