# Calculator Pro+ for iPad. — Basic & Scientific Calculator > Basic and scientific calculator with unit converter for iPad. (iPhone/iPad app by Apalon Apps.) - Source: https://appshunter.io/ios/app/calculator-pro-plus-for-ipad/id749113886 (this page in markdown: same URL + `.md`) - Developer: [Apalon Apps](https://appshunter.io/developer/749046894) - Category: Utilities, Finance - Price: $2.99 - Rating: 4.70/5 from 14,742 App Store ratings · 50 written reviews indexed - Age rating: 4+ - Requires: iOS 7.0 · 89 MB - Languages: Arabic, English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Chinese and 4 more - Released: 2013-12-15 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/calculator-pro-plus-for-ipad/id749113886/reviews.md ## What is Calculator Pro+ for iPad.? Calculator Pro+ for iPad is designed for everyone looking for simplicity and functionality. You can enjoy using a standard calculator for basic operations or extend it into a scientific one for more complex calculations. Just tilt the device into landscape mode!  Need to convert one unit to another? With the intuitive and beautifully designed converter you can easily switch between currencies, temperatures, length, speed and other numerous units. Features:  • Two modes are available: do basic calculations in Portrait Mode or go advanced in Landscape Mode • Degrees and Radians calculations • History Bar: see your full calculation history directly on the screen • Track Calculations History: view, save, delete selected equation or clear all • Universal converter with 19 categories, including: Currency, Length, Time, Weight, Pressure, Temperature, Area, Data Size, Energy, Force, Frequency, Power, Acceleration, Density, Angle,Typography, Volume, Fuel Consumption and Speed • Handy text search to find categories and units instantly • Multitasking mode: bring in Calculator Pro+ while viewing web pages, photos, taking notes and more to get results instantly! • Calculator Pro+ is now accessible via VoiceOver as well • Pick the look from a bunch of skins to suit your own preference (Modern, Rose, Wood, Old, Doodle, Minimalistic, Zombie, Yellow, New Year) • Memory buttons to help you out with complex calculations • Accidentally input the wrong number? Just swipe with your finger to edit it! • Copy and paste results and expressions directly into the current calculation • Comment equation, e-mail calculation results and comments Now you can do calculations on the go seamlessly! For complete access to all Calculator Pro+ features, you will need to allow access to the following: *Location data - this will enable automatic currency selection in the Converter. Privacy Policy: http://apalon.com/privacy_policy.html EULA: http://www.apalon.com/terms_of_use.html AdChoices: http://www.apalon.com/privacy_policy.html#4 ## Key features - Basic and scientific calculation modes - Universal unit converter - Calculation history bar - Multitasking support - Customizable skins - VoiceOver accessibility ## What do users think of Calculator Pro+ for iPad.? Overall sentiment: positive **Pros** - 👍 Clean and well-designed app - 💰 Worth the money to remove ads - 📈 Useful features like calculation history - 🔢 Large, easy-to-read numbers - 🧮 Versatile with both standard and scientific modes **Cons** - 🐛 Bugs and glitches, including UI issues and app crashes - 💸 Paid version still shows ads from the developer - 🤖 Poor multitasking support, especially on newer iPads - 🤔 Confusing or unintuitive user experience in some areas - 🔍 Inaccurate currency conversion rates **Commonly reported bugs** - App going completely white with no UI elements - Difficulty closing the sliding history window - Inconsistent behavior when entering exponential values - Layout issues in landscape mode on iPad Pro **Most requested features** - iPhone version of the app - More customization options like additional skins - Ability to disable calculation history - Improved multitasking support, especially for iPad Pro ## Recent user reviews (10 of 50) All indexed reviews: https://appshunter.io/ios/app/calculator-pro-plus-for-ipad/id749113886/reviews.md ### 5/5 — Please make a version for iPhone! *2022-06-01, version 5.2* Great app. Clean. Well worth the money to remove adds. But why is there no iPhone version? The iphone calculator is too basic. I would love to have the Calculator Pro app on all my devices. I can't find anything as good as this app in the app store for iPhone. ### 2/5 — Meh, Keep Looking *2022-02-10, version 5.2* I just spent a few dollars so you don’t have to. This calculator looks plain and straight forward, which is why I initially liked it… but the UI is off in some places and bleeds into the top bar of my year-old iPad. Had trouble closing the sliding history window too and had to force close the app each time I tested. Doesn’t seem well coded or tested to me. It also just asked to know my location when launching it today… I decided that there is no real reason a calc needs to know that, It felt scummy. I just uninstalled it and will keep looking. Hope this helps someone. **Developer response:** We understand your fears when granting extra access to our app but we strive to always make our apps as easy to use as possible. ### 3/5 — Made to buy AGAIN *2021-09-13, version 5.2* Bought this right after I got my new IPad air. Installed it, loved it… then recently it went all white! There was NO app showing at all when I opened it, just a white screen. So I figured there must have been a glitch and thought I would delete it and reinstall but it wouldn’t recognize that I purchased it even though it said on my screen. I had to find a new version for 2.99 and install just to return to what I had been using all along?! That’s