Grow your in-app revenue
while we take care of your subscription management.
Mobile
SDK by Qonversion.
Price Intelligence based on:
213,534
apps aggregated
8,172,290
in-app prices defined
89
main categories
In-App Purchase Price (Subscription or Non-Recurring)
vs. average for the Education category, $, by region
Build, analyze, and grow in-app subscriptions
with the most powerful mobile SDK for subscriptions
User Reviews for Calculator ∞
Fantastic functionality (pardon the pun)
This calculator does all kind of neat stuff. Without restating its functions (the app description does that well), I can say that as a scientist, engineer, and pilot, this calculator exceeds my very demanding expectations in so many ways. It makes beautiful graphs that are traceable and zoomable. It works with equations with ease, even complex ones. Calculus and statistics are no problem (again, pardon my pun) for this thing, too. I’d love it if it had a built in E6B, but other than that, it has everything! I totally recommend it to students, teachers, and professionals in STEM!Great work devs!
Great calculator, but ONE super annoying problem
It’s a great, feature filled scientific calculator, but they made the ridiculous decision to put the “options” button slightly overlapping the “0” button, resulting in accidentally opening the options frequently. It’s a bizarre decision, given that sliding the keyboard up a very small amount would solve the problem while only reducing the size of the output screen a negligible amount. Or they could have it overlap any button that isn’t used in approximately 1/10 of every equation I enter. Or just put it in the lower corner of the display area. I feel like they essentially places it in the worst possible location, and it makes me not want to use an otherwise great app.
Strange user interface
This was my most used application until the August 28 update. A graphic interface for a calculator should look like a calculator, not just a bunch of numbers and functions thrown on the screen. The layout is awkward to say the list. This is very disappointing and a perfect example of what happens when you try to improve what was already great. Follow up, September 12, 2020: I took the developer's advice and gave the update a chance. I am now twice as disappointed. I have to wonder if the developers have realized that this "new and improved" revision has taken this application from a 4+ star review ranking to a 2 star. Who ever designed this new UI needs to take a vacation. This is not going to attract new and young users. In addition to the awful user interface, my screen does not display any menu, options or help screen. The keys are too small; unless your fingers are the size of a pencil, data entry is quite unpredictable and frustrating. I have no way of accessing any of the "new features" of the application. Perhaps this is a hardware compatibility issue. I am using a third generation iPad with IOS 10.3.3 which according to the developer is compatible with the app. All I can confirm is that I purchased an application that has been revised without notice to a point where it no longer resembles what I paid for and worst of all, may be incompatible with my iPad.
Used to be much better
This calculator was much better in the prior version and I would have given the previous version four stars. The new interface has drastically increased my calculation time. First, the up arrow used to accurately scroll through historical calculations that could then be edited in place. This no longer happens. Also, editing a historical equation requires you to now “insert” it, which adds keystrokes and can cause errors if you already have typed something in. Second, the unit conversion has the start of something good but still lags way behind the previous version, which was a bit clunky as well. It needs to have the ability to drop down available conversions “to” once the “from” is selected and it needs to get back the ability to switch the from and to positions. And, it would be nice to have favorites back for rapid input. Finally, the calculation lines are more crowded than before making it more difficult to read results. The new interface has some advantages and it is nice when things get refreshed, but this was a premature rollout and until the above are fixed I am, unfortunately, in the market for a new go-to calculator.
Full blown TI-like calc on iOS
I used the free version for a year or so and bought pro when on sale. Best decision hah! The pro version of this calc can do basically anything. There are even some calculus level functions I’ve only ever seen on big TI calcs like the 89. I love that it can be a side app on the iPad Pro next to another app, and its size is adjustable without UI problems. Great for multitasking. Only criticism is that I can’t set it as my default calculator app (Apple problem). Also, could use a GUI update, feels a little 2013 when it comes to the graphical assets.
You have to pay for new features
I love this app. It’s an amazing app and a great calculator. However the new UI is very strange. It used to be set up in a much better way, but it looks much more aesthetically pleasing now then it did before. It makes sense why they changed it. However my problem lies with me not being able to use the camera function without paying a EVERY MONTH. It doesn’t make sense why they would make you pay for it when apps like Photomath exist. I get that you need to use a third party software that must cost a lot to borrow, but c’mon. You guys should try to develop the best software out there. I gotta say all your other functions are amazing. If you develop your own amazing one then you wouldn’t really have to charge us for it. I get that this way is easier, but no one is actually going to buy it unfortunately. They already payed a decent amount for the app. Great idea to have a photo mode, but sadly poor execution.
Horrible update
This new User Interface has destroyed the seamless experience that this calculator offered before. Key strokes have a lag which causes the calculator to miss the some of the keys that were pressed. The History list now requires you to press insert when you want to make changes in an equation you used before. I can’t even explain how much this update has made it difficult to continue using this calculator. Developers should be fired for trying to fix something that didn’t need to be fixed.
