Android

To-Do Calendar Planner

To-Do Calendar Planner has 4,893,188 installs, rated 4.4 from 35,294 ratings, #721 of 183,114 in Productivity.

View in the Android store ↗
Installs
4,893,188
+89 (+0.0%) a week, measured over 13 days
Rating
4.4
35,294 ratings
-7 ratings (-0.0%) a week, measured over 13 days
Rank on Android
#21,312
of 2,905,127
down 665 since 2026-11-01
Version
9.6.54.1.6
Last updated 2026-03-27

Description

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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.

Is To-Do Calendar Planner safe?

StoreTally doesn't rate safety. Here's what the store and our tracking show:

  • Listed on Google Play.
  • Made by TIMLEG; developer website listed: isotimer.com. Details →
  • On Google Play since 2012-03-04. Last updated 2026-03-27.
  • Rated 4.4 from 35,294 ratings. Details →

Reviews The reviews Google Play shows first (its most relevant), from the US store, in any language.

From 35,279 ratings.

Growth change in installs

Per Growth Growth % Actual change Measured over
day Not enough history yet
week +89 +0.0% +170 13.4 days
month +402 +0.0% +414 30.9 days
year Not enough history yet
How these figures are measured

Change in installs, scaled to each window from the real gap between crawls. A window needs a full period of history before it reports anything.

Tracking since 2026-09-30. History accumulates as changes are observed — check back soon.

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