# Notebook Calculator — Write, Edit, Save & Graphing > A scientific and graphing calculator with a notebook interface for editing and saving calculations. (iPhone/iPad app by 俊 姜.) - Source: https://appshunter.io/ios/app/notebook-calculator/id1169182532 (this page in markdown: same URL + `.md`) - Developer: [俊 姜](https://appshunter.io/developer/974809005) - Category: Utilities - Price: $1.99 (on sale, was $2.99) - Age rating: +4 - Requires: iOS 15.6 · 4 MB - Languages: American English - Released: 2016-12-05 - Data updated: 2026-09-04 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/notebook-calculator/id1169182532/reviews.md ## What is Notebook Calculator? DOING LONG CALCULATIONS IN NOTEBOOK ! GO BACK & CHANGE ERRORS EASILY ! JUST LIKE TYPE IN A TEXT FIELD ! COPY + CUT + PASTE EDIT & SAVE CALCULATION HISTORY ! SCIENTIFIC & GRAPHIC CALCULATOR ! • It Supports the File Management ! - Create a file - Save - Open - Delete • Mathematical Functions: SIN(X) : sine of x COS(X) : cosine of x TAN(X) : tangent of x COT(X) : cotangent of x ASIN(X) : arcsine of x ACOS(X) : arccosine of x ATAN(X) : arctangent of x SINH(X) : hyperbolic sine COSH(X) : hyperbolic cosine TANH(X) : hyperbolic tangent ASINH(X) : inverse hyperbolic sine ACOSH(X) : inverse hyperbolic cosine ATANH(X) : inverse hyperbolic tangent SQRT(X) : square root of x ABS(X) : absolute value of x FCT(X) : x factorial LOG(X,Y) : logarithm of y to base x LN(X) : natural logarithm of x LOG(X) : base-10 logarithm of x LOG10(X) : base-10 logarithm of x LOG2(X) : base-2 logarithm of x EXP(X) : base-e exponential of x ERF(X) : the error function of x ERFC(X) : the complementary error function of x ROUND(X) : integral nearest to x CEIL(X) : the smallest integral that is not less than x FLOOR(X) : the largest integral that is not greater than x TGAMMA(X) : the gamma function of x LGAMMA(X) : the natural logarithm of the absolute value of the gamma function of x X^Y : y-th power of x • Statistical functions: SUM(a1,a2,a3,a4) : a1+a2+a3+a4 AVERAGE(a1,a2,a3,a4) : (a1+a2+a3+a4)÷4 VARIANCE(a1,a2,a3,a4) : variance SD(...) : standard deviation SUMSQ(...) : sum of squares AD(...) : absolute deviation CV(...) : coefficient of variation SVARIANCE(...) : sample variance SSD(...) : sample standard deviation SCV(...) : sample coefficient of variance • Help Manual: “//” means a line comment or annotation. A=2 B=3 C=A+B Click “Run”, the screen shows: C=5 If the line C=A+B is annotated , A=2 B=3 //C=A+B Click “Run”, the screen shows: B=3 - Variable Naming Rules: Start with letters, and not involving keywords. A, A1, B25, HAT (right) PRINT1, COS (wrong) - The Usage of PRINT: A=10+5 B=10/5 PRITN A,B Click “Run”, the screen shows: A=15 B=2 Default variable name is RESULT , e.g. 16+5*6 Click “Run”, the screen shows: RESULT=46 - Combination & Arrangement: C(n,k) = n!/(k!(n-k)!) A(n,k) = n!/(n-k)! - Complex Number When there is “i” or “∠” on the screen, it automatically enters Complex Number Calculation Mode. e.g. X=3+4i or X=5∠53.1° 9 functions are available for the Mode. SIN(X), COS(X), TAN(X) COT(X), SINH(X), COSH(X) SQRT(X), ABS(X), CONJUGATE(X) - Integral INTEGRAL X²,2,4 Default precision is 300 times of calculations. It can be more accurate, e.g. 500 times. INTEGRAL X²,2,4,500 - Graphics PLOT SIN(X) PLOT X² Default length = 10, width = 10. Specify the lenght = 20, width = 5. Then we have, PLOT X²,20,5 Default dense is 150 points. It also can be customized, e.g. 200 points. PLOT X²,20,5,200 ## Key features - Notebook interface for calculations - Edit, save, and graph history - Scientific and graphic calculator functions - Complex number calculations - Extensive mathematical functions - Statistical functions - File management for calculations ## Chart rankings - #191 in Top Paid · Utilities (US App Store) ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/notebook-calculator/id1169182532/reviews.md ### 4/5 — Great Start *2017-10-19* I like the functionality