電卓メモ - 自動計算メモ帳

Contains adsIn-app purchases
Content rating
Everyone
1+
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Content rating
Everyone
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About this app

[Detailed Explanation]
"Calculator Memo" is a calculation note app that automatically extracts and calculates only the numerical parts as you freely write down text and numbers, just like taking notes.
There's no need to open a calculator and re-enter numbers, nor is there any need to copy calculation results into a notepad. Simply write down whatever comes to mind, and before you know it, the calculations are complete.

■ Recommended for people who:
・Want to keep track of totals while shopping, noting down items like "Milk 220, bread 180..."
・Want to quickly calculate split bills or reimbursements with friends on the spot
・Want to quickly record scores in card games or board games during a match
・Want to use it as a simple household budget, compiling totals in a free format while looking at receipts
・Want to jot down simple calculations like quantity x unit price while on-site or working
・Want to keep track of ingredient costs and quantities while doing DIY or cooking
・Find calculator apps uninteresting, but find calculations in a regular notepad cumbersome

■ Main Features

・Free-form text + automatic calculation

Automatically extracts numbers written in text and performs addition, multiplication, division, parentheses, and percentage calculations on the spot. Discount calculations like "1000 x 0.9" and expressions using parentheses like "(300 + 200) x 2" can be written directly. Calculation results are displayed prominently to the right of the line, allowing for immediate confirmation while writing.


* Subtotal Function
Simply long-press the range you want to sum to insert a subtotal row. The subtotal retains a reference to the original row, so it automatically recalculates even if you later change the numbers. This is convenient for uses such as summarizing only a portion of a shopping list.

* "Do Not Calculate" Setting
Rows containing numbers, such as dates, phone numbers, or addresses, that you don't want calculated can be excluded with a single tap (an "Aa" mark appears to the right of the memo text for easy identification). Tapping again will return them to the calculation.

* Dedicated Number Keyboard
Features an easy-to-use dedicated keyboard optimized for inputting numbers, arithmetic symbols, parentheses, and percentages. Switch between this and the standard keyboard at any time with a single button in the lower right corner of the screen.

* Multiple Note Management
Manage notes (tabs) separately for different purposes, such as "Shopping," "Splitting Bills," and "Game Scores." Notes can be freely added, rearranged, and renamed.

* **Total Display for the Entire Notebook**
The total amount for the entire note is always displayed in the lower left corner of the screen (subtotals are not included in the total to prevent double counting). This can be toggled ON/OFF in the settings.

* **Theme and Appearance Customization**
Choose from 12 themes in total: Dark/Light x 6 colors (Amber, Blue, Green, Purple, Rose, Gray). You can freely combine font sizes (Small, Standard, Large) and screen decoration effects such as glitter, cherry blossoms, balloons, and airplanes. Customize the look to your liking for a more enjoyable user experience.

* **Backup and Restore**
You can export and import memo data as files. No Google account or other login is required, making it useful for data migration when changing devices. A subtle banner will notify you if you haven't backed up recently.

* **Example of Use**
If you type "Milk," then press Enter and enter "220," the amount will automatically appear on the right. Similarly, by adding "bread" and "180," and "orange" and "100 x 3," and selecting the range together, a subtotal will be inserted instantly. The total amount will automatically remain displayed in the lower left corner of the screen, so there's no need to switch to a calculator app. Even if you rewrite what you've written later, the amount will automatically update each time.

■ Frequently Asked Questions

Q. Are full-width numbers included in the calculation?

A. Only half-width numbers are included in the calculation. Numbers written in full-width characters remain as notes and are not used in calculations.

Q. Can I use it offline?

A. Yes, note creation, calculation, and saving are all completed within the device; no communication is required (except when ads are displayed).

Q. Where is the data saved?

A. All data is saved only on the device. It is not sent to any external servers or cloud.

Q. What happens if I have an unfinished formula?

A. Incomplete formulas like "100+" will not display the calculation result. The calculation will be performed automatically once the formula is complete.

■ About Ads
To maintain the app, banner ads are displayed at the top of the screen. You can permanently remove ads by purchasing them once from the settings screen.

■ About Privacy
All memo content is saved on your device and is never sent externally. Please see our privacy policy for details.

This is a simple yet incredibly easy-to-use notepad for everyday calculations and summaries. Please give it a try!
Simply write the numbers, and it will automatically calculate them. A free-form notepad-style calculator app.
Updated on
Sep 12, 2026

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.
  • This app may share these data types with third parties
    Financial info and Device or other IDs
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

- 行のコピー・貼り付けに対応しました
- 元に戻す機能を改善し、1文字単位で正確に操作を取り消せるようになりました
- 文字が混じった行でも計算できるようになりました(例:「りんご×3」)
- 演出(エフェクト)を7種類追加しました(雪・紙吹雪・泡・流れ星・花火・蝶々・肉球)
- 表示の高速化・不具合修正

これまでの主な機能:
- 自由記述・数式計算・小計機能
- テーマ・フォントサイズなどのカスタマイズ
- バックアップ・復元機能
Content rating
Everyone
In-App Purchases
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App support

About the developer
NYX WORKS
nyx.works.official@gmail.com
1-6-16, KANDAIZUMICHO YAMATO BLDG. 405 CHIYODA-KU, 東京都 101-0024 Japan
+81 90-1834-8395