Ncalc - Graphing Calculator 84 12+
Designed for use with Calc84
Tran Duy
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- Free
- Offers In-App Purchases
Screenshots
Description
Graphing calculator provides an UI similar to real graphing calculator 84.
◉ Graphing calculator.
- Calculator supports function, polar and parametric graphs.
- Press MODE and select graph mode, and then press Y= to open graph editor. Press GRAPH to draw these functions.
- Interactive tracing mode, manual tracing mode.
- Show intersection, root and extrema (local maximum, local minimum) of function graph
- Show derivative of function graph
- Show tangent of function and polar graphs
- Best fit line of set of points.
- TABLE generates table of value of selected graph.
- CALC calculates min, max, d/dx, integral of selected graph.
◉ Scientific calculator
- Computer algebra system, symbolic calculation.
- Support all functions of real graphing calculator 83, 84.
- All basic and advanced math functions, complex number, probability, angle, relational operations, logic operations, matrix and vector operations.
- Users can define their calculator function.
◉ Equation solver (Press ALPHA ENTER to open SOLVER menu)
- Solve any equation with auto solver mode, the calculator can give symbolic roots.
- Solve quadratic, cubic, quartic and 5th equation.
- Solve system of equations, up to 5 variables
◉ Statistics
- 1-Var Stats Calculates 1-variable statistics.
- 2-Var Stats Calculates 2-variable statistics.
- LinReg(ax+b) Fits a linear model to data.
- QuadReg Fits a quadratic model to data.
- CubicReg Fits a cubic model to data.
- QuartReg Fits a quartic model to data.
- LinReg(a+bx) Fits a linear model to data.
- LnReg Fits a logarithmic model to data.
- ExpReg Fits an exponential model to data.
◉ Inferential Statistics and Distributions
- Z-Test, T-Test, 2-SampZTest, 2-SampTTest, 1-PropZTest, 2-PropZTest, ZInterval, TInterval, 2-SampZInt, 2-SampTInt, 1-PropZInt, 2-PropZInt, Chi2-Test, Chi2-GOF Test, 2-SampFTest, LinRegTTest, LinRegTInt, ANOVA
- All distribution functions, includes normal distribution, student t, Chi-square, F, binomial, ...
◉ Get Calculator 84 Premium
Upgrade to Premium version and get access all app features above, includes advanced math functions,
statistic, inferential statistics and distributions and a lot of other features.
* Choose from 3 subscription options:
- A 1-month subscription
- A 1-year subscription
- A Lifetime purchase.
* Subscription payments will be charged to your iTunes account at confirmation of your purchase and upon commencement of each renewal term.
* You can cancel the subscription anytime by canceling your subscription through your iTunes account settings. This must be done 24 hours before the end of subscription period to avoid being charged. The cancellation will take effect the day after the last day of the current subscription period, and you will be downgraded to the free service.
Terms of Service: https://calc84-efd3d.firebaseapp.com/tos.html
Privacy Policy: https://calc84-efd3d.firebaseapp.com/privacypolicy.html
What’s New
Version 2.2.0
- Graphing: allow to x=value graph
- Graphing: derivative of Erf and Erfc
- StatPlot: Modified box plot option
- Graphing: graph of limit and numeric derivative
- Improved equation solver
- Improved TVM solver
- Support more hardware keyboard layouts
- Bug fixes and performance improved
Ratings and Reviews
This is great 🤩
Out of what I know it lets me do almost everything on a normal expensive graphing calculator, but for free. Some things are locked unless I think until u buy the premium. But barely anything is locked. There are all of the buttons on a normal graphing calculator. You can click the same buttons to get the same outcome like a normal calculator. This makes it very less complicated than other calculator apps. Although, during some tests I am not allowed to use a phone which makes sense. I can only use a real calculator. That’s the one thing that I cannot use it for.
Annoying pop ups requesting reviews, no help/instructions and operations changes between ti84
Overall this calculator works pretty well. However are no instructions on how to use it, so if you're familiar with a TI84 for instance, you can figure it out but its not identicial in operation. There is a 'help' section but if you click it, it says there is nothing there. Also the app continues to do a pop up asking for a 5 star review, so I'm leaving a 2 star as a result. I paid money for this app, I'm not going to be bugged about reviews after paying money. One minor issue is the alpha button's color does not match the alpha button key options above the keys. This is usually matching. My overall review is yes this app works, it'll get the job done, but if you want a computer version of the TI84, look elsewhere as some of the commands within this are complicated and there is no guidance.
Calculator unable to handle equation 14!/(3!11!). Gives the error message "error: syntax error" . Whereas my portable regular TI84 calculator can handle the problem without issue.
Beware serious bugs
I have been generally impressed with the capability of this calculator, and it is my "go to" calculator for vector operations.
However, it has some serious and unexpected bugs. Some polar-rectangular conversions have unexplainable errors using particular angle values, and some list functions provide grossly wrong answers (wrong sign, wrong magnitude).
Update: The author responded with a work-around for the polar conversion issue. The multiplication of lists still gives unexpected results
Developer Response ,
Hi,
I fixed it in the latest update.
App Privacy
The developer, Tran Duy, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Information
- Seller
- Tran Duy
- Size
- 61.2 MB
- Category
- Education
- Compatibility
-
- iPhone
- Requires iOS 13.0 or later.
- iPad
- Requires iPadOS 13.0 or later.
- iPod touch
- Requires iOS 13.0 or later.
- Mac
- Requires macOS 10.15 or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
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English, Albanian, Arabic, Armenian, Bengali, Croatian, Czech, Dutch, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Lithuanian, Persian, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
- 12+ Infrequent/Mild Realistic Violence Infrequent/Mild Mature/Suggestive Themes Infrequent/Mild Cartoon or Fantasy Violence
- Copyright
- © 2023 Duy Tran
- Price
- Free
- In-App Purchases
-
- Calc84 One Month $1.99
- Graphing Calculator Plus $5.99
- Calc84 One Year $2.99
- Calc84 Pro Lifetime $5.99
Supports
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Family Sharing
Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.