Scientific Calculator Plus 991
EducationTran Duy
NCalc — Powerful Scientific Calculator, Graphing, and Converter NCalc combines a natural-display scientific calculator, advanced math tools, a full graphing module (as 83/84 calculator), a large formula library, and a comprehensive unit and currency converter—designed for students, engineers, and anyone who loves math. ◉ Main Calculator Features - Natural display: Enter expressions exactly as in textbooks—fractions, roots, exponents, and more—see results as written on paper. - Keyboard layout: Matches popular models for familiarity and speed: 115 ES Plus, 991 ES Plus, 300 ES Plus, and 991 EX. - Symbolic and numeric modes: Perform exact fraction calculation or evaluate numerically when needed. - Arbitrary precision integers: Work with very large integers without losing accuracy. - Output types: Choose from fraction, mixed fraction, decimal, repeating decimal, degrees/minutes/seconds, and polar coordinates. - Angle units: Degree, radian, and gradian (grade). - Decimal formatter: Display numbers in normal, engineering, engineering SI, scientific, or fixed formats. - Calculation history: Review and reuse past calculations with ease. - Copy and paste support for fast data entry and sharing. ◉ Algebra, Calculus, and Core Math - Algebra calculation: Expansion, factorization, simplification, and more. - Calculus calculator: Derivatives, integrals, and limits of expressions. - Complex number calculation: Arithmetic, polar/rectangular conversion, exponential, logarithm, powers, roots, and full trigonometric functions. ◉ Equations and Inequalities - Equation solver: Solve general equations, plus dedicated solvers for quadratic, cubic, and quartic equations. - System of equations solver: Solve systems with 2, 3, or 4 variables. - Inequality solvers: Quadratic, cubic, and quartic inequalities with interval-based solutions. ◉ Matrices and Vectors - Operations: Addition, subtraction, multiplication for matrices and vectors. - Advanced tools: Determinant, inverse, transpose, rank, eigenvalues, and eigenvectors. ◉ Statistics and Distributions - Statistical calculation: Descriptive stats and regression calculation (including a regression plotter). - Distribution calculation: Normal distribution, binomial distribution, Poisson distribution, t-distribution, chi-square distribution, and F-distribution. ◉ Number Bases and Formats - Base N calculation: Effortlessly switch between binary, octal, decimal, and hexadecimal, with arithmetic in each base. ◉ Tables, Variables, and Custom Functions - Table Generator: Generate value tables based on any expression and range. - Calculator variables: Store values and reuse them across calculations. - User-defined functions: Create your own functions to streamline repetitive work. - Built-in constants: A rich set of mathematical and physical constants. ◉ Formulas - Extensive formula collection: Math and Physics formulas, clearly categorized—ideal for secondary school, high school, and university students. ◉ Unit Converter - Currency Converter - 1000+ unit conversions ◉ Graphing as 83, 84 calculator - Cartesian functions, implicit plots, polar, and parametric. - Tracing, roots, intersections, extrema, derivative, and integral evaluations on graphs. ◉ Auto-renewing subscription You may purchase an auto-renewing subscription through an In-App Purchase. • Auto-renewable subscription • 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. • 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 • Privacy policy and terms of use: https://ncalc-app.web.app/terms-of-services.html
Quick answer
Scientific Calculator Plus 991 is currently cheapest in Nigeria
Scientific Calculator Plus 991 has comparable prices in 54 countries and regions. The current lowest price is about $1.10, while the highest is about $3.18 (Hungary). Choosing the cheapest region can save up to 65%. Prices update every two days and exchange rates update daily.
Next step: subscribe with a matching regional gift card
For Nigeria, prepare an Apple gift card for that region first
The current lowest price is about $1.10, with potential savings up to 65%. Before buying, make sure your Apple ID region, gift card region, and subscription region match.
Before you buy
- Your Apple ID region must match the gift card region.
- Confirm the app is available in that region before subscribing.
- Prices and taxes may change by regional policy.
- Common failures: region mismatch, low balance, or account risk checks.