not right. **Developer response:** We appreciate if you could contact our support service (support@apalon.com) with a more detailed description of the issue so that we could try to resolve it for you. Thank you in advance for your cooperation! ### 5/5 — Buy *2020-07-18, version 5.2* I’ve been using this APP for about 1 year 6 months and today paid the $3 bucks to never see those AMAZINGLY LOUSY adds again. The computer calculator... here feels like it’s Perfect for The Pro. You will need it, trust me on that! ### 5/5 — Calculator Pro plus *2020-04-13, version 5.2* Pretty is only a small part of the faithful useful app I find when I click here. I have been thankful every time For having made the decision to buy this. ### 2/5 — I Paid for No Ads... but *2020-02-22, version 5.2* OK - I really liked this calculator; however, I paid for no ads. While they are not always present, when the history window is open you have an “X” to close it under an “i” for info. Which causes accidental touching of the “i” very easy! That brings you to the Ap Developer’s other Aps to get. In essence and Ad for their other products. Very frustrating and will be requesting my money back. I like to have my history open to see my math. **Developer response:** Thanks for your feedback. We appreciate your comment and will consider it while working on future versions of the app. In case you have any ideas on how the app could be improved - please let us know at support@apalon.com. Thank you in advance for your cooperation! ### 5/5 — Calculator *2020-01-21, version 5.2* It works has many more features than I need. ### 2/5 — Changed all of a sudden *2019-12-14, version 5.2* Been using the pro for long time w/o the advertisements, all of a sudden , just over nite I was trying to use this morning the numbers on the keypad are very large, cannot see the calculations screen. Rebooted iPad but had no effect, deleted from desk top, reloaded it now I have very large numbers with framing advertising. Can not make the calculator fit the screen like it was yesterday. My IOS 13.2.3 is what I use , I cannot provide more specific info, other than the above description. Had used it the nite before when I went to use the calculator it was very large with only a few numbers visible on my screen even in landscape, again I tried the steps above before I deleted it and reloaded it. Had to pay for the pro again to get rid of the advertisements. **Developer response:** Thank you for reaching out. It's important that we understand how the issue occurred. Please, can you provide more details on this matter to our support service (support@apalon.com)? We are willing to help! ### 5/5 — Great calculator *2019-11-30, version 5.2* I’ve used this calculator for several years and have not been disappointed. ### 1/5 — JUST TERRIBLE *2019-11-21, version 5.2* This thing worked good for a while and then the graphics blew up! Could only see part of the calculator on the IPad. I latest IPad OSX and did everything possible to delete the app then shut the iPad down and restart reinstall. It works for a little then repeats the mess. I reached out to the developer and sent the, a screen shot and they suggested stuff I already did. They had no solution and don’t apparently care. I would get it no stars in I could. Stay away from this! **Developer response:** Thank you for reaching out in the comments. We are aware of the issue and already doing our best to fix it. We apologize for any inconveniences and hope that you can wait till we get a proper version ready. Thank you for your cooperation! ## Frequently asked questions about Calculator Pro+ for iPad. ### What does Calculator Pro+ for iPad do? Calculator Pro+ for iPad provides both basic and scientific calculation functions. It also includes a universal unit converter for various measurements and currencies, a history bar to track calculations, and multitasking capabilities. ### How do I switch between basic and scientific calculator modes? You can switch between basic and scientific calculator modes by simply tilting your iPad into landscape mode. Portrait mode offers basic calculations, while landscape mode unlocks the advanced scientific functions. ### What types of units can be converted? The app features a universal converter with 19 categories, including currency, temperature, length, time, weight, area, volume, and speed, among others. This allows for a wide range of conversion needs. ### Is this app free to use? Yes, the application is available for free. There are no in-app purchases or advertisements mentioned in the provided description, suggesting a completely free experience. ### Can I use this app while using other apps on my iPad? Yes, the app supports multitasking mode. This allows you to use Calculator Pro+ alongside other applications like web pages, photos, or notes, enabling you to get results instantly without switching screens. ## Version history (last 1 release) ### 5.2 — 2019-11-04 - Performance and stability improvements for flawless work on iOS 13. Thank you for your continued support and comments submitted by email! Don't hesitate to share your impressions and feedback with us via support@apalon.com ## Apps similar to Calculator Pro+ for iPad. | App | Rating | Price | Category | | --- | --- | --- | --- | | [Simple Calculator.](https://appshunter.io/ios/app/simple-calculator/id1324926551) | 4.6 (1,424) | Free | Utilities | | [Calculator!](https://appshunter.io/ios/app/calculator/id432627778) | 4.8 (4,206) | $0.99 | Utilities | | [Calculator #1 for iPad](https://appshunter.io/ios/app/calculator-1-for-ipad/id1513523193) | 4.3 (57) | Free | Utilities | | [Panecal Plus Sci. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*