CALCU Stylish Basic Calculator

Designer Calculators

Contains adsIn-app purchases

About this app

Smart calculator CALCU™ is your scientific and basic calculator app for all your math problems from basic arithmetic to intricate scientific equations. Our simple scientific calculator offers a comprehensive range of features to cover both basic and advanced calculations:

1️⃣ Basic calculator: Perform fundamental math operations such as addition, subtraction, multiplication, and division with precision.
2️⃣ Scientific calculator: Dive into an extensive range of scientific operations, including:
▪️ Trigonometry: Sine (sin), Cosine (cos), Tangent (tan)
▪️ Hyperbolic Functions: Hyperbolic sine (sinh)
▪️ Constants: Pi (π), Exponent (e)
▪️ Logarithmic Functions: Log base 2 (log2), Natural logarithm (ln), Common logarithm (log)
▪️ Exponentiation: Powers including squaring, cubing, and more
▪️ Factorial: Factorial calculations (X!)
▪️ Roots: Square root, cubic root, and beyond
▪️ Derivative and Integral Calculations: Compute derivatives and integrals for calculus problems.
▪️ Equation Solver: Solve complex equations with ease.
3️⃣ Calculator with History: Keep track of all your calculations with ease. Quickly access and review previous calculations.
4️⃣ Calculation Notes: Attach context-rich notes to your calculations for enhanced clarity and understanding.
5️⃣ Calculator with Memory: Save and retrieve previous calculations effortlessly, ideal for handling extended or complex problems.
6️⃣ Customizable Themes: Personalize your calculator with various themes to suit your style, from classic designs to vibrant and unique looks.
7️⃣ User-Friendly Interface: Enjoy a sleek, intuitive design for a smooth and efficient user experience.
Experience the perfect blend of simplicity and advanced functionality with CALCU™, your go-to smart calculator. Enhance your mathematical toolkit with this stylish, reliable, and powerful best free calculator, designed to make math calculations effortless and enjoyable daily.

Ratings and reviews

Great, simple calculator app! I really like having memory keys and the ability to view a history of my previous calculations. I'm just using a plain black background, but some folks may like the extra background choices available. It was well worth the small upgrade price to get rid of the ads; they seem to be the main thing that other reviewers have complained about. Personally, I have zero tolerance for ads so I'm always willing to pay to remove them if the price isn't ridiculous.

App is solid as it usually has been for me over the years. However, a recent update is now asking for a $12 annual or a $25 one-time purchase for "Premium"? Problem is, I paid $2 for Premium back in 2019 when it just removed ads. There appears to be no honoring of automatic grandfathering. Anyone else who paid for previous versions should potentially be aware of this, and the developer should make a note of doing right by their legacy customers by not moving the goal post for what "Premium" is.

I didn't know this was even possible, but this app will now TAKE OVER your phone with a full screen ad when you are NOT using the app. I've been trying to figure this out for a while, but about once or twice per day a full screen ad will take control of my entire screen with no "X" or simple way to close the ad. This entire time I thought I had been accidentally clicking ads in apps, but no! It's been CALCU! Horrible tactic!!! I've had a 5 star review here for 5 years. Not anymore.

What’s new

✓ App performance has been improved.
✓ Minor issues reported by users were fixed.
✓ Please send us your feedback!