WhenNote: Countdown & Days
Anniversary, D-Day, Date Calc
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Keep important dates organized, understand every interval, and back up your notes privately to Google Drive when you choose.
WhenNote keeps important dates clear and easy to revisit. Organize meaningful
events in flexible notebooks, understand how much time has passed or remains,
and handle everyday date calculations in one focused app.
Features:
- Organize dates into separate notebooks
- Record names, descriptions, start dates, and end dates
- See elapsed, upcoming, and remaining time at a glance
- Calculate and total date intervals
- Add or subtract days, hours, and minutes
- Reorder notebooks and entries to match your workflow
- Optionally back up and restore through your private Google Drive app-data area
- Use the app in English, Traditional Chinese, Simplified Chinese, or Japanese
Your notes are stored on your device by default. When Google Drive backup is
enabled, WhenNote requests access only to its own hidden app-data area—not your
other Drive files.
No ads. No tracking. No unnecessary account required.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New: WhenNote now supports Simplified Chinese. Also fixed language selection on devices set to Chinese.
The developer, Hank Wang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- User Content
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Hank Wang
- Size
- 23 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Japanese, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Handstar Apps