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  • DeepDo - 階層型ToDoアプリ screenshot 1
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About DeepDo - 階層型ToDoアプリ

① App Overview



DeepDo is a simple and highly functional ToDo app that allows you to organize tasks in a hierarchical structure.



You can freely and deeply structure your tasks by creating subtasks within a task and adding even more detailed tasks within them. From organizing ideas to managing business projects, you can build tasks in a tree structure that matches your thoughts.



You can also save and share task structures to support a variety of uses, such as "handing over steps," "expanding to-do lists," and "visualizing structures." It can be used for personal use as well as for organizing information for teams and projects.



② Functions




  • ◆Add list (Add ToDo)


  • ◆Menu when tapping on list

    • ●Select
      《A page based on the selected ToDo opens》

    • ●Add list
      《Create a sub-ToDo for the selected ToDo》

    • ●Edit
      《Change the title, price, and color》

    • ●Save
      《Saves the selected item and all subordinates》

    • ●Delete
      《Deletes the selected item and all subordinates》

    • ●Cut
      《You can cut and insert the selected item and subordinates or only subordinates. The cut item will disappear after insertion.》

    • ●Copy
      《You can copy or insert only the selected item and its subordinates or subordinates.》

    • ●Insert
      《You can insert the saved, cut, or copied item under it.》

    • ●Split for Progress
      《Splits a ToDo that has a value under it. The original value will disappear after splitting.

    • ●Hide subordinates
      《Hide subordinates of the selected item》

    • ●Zoom out
      《Zoom out the selected item (swipe for shortcut)》



  • ◆Display every 3 levels
    Example: Display 5, 6, and 7 levels, with levels 1 to 4 displayed at the top as a breadcrumb list

  • ◆Supports 46 languages
    Can be changed from the settings screen

  • ◆Backup to internal storage
    Can be divided into folders

  • ◆Backup to external storage
    Please allow permissions

  • ◆Backup list (internal storage)
    Functions include sharing, overwriting, inserting, restoring, and deleting


  • ◆Restore from external storage
    You can restore files from external storage


*Price refers to a numerical value, and you can set a numerical value for ToDo items.

The unit of the numerical value can be changed in the settings (e.g. $, piece, task, yen, man-hour, etc.).

Saving files according to the unit expands the usage.

Note that only end items can have numerical values.



③ Developer's Intention



This app was designed for "structural thinkers".



Its true value is shown in situations where tasks are perceived as surfaces or trees, rather than lines - architecture, design, writing, learning, research... in such fields.



④ Use cases and examples



DeepDo can be used in the following situations




  • Construction site process management

  • Structural design for long-term projects

  • Writing and writing plot construction

  • Programming design flow organization

  • Classification and progress management of study plans and research



The deeper the hierarchy, the more difficult it becomes to manage ToDos, but with DeepDo, you can visually grasp "where everything is" and intuitively handle complex task structures.



⑤ Differences and uniqueness from other apps



Many general ToDo apps can only handle up to two levels of tasks and subtasks, limiting their flexibility.



DeepDo allows you to manage tasks with infinite hierarchical levels, and also has flexible editing functions that allow you to copy, cut, and insert each part.



Another unique feature is that you can assign a "price (numerical value)" to a task, which can be used to estimate progress and workload.



⑥ Future updates and prospects



The following features are planned for future updates:




  • Development of iOS version



In addition, we will continue to evolve based on user feedback, aiming to make it an even more flexible and convenient tool.

What’s new

Version 7.8.7 · Updated October 7, 2026

Settings “Basic settings” is now split into four tabs. Basic: turn backup and display options on or off. Language: choose the app language. Display: set a nickname, characters before and after prices, and the total label. Account linking: link a Google or Apple account.

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