Calculator is a clean, easy-to-use calculator app for everyday math and more. It handles basic calculations and scientific functions when you need them and keeps a history of your past results so you can quickly go back and check or reuse them. With its classic design, it feels familiar and straightforward—perfect for quick sums at work, school, or home.
AVAILABLE FOR FREE
• Basic & Scientific Calculator
• Great Visibility; Big buttons for easy calculations
• Live Currency Converter; get exchange rate prices
• History Tape; Track all calculations, taxes, and expenses
• Equation edit function
• Calculate with Degrees or Radians
• Memory Banks
• Choose your Decimal Notation
• Set the Number of Decimals
• Available in 12 languages
• Made for iPad & iPhone
• Support Split View & Dark Mode
BASIC AND SCIENTIFIC
Rotate your device to access all scientific buttons. Or if you prefer calculating in portrait mode, simply swipe left.
YOUR EXPERIENCE IS IMPORTANT TO US!
As your experience is important to us, we’re happy with your feedback, questions, and suggestions. Please share any support as our team is always ready to help via support@impalastudios.com
Mathematical Operations
Addition, Subtraction, Division, Multiplication, Percentages, Square, Cubic Exponent, Nth Exponent, Square Root, Cubic Root, Nth Root, Engineering Exponent, Factorial, Power of Two, Power of Ten, Power of E, Natural Logarithm, Common Logarithm, Binary Logarithm, Sine, Cosine, Tangent, Arc Sine, Arc Cosine, Arc Tangent, Hyperbolic Sine, Hyperbolic Cosine, Hyperbolic Tangent, Hyperbolic ArcSine, Hyperbolic Arc Cosine, Hyperbolic ArcTangent, Multiplicative Inverse, Random Number Input
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Calculator (C) 2011 Impala Studios
Terms & Conditions: https://impalastudios.com/terms
Privacy Policy: https://impalastudios.com/privacy
Your Calculator app is 100% the absolute best calculator app I have ever used. I have diagnosed ADHD, and trying to keep a budget can be difficult (I have literal notebooks filled with budgets from years of trying - lol). The history function & feature on your app has allowed me to go back when I forget whether I included a bill amount, and verify whether I need to recalculate. It has saved me so much time & money in my many years of using it. Your Calculator app was the first I ever tried on my very first iPad, and I have downloaded it on every iPadOS device since. It changed the way I do all financial calculations. I am just so happy to be able to support this company in any way, even just with the annual subscription to this app. Thank you for designing something simple, practical, and completely functional.
Constant developer-built interruptions in PAID version
Jane Argh
I really wanted to love this - it’s a pretty functional little app I used to use to do calculations very quickly on my job (emphasis on QUICKLY). I liked it enough to pay $5.99/year for this version. The trouble is, the app opens (now much more slowly after a previous update) with a screen to push you to purchase their $5.99/week version. You can only click out of this window, no other options. Then after finally getting to the actual calculator and performing 1-2 functions, it gives you yet ANOTHER screen to push you to buy their premium version. There are only 2 options here: ‘download’ or ‘remind me later,’ YOU CANNOT TURN THIS OFF. I’ve checked all settings. IT TAKES FOREVER JUST TO GET TO THE ACTUAL APP. This makes it completely unusable for me, I paid to get a version with immediate access. I’d even be happy with an occasional pop-up window like other apps do. For a paid app, I don’t think it’s inappropriate to expect less built-in lag. Maybe it’ll work for others if it’s an app left open all the time (I usually close apps when I’m done with them). But for me, definitely not worth the money.
Ads
Tired of apps overdoing ads
I switched from Samsung to Apple. It’s been two years and frankly I still miss some features of my Samsung. One of them being the calculator. I run a small business primarily through my phone and regularly need to make multiple calculations with the results I just calculated. My Samsung would let me copy a result and plug it right back in… I greatly miss that feature. I downloaded this app and have found it adequate to meet my needs. There have always been ads and I understand I’m using a free app so ads are how it is funded…. HOWEVER recently the ads have been overwhelming. As soon as I open the calculator remembering the numbers I just read from a different app that I need to calculate there’s ads now with multiple screens I have to click through and they are happening constantly. I have found myself opening the app getting through the ad and then going back to reread the figures to make sure I don’t make a mistake. It’s easily doubling if not tripling the time it should be taking me. At this point it would be quicker for me to go back to the original app and just open a note and record my own history.
Developer Response
Hi, and thank you so much for taking the time to share your valuable feedback with us. We are sorry to hear about your experience. Although ads are part of your experience when you don't have an active subscription, we do not intend to trouble you with our ad placements, and we'll take your feedback into account and improve their placement and frequency. If you have any further feedback, please feel free to let us know through the Frequently Asked Questions section or directly at support@impalastudios.com.
Ads are out of control
NoFoolmePls
As other reviews note, the app is well designed and does math as expected. I also use the “ad supported” free version. I’ve been using this app for probably four years. My two concerns prompting me to look for another calculator app is indeed the (clearly getting out of control) advertising assault. I’ve never minded the typical, fairly small bottom of app advertising scroll and -OCCASIONAL- full screen advertising hit that only took one easy to see (X) to close that full page ad to continue. BUT, recent “updates” now have this app an advertising pain. Full page ads are a constant, the “X to close” discretely shaded within the ad, with another right on the heels. While I understand what free gets me, regarding the “subscription”, one it’s not cheap, and two, RECURRING not cheap is simply a full stop. The terms of service and privacy policy already spell out how much data about me this app collects and obviously resold for company revenue. Just SELL ME THE APP for a reasonable price. And be done with me. A subscription suggests constant new material and varying product. And that would be??
In this latest update you'll find:
• minor bug fixes and performance improvements.
Thanks for your support, and enjoying using our app!
Version 3.12.0
The developer, Impala Studios, 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
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Impala Studios B.V.
Size
166.9 MB
Category
Utilities
Compatibility
Requires iOS 15.0 or later.
iPhone Requires iOS 15.0 or later.
iPad Requires iPadOS 15.0 or later.
iPod touch Requires iOS 15.0 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
