# OneCalendar: All in AI Planner — AI Calendar, Tasks & Focus > Unified calendar, to-do list, weather, and notes app. (iPhone/iPad app by Hoan Ngo.) - Source: https://appshunter.io/ios/app/onecalendar-all-in-ai-planner/id1127164793 (this page in markdown: same URL + `.md`) - Developer: [Hoan Ngo](https://appshunter.io/developer/1002940962) - Category: Productivity, Utilities - Price: Free - Rating: 4.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 9+ - Requires: iOS 17.0 · 12 MB - Languages: American English, French (France), German (Germany), Hindi, Indonesian, Japanese, Korean, Russian, Chinese (Simplified, China), European Spanish and 2 more - Released: 2016-06-24 - Data updated: 2026-09-19 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/onecalendar-all-in-ai-planner/id1127164793/reviews.md ## What is OneCalendar? OneCalendar - All in one calendar: Awesome Calendar + AI To-do list + Notes + Planner . OneCalendar brings your calendar, appointments, to-dos and focus tools together in one simple place. Plan your schedule, organize tasks, manage appointments and stay focused without switching between multiple apps. SMART CALENDAR View your schedule by month, week or year. Keep track of events, holidays and lunar dates in a clean, easy-to-read calendar. AI PLANNING ASSISTANT Create appointments and tasks using natural language. Simply type or speak requests such as: “Lunch with Mary at 1pm” “Dentist appointment Friday at 3pm” “Buy groceries tomorrow” OneCalendar turns your request into an organized task or appointment in seconds. APPOINTMENTS Keep meetings, appointments and important events in one simple list. Pin important items, view today's schedule and quickly find what is coming next. TO-DO LIST Capture tasks as soon as you think of them. Organize to-dos with filters, reminders and pinned items so nothing gets forgotten. FOCUS TIMER Start a focused work session and track how much time you spend concentrating. Review your focus activity by day, week or month. IOS CALENDAR INTEGRATION Show events from your iOS calendars alongside your OneCalendar plans, including meetings, birthdays, holidays and other events. LUNAR CALENDAR View lunar dates directly inside the calendar for quick reference alongside the solar calendar. EVERYTHING IN ONE PLACE • Calendar • Appointments • To-Dos • AI Assistant • Reminders • Focus Timer • Lunar Calendar • iOS Calendar Events Whether you are planning your workday, organizing personal tasks or simply trying to stay focused, OneCalendar helps you see what matters and get things done. ## Key features - Calendar synchronization - To-do list management - Weather forecasts - Notes with photo support - Diary creation ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/onecalendar-all-in-ai-planner/id1127164793/reviews.md ### 4/5 — Great Calendar App *2019-12-18* In my opinion this is a great and Simple to use Calendar App.it has a nice clean layout,and you can take notes...nice app.. ## Frequently asked questions about OneCalendar ### Does OneCalendar have ads? No, OneCalendar is ad-free, allowing for an uninterrupted user experience. ### What devices is OneCalendar available on? OneCalendar is available for iPhone, iPad, and iPod devices. ### How often is OneCalendar updated? The latest version, 1.6.6, was released on June 24, 2016. Further update frequency information is not available. ### What is the age rating for OneCalendar? OneCalendar has an age rating of 4+, making it suitable for a wide range of users. ### Can I sync my iPhone calendars with OneCalendar? Yes, OneCalendar offers automatic synchronization with all iPhone calendars. ### What integrations does OneCalendar offer? OneCalendar integrates iPhone calendars, and allows for creation of to-do lists, diaries with photos, and weather checks. ### What is the user sentiment for OneCalendar? Based on limited data, OneCalendar has a rating of 4.0 stars from 1 rating. ### Is OneCalendar free to use? Yes, OneCalendar is available for free. ## Version history (last 2 releases) ### 1.8.6 — 2026-09-16 Update UI AI Todo list Focus Tomoto ... ### 1.6.6 — 2016-06-24 This update is signed with Apple’s latest signing certificate. No new features are included. ## Apps similar to OneCalendar | App | Rating | Price | Category | | --- | --- | --- | --- | | [SnapCal - for Google Calendar](https://appshunter.io/ios/app/snapcal-for-google-calendar/id922433670) | 4.0 (2) | Free | Productivity | | [Supercal Calendar](https://appshunter.io/ios/app/supercal-calendar/id1659838610) | 4.4 (48) | Free | Productivity | | [Page Calendar](https://appshunter.io/ios/app/page-calendar/id515706557) | 4.7 (148) | Free | Productivity | | [Calendar app *DeepBlack](https://appshunter.io/ios/app/calendar-app-deepblack/id1115009429) | 4.5 (2) | Free | Productivity | | [CalCal - easy to use Calendar](https://appshunter.io/ios/app/calcal-easy-to-use-calendar/id1529044923) | 4.5 (4) | Free | Productivity | | [Color Calendar](https://appshunter.io/ios/app/color-calendar/id1023116360) | 5.0 (3) | Free | Productivity | ## More apps by Hoan Ngo - [My Contacts Backup Pro - Easy contacts backup and restore](https://appshunter.io/ios/app/my-contacts-backup-pro-easy-contacts-backup-and-restore/id1002940963) - [Text To Group! Send text to Group and Contacts Manager](https://appshunter.io/ios/app/text-to-group-send-text-to-group-and-contacts-manager/id1052577247) - [PDF Reader Pro - Book Reader and downloader](https://appshunter.io/ios/app/pdf-reader-pro-book-reader-and-downloader/id1063775970) - [Fast IDM - Fast Internet Loader Pro](https://appshunter.io/ios/app/fast-idm-fast-internet-loader-pro/id1116714434) - [Lịch Vạn Niên Lịch Âm Việt Nam](https://appshunter.io/ios/app/lich-van-nien-lich-am-viet-nam/id1122984611) All apps by Hoan Ngo: https://appshunter.io/developer/1002940962 ## Related topics [onecalendar free](https://appshunter.io/ios/topics/onecalendar-free) · [onecalendar](https://appshunter.io/ios/topics/onecalendar) · [free calendars](https://appshunter.io/ios/topics/free-calendars) · [weather calendar together](https://appshunter.io/ios/topics/weather-calendar-together) · [notebook to calendar](https://appshunter.io/ios/topics/notebook-to-calendar) · [roping calendar](https://appshunter.io/ios/topics/roping-calendar) · [vnccalendar](https://appshunter.io/ios/topics/vnccalendar) · [1calendars](https://appshunter.io/ios/topics/1calendars) · [100 years calendar](https://appshunter.io/ios/topics/100-years-calendar) · [caldown](https://appshunter.io/ios/topics/caldown) · [afghanistan calendar](https://appshunter.io/ios/topics/afghanistan-calendar) · [calendario trabajo](https://appshunter.io/ios/topics/calendario-trabajo) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-19.*