# OneCalendar Free - All in one calendar

> Unified calendar, to-do list, weather, and notes app. (iPhone/iPad app by Hoan Ngo.)

- Source: https://appshunter.io/ios/app/onecalendar-free-all-in-one-calendar/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: 4+
- Requires: iOS 6.0 · 23 MB
- Languages: American English
- Released: 2016-06-24
- Data updated: 2026-08-23
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/onecalendar-free-all-in-one-calendar/id1127164793/reviews.md

## What is OneCalendar Free?

OneCalendar - All in one calendar: Awesome Calendar + To-do list + Weather + Notes. Now you can automatically sync with all iPhone calendars, write your todo list, create diaries with photos, check the weather and more, all with One Calendar

## 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-free-all-in-one-calendar/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 Free

### 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 1 release)

### 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 Free

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Color Calendar](https://appshunter.io/ios/app/color-calendar/id1023116360) | 5.0 (3) | Free | Productivity |
| [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 |

## 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

[1calendars](https://appshunter.io/ios/topics/1calendars) · [weather calendar together](https://appshunter.io/ios/topics/weather-calendar-together) · [skylight calendar app](https://appshunter.io/ios/topics/skylight-calendar-app)

---

*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 2026-08-23.*