Calculator N+ (Open source) - Math Solver

First calculator I have found in Play Store that can solve equations, draw graphs and do everything and much more than you could ask for a phone calculator. A must-have app for anyone who is lazy enough to dig their expensive Texas Instruments calculator from their backpack (or can't afford one).

It's very good. This app will probably be able to perform most calculations you need. It comes packaged with loads of handy converters and calculation tools. I'm slightly confused about the Natural Keyboard implementation, since the app asks me if I want to install Natural Keyboard, but never seems to register that I've done so.

Developer, can you please explain how this app is Free and no Ads? I need a way to donate money to you. Best smart Calculator ever. My only complain is wish you had Black theme instead of Dark theme. Please add premium features where you can add your own formulas for calculations.

Never seen a calculator this advanced in the Play store until this one. No ads or anything! And open source too! Well done. The interface and themes could use a little work though... Like if I enable a dark theme, some of the text remains black. And it would be great if there was a black theme!

Best calculator app I have found. Lots of features and functions that are not available on other calculators. No ads is a huge bonus. I don't see an option to donate so the next best thing is leaving a good review so the author know his efforts are appreciated.

Never thought I'd get so advanced calculator in play store. I was always looking for a type of calculator that can put a typical scientific calculator to shame, and here i found. And what's the best part, it's completely free with no Ad. tan(90) thanks to the developers....

Awesome app. Lots of powerful features, great UI, and a pleasure to use. The only thing it doesn't have that I'd love to see would be if it could do indefinite integrals. But other than that, this app is really good!

Listen, this app is hands down one of the best on the play store. I think the only thing holding this app back from getting 5 stars from me (as I have an AMOLED display) is the option to have a pitch black option for the dark theme. Some of us like the power savings, others just like the look of it, but if it had that I think this app would be perfect. Kudos to the devs and all their hard work, cheers! ????

I've tried over 15 calculator apps, yet this one completely outclasses them all. Stop looking for other calculator apps, this is the best one in the whole app store. You won't find another as extensive (University level), easy to use, AD FREE and good looking (and the interface is fluent). This app has no faults, seriously.

Everytime I tap in the input space, the keyboard pops up. That's a bit annoying. I would like that it doesn't pop up on its own but rather from a dedicated key. Other than this little inconvenience, your app is a lovely creation.

This app is balls to the wall. I've paid for lesser apps. I do have a couple of questions. Can you make it do long division but write it out in long form and provide a result with a remainder? Can it do multiplication the same way, writing out each step long hand? If you can configure this thing to do that would be awesome. I have a couple calculator apps that do this now but they are literally trash.

Nearest thing to perfection ! Just one problem though, there is no way to refresh the 3d graph window, other than leaving the page after saving the equation, and then coming back. Also, can you add an option to perform base n calculations, with floating point numbers, if possible. Please see if this can be managed. Rest, great job guys ! Love your app. A BIG Thumbs Up !

A good free calculator with no adverts. The UI is nice and it supports hex and binary. It's load time is slightly long and I agree with other reviewers that the splash screen is a little annoying.

Even with its rough edges, this app already provides so much! I'm really looking forward to see it develop more if it does, and will surely use it often as it is now.

You know that iOS bug where pressing digits too fast won't register? Here, if I press Clear in scientific calculator, you can't enter digits until the animation completes.

Disappointed by the Unit Converter. How can 500 Mb/s be equal with 500 Gb/s or even 500 Tb/s? Please fix this problem and I will revise my rating. I am impressed with the look and feel though.

Best calculator, hands down. Most recent update prevents several functions from working in Scientific Calculator mode, such as LCM and GCD. Also, there are many operations you can't perform in that mode as well. It'd be great to have an "open keyboard" button on the scientific calculator.

Simple, easy to use and pleasing to look at UI. Yet it has pretty much every mathematical function you will need including Combinations and Permutations which for the life of me I don't understand why more calculator apps don't have. Best of both worlds. Highly recommended.

Great app. There's a small bug that when you choose a mode, it sometimes opens not the one you pressed, fortunately if you first go to the first or the last on the list it works correctly.

Very good overall, but seems I cannot input negative ordinates for 2D lines (vectors yes, lines no). Am I missing something?

I would go for a five star rating but your calculator cannot perform limitless integration. Please fix otherwise a great calculator also add large units in unit conversion, your calculators 3d graph is glitchy doesnot updates the graph as soon as new equation is entered fix it, Regards

Nice UI and lots of features, but bug results in loss of precision. Enter 0.000001 and keep squaring it. Eventually it just shows the result as 0.0. Still giving five stars in anticipation of bug being fixed.

Now if you could just install this into my brain I might have a Fighting Chance! Keep up the good work!

It's amazing that on iOS you can even get a simple calculator app without ads and annoying pop-ups. This is the ultimate package, and it's free. Thank you!

amazing, so much options for free. it looks very nice on my tablet [ samsung tab s3 ] and my phone [ note 8 ]. add in the next version an Amoled theme, (so I could use my device as a calculator for a long time without draining the battery and display life. I ussually rate only apps if they are outstanding and this is one for sure????

Incredibly multi-functional calculator. Unless it's something ultra-complex like Laplace Transforms, you should find it here.

The app really improved since the last time I used it. Before it was more function over form, but now it's beautiful as well. Great job!

Great calculator... it's hard to get used to e and i being represented in uppercase (E and I).

Graphing functions is amazing - you can trace the function and get dy/dx just by following the graph with your finger. It can graph in three dimensions. It integrates functions, finds multiple derivatives, converts units, and several more functions. Very easy to navigate, and then highlights which buttons you need to use to enter your functions. I highly, highly recommend this - I'll be using it to teach my son how mathematical functions are graphed.

It's a nice app. I love it, but still more work is needed. I got error in calculating inverse of a 5x5 matrix.

Whats the catch It seems too good to be true. I honestly think there should be some ads and what not cause I feel bad not being able to contribute to the creator of this as its so dang useful.

It's almost perfect. The only problem is that the decimal point button doesn't work in landscape orientation.

Definitely worth trying out, contains oh so many features incl. 2D and 3D plotting. Has some UI issues though.

Mod operation doesn't work. After selecting mod then giving 2 operands separated by a comma doesn't show the answer instead shows the same statement.

Derivatives are all wrong and when I try to use constants like Euler's number it gives multiple ways to express it with acknowledgment that the constants shown are different but not really any explanation on why.

Very Good has all the complex functions that one would need to calculate expressions etc. I noticed though that no history is present.I tried to get it on but it doesn't seem to show anything but the last expression, I give 4 stars because there is no history which I need.

downloading this for my exams . thanks to this app i wont fail grade 10 . i will update my review when i get my score . wish me luck developers(p.s my antivirus found something called an "adware" and said it was a threat or somehing idk pls reply)

For the graph function, you should add a (center axes) button and an option to zoom one axis without affecting the zoom of the other one and add a zoom factor please(a numeric value that changes the zoom). I need an option to make the numbers one each axis integers. And i need an option to change the thickness of a function plot. Thx.

I couldn't use the N keyboard in this app inspite of downloading...I can't even type a equation here to solve. There is no function to change the keyboard. Though there was a key but it only tells you to download the keyboard but doesn't let you change it.

I have no worfs how I am satisfied with this app ! OMG it has everything what a regular student needs :) deriviations, graph, systems, everything !!! This program must be in every mobile phone. Thank you !