Ncalc - Graphing Calculator 84
Tran Duy Education iPhoneiPadiPod touchMac
Ncalc - Graphing Calculator 84 is a free Education app for iPhone and iPad by Tran Duy. Rated 4.6/5 from 5,019 ratings. Requires iOS 15.
- Rating
- 4.6
- 5K ratings
- Price
- Free
- on the App Store
- Size
- 168 MB
- Age 12+
- Updated
- Jun 25
- 2026 · v3.0.2
Screenshots
About Ncalc - Graphing Calculator 84
The graphing calculator provides a UI similar to a real 84 graphing calculator. ◉ Graphing Calculator - Supports function, polar, and parametric graphs. - Press MODE and select Graph mode, then press Y= to open the graph editor. Press GRAPH to draw the functions. - Interactive and manual tracing modes. - Shows intersections, roots, and extrema (local maxima and minima) of function graphs. - Shows derivatives of function graphs. - Shows tangents to function and polar graphs. - Best‑fit line for a set of points. - TABLE generates a table of values for the selected graph. - CALC computes min, max, d/dx, and integrals of the selected graph. ◉ Scientific Calculator - Includes a computer algebra system for symbolic calculation. - Supports all functions of real 83 and 84 graphing calculators. - All basic and advanced math functions: complex numbers, probability, angles, relational operations, logic operations, and matrix and vector operations. - Users can define custom calculator functions. ◉ Equation Solver (press ALPHA ENTER to open the SOLVER menu) - Solves any equation with Auto Solver mode and can provide symbolic roots. - Solves quadratic, cubic, quartic, and quintic equations. - Solves systems of equations with 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, Z‑Interval, T‑Interval, 2‑SampZInt, 2‑SampTInt, 1‑PropZInt, 2‑PropZInt, Chi‑square Test, Chi‑square GOF Test, 2‑SampFTest, LinRegTTest, LinRegTInt, ANOVA. - All distribution functions, including Normal, Student’s t, Chi‑square, F, binomial, and more. ◉ Get Calculator 84 Premium Upgrade to the Premium version to access all the features above, including advanced math functions, statistics, inferential statistics and distributions, and more. 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 purchase and at the start of each renewal term. You can cancel at any time through your iTunes account settings. You must do this at least 24 hours before the end of the current period to avoid being charged. Cancellation takes effect the day after the current period ends, 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
Ratings & reviews
4.6
5K ratings
What’s new
Version 3.0.2 · Updated June 25, 2026
Thanks for using Calc84! In this update, we are excited to introduce Math OCR, a new feature that allows you to input mathematical expressions using your device's camera or photos. Simply snap a picture of a handwritten or printed equation, and Calc84 will recognize and convert it into editable text for you to work with. We hope you find Math OCR helpful and look forward to your feedback!
App privacy
The developer, Tran Duy, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: Device ID
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Location: Precise Location, Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
- Diagnostics: Performance Data, Crash Data, Other Diagnostic Data
Used for: Third-Party Advertising, Developer’s Advertising or Marketing, Analytics
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| App | Rating | Price | Last updated |
|---|---|---|---|
| Ncalc - Graphing Calculator 84 | 4.6 / 5 (5,019 ratings) | Free | June 25, 2026 |
| Taculator 84 Graphing Calc | 4.5 / 5 (7,589) | Free | Sep 11, 2026 |
| Graphing Calculator X84 | 4.5 / 5 (50,019) | Free | Feb 26, 2026 |
| Calculate84 | 4.8 / 5 (53,508) | Free | Aug 31, 2026 |
| Calculate84 Plus | 4.5 / 5 (305) | Free | Nov 8, 2023 |
| Desmos Graphing Calculator | 4.3 / 5 (1,285) | Free | Aug 25, 2026 |
| NumWorks Graphing Calculator | 4.4 / 5 (98) | Free | Jul 30, 2026 |