of the large screen and the script form. Would like to see: 1. Engineering notation 2. Subscript text for naming variables ## Frequently asked questions about Notebook Calculator ### What is Notebook Calculator? Notebook Calculator is a paid utility app that combines a scientific and graphing calculator with a notebook interface. It allows users to write, edit, save, and graph their calculations, supporting a wide array of mathematical and statistical functions. ### What kind of calculations can Notebook Calculator perform? Notebook Calculator supports a vast range of mathematical functions, including trigonometric, hyperbolic, logarithmic, and exponential functions. It also handles statistical calculations like sum, average, variance, and standard deviation, as well as complex number calculations. ### Can I edit past calculations in Notebook Calculator? Yes, a key feature of Notebook Calculator is its notebook interface, which allows you to go back and easily edit previous calculations. You can copy, cut, and paste parts of your calculations, making error correction and modifications straightforward. ### Does Notebook Calculator support graphing? Yes, Notebook Calculator includes graphing capabilities, allowing you to visualize mathematical functions. This feature is integrated with its scientific and complex number calculation modes. ### What devices is Notebook Calculator compatible with? Notebook Calculator is available for iPhone, iPad, and iPod touch devices, running on iOS. It was last updated on June 30, 2025, with version 1.4. ### How much does Notebook Calculator cost? Notebook Calculator is a paid application, priced at $1.99. It does not feature in-app purchases or advertisements. ### Does Notebook Calculator have ads? No, Notebook Calculator is ad-free. As a paid application, it provides an uninterrupted user experience without any advertisements. ### What is the age rating for Notebook Calculator? Notebook Calculator has an age rating of 4+, making it suitable for a wide range of users, including children and adults. ## Version history (last 4 releases) ### 1.4 — 2025-06-30 Built with iOS SDK 18. ### 1.2 — 2022-03-10 Compatible with more iOS devices. ### 1.1 — 2018-05-27 This app has been updated by Apple to display the Apple Watch app icon. • iOS 11 SDK Compatibility (iPhone X) • Fixed Computation Bugs ### 1.0 — 2016-12-05 No release notes. ## Apps similar to Notebook Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Calx: Stack calculator](https://appshunter.io/ios/app/calx-stack-calculator/id928929230) | 5.0 (2) | $0.99 | Utilities | | [Family Calendar](https://appshunter.io/ios/app/family-calendar/id1085014036) | — | $2.99 | Utilities | | [Concrete Calculator Elite](https://appshunter.io/ios/app/concrete-calculator-elite/id717083811) | 4.9 (125) | $6.99 | Utilities | | [Standby Uhr Wecker Nachttisch](https://appshunter.io/ios/app/standby-uhr-wecker-nachttisch/id1267263347) | 4.5 (116) | $1.99 | Utilities | | [Petromoc Card](https://appshunter.io/ios/app/petromoc-card/id6466183526) | — | Free | Utilities | | [avita Random Number Generator](https://appshunter.io/ios/app/avita-random-number-generator/id6472271579) | — | Free | Utilities | ## More apps by 俊 姜 - [Telegraph - Morse Code !](https://appshunter.io/ios/app/telegraph-morse-code/id985978176) - [Dancing Butterfly](https://appshunter.io/ios/app/dancing-butterfly/id988280926) - [I Ching - Smart Chinese Wisdom](https://appshunter.io/ios/app/i-ching-smart-chinese-wisdom/id989785470) - [Quran Plus - Islamic Calendar](https://appshunter.io/ios/app/quran-plus-islamic-calendar/id989829373) - [Buddha - Magic Prayer Wheel !](https://appshunter.io/ios/app/buddha-magic-prayer-wheel/id1011711750) - [3D Astronomy : Celestial Globe](https://appshunter.io/ios/app/3d-astronomy-celestial-globe/id1011717212) All apps by 俊 姜: https://appshunter.io/developer/974809005 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*