Your faithful friend, making life more organized.
15 years, over 1 million users.
Contact: hachi.iphone@gmail.com
Scroll endlessly through your past and future.
Turn events into checkable to-dos.
AI helps you create and analyze events naturally.
Floating cards keep countdowns and key dates always in view.
Hachi Calendar combines Calendar + To-Do + AI Assistant + Floating Date Cards into one powerful, seamless interface.
Browse vertically without switching views.
Check off events like tasks.
Let AI create, complete, and analyze your schedule.
Supports Gregorian / Lunar calendars, seasonal terms, and traditional date references to help you plan smarter.
####Key Features
Infinite Vertical Scrolling
Browse past and future smoothly without switching pages.
One-Page Operation Flow
View, add, drag, copy, move, and complete — all on one screen.
Events as To-Dos
Mark events as completed and keep a record of progress.
Integrated AI Assistant
Create events from natural speech or text; AI parses times, reminders, repeats, and provides summaries, analytics, and free-time suggestions.
Floating Countdown Cards
Display countdowns, elapsed days, or key dates.
Auto-highlights when deadlines approach.
Time Insights & Analytics
Discover active hours, time usage trends, and weekday/weekend differences.
Quick Voice Input
Long press to record → real-time transcription → release to create.
Countdown indicator before recording ends.
Smart Gap & Conflict Detection
Detects available slots and prevents overlapping events.
Key Dates Always Visible
Floating cards + countdowns + quick jumps keep important days front and center.
Emojis & Categories
Add emojis and tags for quick visual identification.
Multiple Reminders
Standard alerts, countdown highlights, and completion feedback.
Privacy First
Local analytics only — no data uploaded.
####Typical Use Cases
Say “Review meeting at 3 PM Friday, remind me 10 minutes before” → instantly created.
Check off daily study or workout goals.
Keep countdowns for exams, trips, or milestones visible.
Ask AI for “next week’s free time” to schedule meetings.
Review your time structure with automatic visual insights.
Track lunar birthdays or seasonal events easily.
####Highlights
True one-page vertical scrolling experience
Events double as to-dos
AI-powered creation, analysis, and scheduling suggestions
Floating cards for countdowns & key dates
Long-press voice input with dynamic countdown
Supports Gregorian / Lunar / Solar Terms / Almanac
Time usage insights and rhythm optimization
Lightweight, fast, and information-dense
####Perfect For
Users who want to manage schedules and tasks in one screen
Heavy planners who love AI or quick voice entry
Those who follow both modern and traditional calendars
Anyone who needs countdowns and visual goal tracking
People who want to analyze time usage to optimize their routines
I would give it a 5 but you removed the “TOOL” link that I could calculate number of days etc.
Awesome calendar app with continued updates and support
ocnorb1
I’ve used this calendar app for years now. Updates for the past few months have been amazing. The developer has been fixing any issues quickly and accepting input from users. I’ve sent a couple suggestions and they seem to fix most of what is asked of them. Good work on taking suggestions from users and constantly make improvements to the app!
This used to be GREAT!
anomaly7
I’m so glad they fixed the app! It is better than ever. I can now access all features. It took a bit of getting used to the changes that came with more features, but nothing stays the same, and life is all about change.
Love this app!
marlo:)
I’ve been using this app for years now! Through the updates everything stayed easy. When ever little bump would show up and I reach out to the support team, I was alway met with a quick response, reason and remedy!
1. Added a new **App font size setting**, which can be configured in General Settings.
2. Optimized the schedule export feature: added Excel export for duration statistics and improved the image export layout.
3. Added a Timeline mode to the Day view for a more intuitive way to view schedules.
4. Fixed an issue where a “no permission” message appeared incorrectly when deleting or modifying events.
5. Fixed other known issues and performed multiple performance optimizations to improve overall stability.
We hope the new version of Hachi Calendar brings you a better experience. Thank you for your support!
Version 11.3.7
The developer, 加明 严, 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 Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
加明 严
Size
24.8 MB
Category
Productivity
Compatibility
Requires iOS 16.1 or later.
iPhone Requires iOS 16.1 or later.
iPad Requires iPadOS 16.1 or later.
Mac Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.