CalcNote - Notepad Calculator

Contains adsIn-app purchases
18.1K reviews
Content rating
Everyone
1M+
Downloads
Content rating
Everyone
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About this app

Type a calculation like a note and the answer appears instantly. No equals button.
Write many calculations on one screen, mix text with math, and edit any line at any time.
CalcNote is a notepad calculator that combines the ease of a calculator with the power of a spreadsheet.

Example: comparing prices while shopping

Shop A
USD 18 * 2 items + USD 4 (shipping)

Shop B
USD 19 * 2 items (free shipping) + 8% (sales tax)

Shop C
USD 18.30 * 2 items + USD 5 (shipping) - USD 2 (points)

Because notes and math live together, every calculation still makes sense when you read it later. Save your work as files, print it, or share it by email.

[What you can do with CalcNote]
- Compare prices and find the best deal while shopping
- Track household expenses and plan a budget
- Calculate sales tax, discounts, and percentages
- Estimate travel costs within a limited budget
- Use variables and line references like a spreadsheet (hourly wage = 15, daily wage = hourly wage * 8 ...)
- Break a complex problem into simple steps and reuse previous results

[A full calculator under the hood]
From everyday math to business and engineering, CalcNote supports:

- Percentage and tax (inclusive/exclusive) calculations
- Unit converter (length, area, volume, mass, temperature, time, speed, fuel consumption, pressure, work)
- Currency converter (156 currencies and 5 cryptocurrencies)
- Scientific calculator functions
- Trigonometry (degrees, radians, gradians)
- Financial functions (compound interest, loans)
- Aggregates (sum, average, variance, standard deviation)
- User-defined functions in JavaScript
- Logarithms (log10, log2) and natural logarithm
- Permutations, combinations, factorial
- Squares, powers, exponential functions, square and cube roots
- Maximum, minimum, median
- Rounding: round, floor, ceiling, bankers' rounding
- Quotient and remainder of division
- Hexadecimal, octal, binary, complements, and bitwise operations
- Variables and reuse of previous results

[Make it your own]
- Change fonts and text size
- Customize almost every color, or restyle the built-in themes
- Arrange the keypad layout freely
- Toggle key sounds and vibration
- Set rounding methods, tax rate, precision, and decimal places
- Define your own constants and functions
- Reorder or hide menus
- Adjust grammar such as decimal comma and comment symbols

Disclaimer
burton999 is committed to providing a high-quality, reliable, and accurate calculation tool through CalcNote. While we strive to ensure the integrity and accuracy of calculations, results may vary depending on inputs and context. Please verify critical calculations independently. burton999 assumes no liability for any direct or indirect damages arising from the use of CalcNote.

CalcNote aims to offer Soulver on Android.
Special thanks go to Zac Cohan, the creator of Soulver.

More than a decade after its first release, CalcNote is still actively developed and improved. It is free to download, so give it a try — once you get used to CalcNote, you may never go back to a traditional calculator.
Notepad calculator: see every step, edit anytime, convert units and currency.
Updated on
Aug 28, 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.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • Data can’t be deleted

Ratings and reviews

17.7K reviews
A Google user
February 25, 2020
I love CalcNote. I like being able to use the alphabet & numbers, for taking notes on each mathematic step. I'm thankful for it very much. It's simplicity is my favorite part. I also like how you can save it in separate files. Thank you for making such an app! The only thing I'd change is, if possible, making it so it can automatically save in Google drive, rather than the device.
31 people found this review helpful
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burton999 calculator developer
February 25, 2020
Thank you for using CalcNote and writing a nice review. I provide CalcNotePlugin for Drive as a paid app ($0.99). This plugin allows you to automatically backup your files and drafts to Google Drive. Best regards,
Eugenio Pillkahn
November 25, 2025
I like the app a lot and there are not many apps that do this with all the customization and easy to understand. The only complain I would put is the cost. I read a comment where you mentioned you prefer to put it as a one payment rather than a monthly subscription. I was looking for that options since all I can see is a monthly/yearly subscription. I have purchased a few calculator apps and this is by far the best for what I need it. If there is a buy full cost I would get it but no subscriptio
6 people found this review helpful
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Lost Soul
December 10, 2025
Ruined by ads. I understand the developer needs to make money with ads, I get, truly I do. But now when I open the app there is a five second count down timer from the app itself telling me premium members don't get ads. Bread in a bakery. Now I get annoying pop ups CONSTANTLY. The banner ads were fine, they were there, pronounced and made perfect sense. Now this app, one that used to be my favorite is another slop app looking for a monthly subscription for it to achieve the bare minimum. pity.
13 people found this review helpful
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burton999 calculator developer
December 10, 2025
I understand your frustration, and I know some users may leave because of these changes. Still, stable revenue is necessary to keep development going, and after careful consideration, this was the most sustainable path. The early results confirm it. There are many calculator apps on Google Play, so please choose the one that best fits your needs.

What’s new

### v2.25.110
1.Added a simple passcode security feature. (Pro plan only)
2.Added the ability to copy folders. (Pro plan only)
3.You can now set separate themes for Light Mode and Dark Mode. (Pro plan only)
4.Made some small improvements and fixed a few bugs.

### v2.25.109
1.Made some small improvements and fixed a few bugs.

### v2.25.108
1.Detailed feature improvements have been made based on user feedback.
2.Fixed multiple minor bugs.