Graph intercepts are inaccurate
I like this calculator for the most part, but the graphing ui needs an overhaul in usability (workflow) and accuracy.Also, I try to click on the x-int for a simple parabola and I get values for the y-axis that are close to but not zero. Zooming in or out seems to randomly affect the Y value. Options on the screen for the graph need to be reworked for ease of use. Right now it is hard to click them, and the panel that opens up under calc is just not that good. Also, having the graph accumulate lines from everywhere isn’t intuitive. I would like to have a graph only for the function list, and a quick graph for the calculator. Not both at once (or an option to change the behavior somehow)Textbook print is not working right sometimes. NumWorks and Casio 9750giii are able to properly render the complex result for (√-60)/(36), but this calculator and a few of the others I have seen for the iPhone can’t do it for some reason. They get an equivalent answer but not in the format it’s supposed to be written. That’s just a formatting issue though. I like the carbon skin the best, but I would like something less blue. Also the blue quick panel at the bottom of the screen is useless, distracting, and taking up way too much space. Settings should be in a tiny button like every other calculator. Peace out
New interface is crap
I thought I was the only one who had a problem with the new interface, but it turns out that a lot of users also have the same problem. The interface of this calculator was what attracted me to it and made me buy it in spite of the fact that I had other paid-for calculator apps that are more expensive. Now the interface is horrible and time wasting. At least give the option of being able to switch to “classic” at will
Great calculator
I use this calculator for many advanced and all of my variable based calculations for one reason - this calculator allows you to input the equation in its original form. For students, that means they can input their equations in textbook format father than a long string of numbers and variables with excess parentheses so the program can sort it out. A couple things I would like to see. Needs and updated manual. Also, still can’t find the infinity button needed for some calculations. Also, would like the ability to tell it which variable to solve for. Right now it automatically solves for x but there are times i have multiple variables and need specific ones. Also, I would like to complement this developer for always upgrading the existing app instead of trying to get people to repurchase a newer version as other app developers have been trying. I feel confident this developer won’t let his existing customers down and that says a lot these days.
Description
◉ Top Paid Educational Apps in US, UK, AUS, GER,... ◉ QAppReview.com Rated 9/10 ◉ Users Reviewed: "Top Class Calculator !" The BEST Alternative to Graphing TI-83, TI-84, TI-89, Casio FX, Sharp EL,... Calculator Infinity (∞) – The sleek, multi-function calculator for iPhone/iPad is proud to offer a variety of features to satisfy all ranges of customers: The App possesses a powerful math core and algebra engine with mathematical display support, making it a viable tool for everyone from those looking for basic calculation to more advanced users, such as scientific computation, programmers, engineers, and math students. Calculator ∞ makes available everything you need – including a user manual and tutorial video clips – so you can master the app in a matter of minutes! ◉ Official Website: http://iPhoneCalculator.com ◉ ADVANCED FEATURES: ▸ Step-by-step solution (Hints) ▸ Math Photos Solver * ▸ Handwriting Recognition * ▸ Well Organized of Functions ◉ GENERAL FEATURES: ▸ Universal Calculator App ¹ ▸ Support Multitasking (iPad) ▸ Support Wireless KB² ▸ Mathematical Display ▸ Edit & Export Expression/Result ▸ History Tape View ▸ Basic Calculations (+, -, x, ÷, %, Abs,...) ▸ Advanced Functions (Sin, Cos, Ln, X!, ^, √,…) ▸ Memory Variables (Including X,Y,Z,M) ▸ F(x) Customize Functions (F1, F2, F3) ▸ Unit Converter (40 Categories, 1000+ Units) ▸ Over 40 Common Constants ▸ Fraction and Degree/Angle Calculation ▸ Numeric Integral & Derivative Calculation ▸ Dual Skins (Silver Light & Carbon+) ▸ No Ads ◉ ALGEBRA FEATURES: ▸ Big Integer & Rational Number (Up to 500!) ▸ Expand and Factor Polynomials ▸ Indefinite integral & Derivative ▸ Two-side Limit ▸ Taylor Series Expansion ▸ Hints and Solutions ◉ 2D GRAPH: ▸ Simultaneous Graph ▸ Smooth Zoom & Transformation ▸ Conic Equations (Parabola, Hyperbola, Ellipse) ▸ Get Intersections, Min, Max & Special Points ◉ CLOUD COMPUTING: ▸ Advanced Two-side Limit ▸ Advanced Indefinite Integral ▸ General Equations (Accurate Roots) ◉ EQUATIONS SOLVERS: ▸ General Equations (Numerical Roots) ▸ Quadratic & Cubic Equations ▸ System of Linear Equations (2 & 3 Unknowns) ◉ REGRESSION & STATISTICS: ▸ Modify & Sort Data ▸ Single Variable Statistics ▸ Linear, Quadratic, Power Regression ▸ Logarithmic & Exponential Regression ◉ COMPLEX CALCULATION: ▸ Polar & Rectangular Notation ▸ Argument, Conjugate Function ▸ Trigonometry Functions ▸ Logarithmic & Exponential Functions ◉ MATRIX/VECTOR MODE: ▸ Support Up to 7x7 Matrix ▸ Support Complex Numbers ▸ Cross, Dot Product ▸ Det, Inverse, Transpose ▸ Cramer’s Rule Solver ▸ Numerical Real Eigenvalues ◉ NUMBER BASE-N MODE: ▸ 15 Different Bases ▸ Support Up to 32 Bits Integer ▸ Binary Operation (NOT, OR, XOR, 2’S, …) ◉ MULTIPLE LANGUAGES: ▸ English, Spanish, German, ▸ French, Japanese, Chinese (*) In-App-Purchase is required ¹: Include iPhone SE, PRO, PRO-MAX, iPad... ²: Standard English KB Calculator ∞ is not only the Calculator IT IS THE MUST HAVE CALCULATOR !!!
More By This Developer
You May Also Like
POWER SUBSCRIPTION REVENUE GROWTH
