# ToDoCalc - Best free & Smart calculator > A stylish, simple calculator with advanced memo and history recording features. (iPhone/iPad app by Yozo Okada.) - Source: https://appshunter.io/ios/app/todocalc-best-free-and-smart-calculator/id989579475 (this page in markdown: same URL + `.md`) - Developer: [Yozo Okada](https://appshunter.io/developer/989579474) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 4.67/5 from 3 App Store ratings - Age rating: 4+ - Requires: iOS 7.0 · 35 MB - Languages: English, Japanese - Released: 2015-06-16 - Data updated: 2026-08-28 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/todocalc-best-free-and-smart-calculator/id989579475/reviews.md ## What is ToDoCalc? 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 ======================================== http://www.skywalker.link ======================================== 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! ## Key features - Visual calculator with memo functions - Records all calculated history as memory - Edit and organize calculation history - Sum, average, add tax, and currency convert checked rolls - Copy sums of formulas - Customizable skins and backgrounds - Share calculations via email/social media ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | No adv & 100 roll available | $2.99 | one-time | | No adv & 30 memory is available | $2.99 | one-time | | No adv & Unlimited roll & 50 memory | $4.99 | one-time | ## Frequently asked questions about ToDoCalc ### What is ToDoCalc? ToDoCalc is a free calculator application designed for ease of use and a stylish interface. It goes beyond basic calculations by offering features like recording calculation history as memory, allowing users to leave memos, and organizing these records. ### Does ToDoCalc have ads? No, ToDoCalc does not contain advertisements. It is a free application that offers its full functionality without interruption from ads. ### How does ToDoCalc handle calculation history? All calculated history expressions are recorded as memory in ToDoCalc. You can edit the title and recording date/time of each memory, and even replace memories. This allows for detailed record-keeping, similar to managing household accounts. ### Can I customize the look of ToDoCalc? Yes, ToDoCalc offers extensive customization options. You can set your favorite picture as wallpaper, change the color and transparency of the background and fonts, and enjoy a variety of skin colors to personalize your calculator. ### What special functions does the "◎" button in ToDoCalc offer? The "◎" button in ToDoCalc allows you to perform quick operations on selected calculation rolls. You can sum, average, add tax, or currency convert your checked rolls, streamlining common financial tasks. ### Can I share my calculations from ToDoCalc? Yes, you can easily share your calculations from ToDoCalc. The app allows you to share your results and recorded formulas via email or on social media platforms like Facebook, Twitter, and Google+. ### What devices is ToDoCalc available on? ToDoCalc is available for iPhone and iPod devices. It supports screen rotation for a better user experience on these platforms. ### How often is ToDoCalc updated? ToDoCalc was last updated on June 10, 2016, to version 2.1.0. While it has not received recent updates, it remains a functional and well-received utility application. ## Version history (last 5 releases) ### 2.1.0 — 2016-06-10 This app has been updated by Apple to display the Apple Watch app icon. 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 !! ### 2.0.2 — 2016-03-14 Version2.0.2 - UPDATES ◎ Specifications change of trial premium features & advertising display. ◎ correction of minor display bug. ◎ Add a memory function. (Ver2.0.0) ◎ Add a horizontal scroll editing functions of the main roll. (Ver2.0.0) "ToDoCalc" has been updated to version 2. Did therefore equipped with a "memory function" that can be used in a variety of applications, it would be greatly appreciated by all means serving. ### 2.0.1 — 2016-02-03 Version2.0.1 - UPDATES ◎ Help/startup screen update. ◎ Specifications change of trial premium features. ◎ correction of minor display bug. ◎ Add a memory function. (Ver2.0.0) ◎ Add a horizontal scroll editing functions of the main roll. (Ver2.0.0) "ToDoCalc" has been updated to version 2. Did therefore equipped with a "memory function" that can be used in a variety of applications, it would be greatly appreciated by all means serving. ### 2.0.0 — 2016-01-22 Version2.0.0 - UPDATES ◎ Add a memory function. (recommend) ◎ Add a horizontal scroll editing functions of the main roll. ◎ Menu of additional functions update. ◎ Add trial premium features. ◎ Modification of how to use screen-startup screen. ◎ Fine display and bug fixes. "ToDoCalc" has been updated to version 2. Did therefore equipped with a "memory function" that can be used in a variety of applications, it would be greatly appreciated by all means serving. ### 1.1.2 — 2015-12-09 Version1.1.2 - UPDATES ◎ I changed the screen shot. ◎ Correction of minor display bugs. Is comfortable to use How about the "ToDoCalc"? If you have any opinions and comments, and become a reference for future improvement, it will be encouraging. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*