{"game_intel_data":{},"featured_reviews":[{"content":"Edit: ⭐️ I’m downgrading to 1 star. Even after giving a 5-star review under duress, I continue to receive pop up notices asking for a 5-star review. \n\nEdit: ⭐️⭐️⭐️ I have given this 5 stars only because it is incredibly obnoxious to have to have to click away the pop up asking for a 5-star review (see below) every other time I open the app. I paid for premium so I wouldn’t have to deal with distractions from using the calculator when I need it. The calculator itself is excellent. It’s too bad the developers marketing strategy isn’t. Original review: Overall NCalc is a very good calculator app, especially if you are used to Casio’s scientific calculator layout. I’m giving it 4 stars rather than 5 for two reasons. First, the layout of the arrow buttons doesn’t match the Casio, and irrespective of that, it’s just not very intuitive. The up and down buttons are side-by-side instead of stacked, so I really have to pay extra attention when using them. It’s a little thing, but it’s distracting and a bit irritating. Second is the fact that even with the paid version, half the time I open the app it’s to a pop up asking for a 5-star rating, which I have to close before I can use the calculator. It’s almost as obnoxious as the ads were in the free version. I understand why the developers want (good) ratings, but they should be incentivizing users to willingly rate rather than punishing us for not rating.","version":"1.7.2","date":"2021-06-15T00:00:00Z","rating":5,"app_id":1449106995,"username":"ajpollin","title":"Overall very good calculator app","country":"US","tags":["advertisements","pricing","monetization"],"review_id":7469132037},{"content":"Just buy it if you're in a field like math or engineering and you need a solid calculator.\n\nHere's what I like:\n(1)  It handles symbolic manipulations very well\n(2)  Reliable outputs and stable performance\n(3)  Lots of useful mathematical functions\n(4)  Layout and buttons work exactly like a regular calculator, and some people may not like that, but I like the simplicity\n\nHere's what I don't like:\n(1) The icon is incomprehensive.  It's way too busy looking.  I have it on my dock and it's annoying me everyday.\n(2) Cannot use finger to move cursor around.  You can tap on a location, but it's not accurate enough to get you to where you need in the expression.  I want to be able to use the magnifier to move around.  Currently, I have to use either the arrow keys or external keyboard to move around the expression, which is fine since that's how regular calculators work.  But I think it would be more convenient to use the magnifier.  \n(3) For some weird reason, why you start up the app, the edit screen will resume with the last expression you worked out.  That means when you open the app, and you start typing in a new expression, it will add to the last expression rather than start a new expression.  It's really annoying, because I have to exit the previous expression before I can type a new calculation every time I open the app.","version":"1.7.7","date":"2022-08-27T00:00:00Z","rating":5,"app_id":1449106995,"username":"Reviewerxx","title":"A solid scientific calculator","country":"US","tags":["performance_and_bugs","feature_requests","localization"],"review_id":9022495312},{"content":"If you are an engineer, scientist, or STEM student NCalcFx I believe this to be the best calculator in the App Store.  It’s a joy to work with beautiful tools and that is what this app is — especially if you’re ever used Casio scientific calculators. \n\nIt has one flaw I don’t like — the 1/x key should work immediately on the last answer (=single key press) but NCalc takes 3 key presses to do that. maybe it could be fixed in a future version.  Another wish list item would be to improve the cut and paste functionality of the SOLVE function so continue with the answer — currently the cut/paste grabs an entire object which cannot be smashed into parts so you have to resort to typing each numeral of the answer across manually (unless there’s some trick I haven’t found). \n\nThese small quirks only stand out because the overall design is so balanced and clean.  