iPhone Screenshots


ToDoCalc is an intuitive and visual calculator application developed with the theme "easy to use, stylish, and simple."
We have achieved calculator usability only made possible with an application, and we pursued comfortable use for various situations.
Make every day calculations for memo taking, bookkeeping, business negotiations, work, meetings, studying, vacations, hobbies, etc. more simple and efficient. This application may be the perfect "calculator" you have been looking for.

◎ New features (Memory function and other)

All calculated history expression is recorded as memory, it will start a new calculation. Also, edit the title and the recording date and time of each memory respectively, replacement of memory itself is also possible.
By selectively to a plurality of memory depending on the application, you can take a record of household accounts by the date and time, you can also be collection your own original calculator.
Others, also becomes possible edited by horizontal scrolling of the main role, we conducted a change of other various specifications.

◎Features of ToDoCalc

ToDoCalc is a calculator with memo functions, it records formulas in "Rolls", you can leave memos, check and delete formulas, and move your rolls around.
Your rolls will become a list, and by swiping you can check and delete each roll. You can also move and swap rolls by tapping and pressing down on the roll.

Another feature is the "◎" button which allows you to sum, average, add tax, or currency convert your checked rolls.
Of course, after pressing the ◎ button you can still leave memos, check, delete, and move around your checked rolls.
In addition, by tapping on the main roll, you can copy the sum of each formula.

This simple combination of "Rolls" and "◎" buttons advances how you use a calculator to new dimensions.
Even if you are satisfied with previous calculators, try using this calculator once. The more you use "ToDoCalc", you will realize its potential and you will not be able to go back to previous calculators!

◎Design and user friendliness

The buttons are arranged so that it is easy to see, use, and makes calculating fun for both children and adults.
You can make your favorite picture your wallpaper or change the color and transparency of the background and fonts. You can fully customize your calculator by enjoying the wide variety of skin colors.
All formulas during your calculation process are displayed, so if you find any mistakes, you can make detailed corrections even after your calculation is executed.
You can even share your calculations by email or on social media such as Facebook/Twitter/Google+ easily.
You can use the calculator for various situations with its basic calculator functions, simple calculus calculations, currency conversion, screen rotation, and sound level adjustment functions.
(For a video tutorial on how to use the application, tap the "Gear icon
" on the left hand side of the main roll. Choose the how to option in the menu screen.)

◎Function expansion

We also have a for sale version of the application that has no in-app advertisements and allows for up to Unlimited roll & 50 memory.

Free version
- In-app advertisements & Allows for use of up to 20 rolls & 5 memory.

For sale version (In-app purchase)
- No advertising & 100 roll available.
- No advertising & 30 memory is available.
- No advertising & Unlimited roll & 50 memory is available.

Support page
Twitter - https://twitter.com/ToDoCalc
Facebook - https://facebook.com/ToDoCalc
google+ - https://google.com/+SkywalkerLinkToDoCalc

We are planning on making more updates to make the calculator application even more useful to use. Please stay tuned to our development progress.Thank you for your support!

What’s New

Version 2.1.0

Version 2.1.0 - UPDATES

◎ strengthen the role editing function
◎ improve the menu screen
◎ trial premium features and advertising display of the specification change
◎ correction of minor display bug

"ToDoCalc" has been updated to version 2.1 !!!
To improve the roll re-edit function and menu screen and is appreciated by all means available "ToDoCalc" became more convenient !!

Ratings and Reviews

4.5 out of 5
2 Ratings

2 Ratings

App Privacy

The developer, Yozo Okada, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Yozo Okada
36.4 MB

Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese

Age Rating
In-App Purchases
  1. No adv & 100 roll available $2.99
  2. No adv & 30 memory is available $2.99
  3. No adv & Unlimited roll & 50 memory $4.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

You May Also Like