Calculator ∞

Shown for US

• Price: $5.99
• Unlimited OCR/Writing 3 Months — $3.49/month
• Unlimited OCR/Writing 3 Months — $8.99/quarter
• 400 AI Recognition & Queries — $0.99
• 900 AI Recognition & Queries — $1.99

Last verified 6 Aug 2026

Shown for US

4.7 6315 ratings · App Store

1. 5/5Great 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.

   The emusifyer · 6 Aug 2026

2. 2/5Update is terrible

   I have used this calculator for a couple years now and it has been a lifesaver for my calculus classes. But this new update is terrible and yes I have given it a few days to get use to it and I still don’t like it. It seems like they made all the buttons smaller and took the border around the numbers away so it is difficult to distinguish one button from another. The input screen has shrunk it use to be about a third of the screen and now they have made it a single line below a bunch of previous calculations making it hard to it’s distinguish between current input and past. Also when you go into the history and insert an expression from a previous calculation it doesn’t always fit on a single line making it hard to work with. And worst yet they removed some functions. In response to a review earlier the developers mentioned all the many new functions the calculator has and thats great, but the problem is they REMOVED some functions at the same time so it’s great that you added but you removed some of the functions I used most frequently. For example you use to be able to put in something like (5 + x + (x/(x+3))) and have it combine to a single factored expression and now you can’t. The algebra version of the calculator has changed as well making it more complicated, I just want to know what x equals, I don’t understand why they made that move convoluted. I get that it looks more sleek and modern but I think a simple “if it ain’t broke, don’t fix it” mentality would have helped here.

   camper7318 · 6 Aug 2026

3. 1/5Strange 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.

   Carnack13 · 6 Aug 2026

4. 5/5If you need to use a calculator often, it is near perfect!

   Buy this if you need to use a powerful calculator often. The small price is definitely worth it since it isn’t a subscription and there are many functions and tools. This helped take off so much homework! I just tested it out and the ai help thing is amazing. Edit: One thing tho, it would help if the equation solver had some feature where you enter an equation and the app figures out what you entered and automatically does the calculation for that equation (but there should still be a way to manually select the equation). It would also help if there was a formula chart in the [?] section.

   Xinhao C · 6 Aug 2026

5. 4/5You 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.

   Magic Spencer · 6 Aug 2026

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