This calculator is a pleasure to use, I was very glad to pay for the pro version in order to support this kind of craftsmanship. Download the free version and see if you like it as much as I do.","version":"1.9.4","date":"2023-11-03T00:00:00Z","rating":5,"app_id":1449106995,"username":"Lunchguy","title":"Beauty of a well designed tool","country":"US","tags":["pricing","monetization"],"review_id":10543875664}],"related_apps":[{"app_id":876942533,"app_view_url":"/ios/us/symbolab/app/symbolab-ai-math-solver-app/876942533/","country":"US","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/38/12/60/38126052-c23c-3fb7-bdfd-4a15c5821d3f/AppIcon-0-0-1x_U007emarketing-0-9-0-85-220.png/150x150bb.jpg","name":"Symbolab - AI Math Solver 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Arbitrary precision integers: Work with very large integers without losing accuracy.<br>- Output types: Choose from fraction, mixed fraction, decimal, repeating decimal, degrees/minutes/seconds, and polar coordinates.<br>- Angle units: Degree, radian, and gradian (grade).<br>- Decimal formatter: Display numbers in normal, engineering, engineering SI, scientific, or fixed formats.<br>- Calculation history: Review and reuse past calculations with ease.<br>- Copy and paste support for fast data entry and sharing.<br><br>◉ Algebra, Calculus, and Core Math<br>- Algebra calculation: Expansion, factorization, simplification, and more.<br>- Calculus calculator: Derivatives, integrals, and limits of expressions.<br>- Complex number calculation: Arithmetic, polar/rectangular conversion, exponential, logarithm, powers, roots, and full trigonometric functions.<br><br>◉ Equations and Inequalities<br>- Equation solver: Solve general equations, plus dedicated solvers for quadratic, cubic, and quartic equations.<br>- System of equations solver: Solve systems with 2, 3, or 4 variables.<br>- Inequality solvers: Quadratic, cubic, and quartic inequalities with interval-based solutions.<br><br>◉ Matrices and Vectors<br>- Operations: Addition, subtraction, multiplication for matrices and vectors.<br>- Advanced tools: Determinant, inverse, transpose, rank, eigenvalues, and eigenvectors.<br><br>◉ Statistics and Distributions<br>- Statistical calculation: Descriptive stats and regression calculation (including a regression plotter).<br>- Distribution calculation: Normal distribution, binomial distribution, Poisson distribution, t-distribution, chi-square distribution, and F-distribution.<br><br>◉ Number Bases and Formats<br>- Base N calculation: Effortlessly switch between binary, octal, decimal, and hexadecimal, with arithmetic in each base.<br><br>◉ Tables, Variables, and Custom Functions<br>- Table Generator: Generate value tables based on any expression and range.<br>- Calculator variables: Store values and reuse them across calculations.<br>- User-defined functions: Create your own functions to streamline repetitive work.<br>- Built-in constants: A rich set of mathematical and physical constants.<br><br>◉ Formulas<br>- Extensive formula collection: Math and Physics formulas, clearly categorized—ideal for secondary school, high school, and university students.<br><br>◉ Unit Converter<br>- Currency Converter<br>- 1000+ unit conversions<br><br>◉ Graphing as 83, 84 calculator<br>- Cartesian functions, implicit plots, polar, and parametric.<br>- Tracing, roots, intersections, extrema, derivative, and integral evaluations on graphs.<br><br>◉ Auto-renewing subscription<br>You may purchase an auto-renewing subscription through an In-App Purchase.<br>• Auto-renewable subscription<br>• Your subscription will be charged to your AppStore account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period.<br>• Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your AppStore Account Settings after purchase<br>• Privacy policy and terms of use: https://ncalc-app.web.app/terms-of-services.html","app_summary":"The app was last updated on 25 June 2026. Released in US on 03 April 2019 and globally on 03 April 2019. 'Scientific Calculator Plus 991' belongs to the 'Education' category maintaining a content rating of '13+'. Last month's estimates were 80k downloads and < $5k revenue. The app is available in Vietnam, Philippines, and Germany and being advertised actively. Sign up / Sign in to learn more about the time spent, session durations, usage & engagement (DAU, WAU, MAU), retention, churn, marketshare, growth trends, and other market statistics.","subtitle":"NCalc & CalcES Calculator 115","promo_text":"Trusted by 80M+ users across all platforms. 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