Calculator - Editable History
Edit History, Tax & Reference
Free · Designed for iPad. Not verified for macOS.
Calculator — Editable History, Tax & Reference.
A simple, powerful calculator with a memo-style editable history. Tap any past calculation to edit the formula or equation, name your result, and reference it in your next math problem. Includes one-tap tax buttons and a notebook-style history for everyday math.
No account registration, no subscription, free to use. Your calculation history is saved only on your device — never uploaded to our servers.
Features
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■ Editable History
Tap any past calculation in the history to edit the formula. Fix a typo, change a number, or update an equation — the result recalculates instantly. No other calculator lets you edit past math like this.
■ Named Results & Cross-Reference
Name any calculation result (e.g., "Rent", "Groceries", "Tax") and reference it in future formulas. Use the calculator as a math notebook for budgets, expenses, or any everyday math.
■ One-Tap Tax Buttons
Add or remove tax (consumption tax / sales tax) with a single tap. Customize the tax rate for your region. No more manual percentage math.
■ Full Calculation History
Every calculation is saved automatically in your history. Scroll back anytime to review past results, and tap any entry to edit it. Perfect for keeping track of a long series of calculations.
■ Customizable Themes & Fonts
Choose from multiple color themes and font sizes. Make the calculator easy to read for any age or visual preference.
■ Dark Mode Support
Automatically adapts to your system appearance. Comfortable for the eyes when doing math at night.
Recommended for
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■ Anyone tired of calculators with no editable history
■ People who need a memo-style calculator for budgets and expenses
■ Students who want to reference past results in new math problems
■ Anyone calculating tax or splitting a bill in everyday math
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Free, simple, and reliable. Download now to get the best editable history calculator with tax, formula reference, and named results.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Kouichi Yamaguchi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kouichi Yamaguchi
- Size
- 32.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 12 more
- English, French, Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Vietnamese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 まるさんかくしかく