To-Do Calendar Planner

In-app purchases
4.2
35.3K reviews
1M+
Downloads
Content rating
Everyone
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About this app

The ultimate personal organizer!

• Use a powerful task list that supports batch operations
• Enjoy a fully scrollable calendar with daily, weekly, monthly and agenda view
• Define your personal goals and add tasks to them
• Set multiple reminders for tasks and events
• Divide your tasks into subtasks
• Set repeating tasks and events
• Use resizable Widgets in 4 different formats
• Attach files and photos to your tasks and appointments
• Sync your data between devices without effort
• Attach Google Maps locations to your tasks and events
• Use a daily journal to keep track of your life
• Never forget the birthdays of your friends
• Apply GTD principles to your daily life
• Schedule your tasks directly on the calendar
• Draw your own notes and attach them to tasks and events
• Convert your tasks, goals, notes and events into each other
• Create audio recordings and attach them to your tasks and events
• Access your data from a PC (web version www.isotimer.com)

Advanced features (Premium Upgrade):
- Plan your goals in project view
- Collaborate on tasks, projects, events.
- Track your progress with detailed progress reports
- Get organized with a daily step-by-step routine
- Use the Clean-Up feature to easily prioritize your task list
- Create backups and restore them
- Protect your data with a password
- Export your data to CSV files


With isoTimer you can:

...orient yourself toward your goals
...prepare each day with care using a calendar and a to-do list
...balance your professional and your private life
...focus on the most important tasks
...never forget ideas or events

IsoTimer organizer is the ideal companion for planning all parts of your life!
The perfect ToDo Calendar Planner for personal and business use.
Updated on
Dec 3, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Calendar and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.3
31.8K reviews
Tess List
November 8, 2023
I've been "with" IsoTimer ever since I turned in my Blackberry. seems to have lost the ability to obey the same settings that I've been setting for a decade (!) but I had to break up with isoTimer when she refused any longer to be a local calendar and not sync with either my Android 🗓 or my other local calendars; other refusals were annoying - refusal to skip the goals aspect of the Ap; refusal to use its own IsoTimer reminder tone which iselect;etc. This. was. Terminal.
5 people found this review helpful
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Carla Anderson
November 30, 2022
It was a fantastic app, that I recommended several times. But the most recent update screwed up pretty much everything, with my reoccurring tasks not resetting for the current day/week, and my calendar missing several appointments. I became pretty dependent on the app to help remind me of everything I need to do and of upcoming appointments and now I'm scrambling to remember everything the app deleted. Really disappointed and hoping it can be fixed soon
6 people found this review helpful
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Cindy Weeks
April 18, 2023
Please stop rotating this is a good app that I have used for years but very recently it keeps rotating even when my phone's auto rotate is turned off. This makes adding events very difficult and it's super annoying. Please fix. Update I have changed the rating. Thanks for your response I was able to change the settings and fix the auto rotate issue. This really is a great app it is a must have.
10 people found this review helpful
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TIMLEG
April 18, 2023
You can disable orientation change in the Settings: General

What's new

Bug fixes