Subscription Plans
Global Price Comparison(Calculator month subscription)
| # | Region | Original↕ | USD↑ | Tag |
|---|---|---|---|---|
| 1 | 🇳🇬NigeriaApp Store | NGN 1,500 | $1.10 | Lowest |
| 2 | 🇹🇷TurkeyApp Store | TRY 59.99 | $1.27 | -60% |
| 3 | 🇪🇬EgyptApp Store | EGP 69.99 | $1.37 | -57% |
| 4 | 🇮🇩IndonesiaApp Store | IDR 29,000 | $1.61 | -49% |
| 5 | 🇵🇭PhilippinesApp Store | PHP 99 | $1.61 | -49% |
| 6 | 🇵🇰PakistanApp Store | PKR 500 | $1.80 | -43% |
| 7 | 🇹🇼TaiwanApp Store | TWD 60 | $1.85 | -42% |
| 8 | 🇻🇳VietnamApp Store | VND 49,000 | $1.86 | -41% |
| 9 | 🇯🇵JapanApp Store | JPY 300 | $1.88 | -41% |
| 10 | 🇧🇷BrazilApp Store | BRL 9.9 | $1.95 | -39% |
| 11 | 🇺🇸United StatesApp Store | USD 1.99 | $1.99 | -37% |
| 12 | 🇦🇷ArgentinaApp Store | USD 1.99 | $1.99 | -37% |
| 13 | 🇧🇴BoliviaApp Store | USD 1.99 | $1.99 | -37% |
| 14 | 🇺🇦UkraineApp Store | USD 1.99 | $1.99 | -37% |
| 15 | 🌐App Store | KZT 999 | $2.05 | -35% |
| 16 | 🇮🇳IndiaApp Store | INR 199 | $2.09 | -34% |
| 17 | 🇦🇺AustraliaApp Store | AUD 2.99 | $2.10 | -34% |
| 18 | 🇨🇦CanadaApp Store | CAD 2.99 | $2.14 | -33% |
| 19 | 🇨🇱ChileApp Store | CLP 1,990 | $2.15 | -32% |
| 20 | 🇦🇪United Arab EmiratesApp Store | AED 7.99 | $2.18 | -31% |
| 21 | 🇨🇳ChinaApp Store | CNY 15 | $2.22 | -30% |
| 22 | 🇲🇽MexicoApp Store | MXN 39 | $2.25 | -29% |
| 23 | 🇷🇴RomaniaApp Store | LEI 9.99 | $2.26 | -29% |
| 24 | 🇮🇹ItalyApp Store | EUR 1.99 | $2.29 | -28% |
| 25 | 🇵🇹PortugalApp Store | EUR 1.99 | $2.29 | -28% |
| 26 | 🇪🇸SpainApp Store | EUR 1.99 | $2.29 | -28% |
| 27 | 🇫🇮FinlandApp Store | EUR 1.99 | $2.29 | -28% |
| 28 | 🇫🇷FranceApp Store | EUR 1.99 | $2.29 | -28% |
| 29 | 🇩🇪GermanyApp Store | EUR 1.99 | $2.29 | -28% |
| 30 | 🇬🇷GreeceApp Store | EUR 1.99 | $2.29 | -28% |
| 31 | 🇮🇪IrelandApp Store | EUR 1.99 | $2.29 | -28% |
| 32 | 🇦🇹AustriaApp Store | EUR 1.99 | $2.29 | -28% |
| 33 | 🇳🇱NetherlandsApp Store | EUR 1.99 | $2.29 | -28% |
| 34 | 🇧🇪BelgiumApp Store | EUR 1.99 | $2.29 | -28% |
| 35 | 🇭🇰Hong KongApp Store | HKD 18 | $2.30 | -28% |
| 36 | 🇰🇷South KoreaApp Store | KRW 3,300 | $2.32 | -27% |
| 37 | 🇸🇬SingaporeApp Store | SGD 2.98 | $2.32 | -27% |
| 38 | 🇵🇪PeruApp Store | PEN 7.9 | $2.33 | -27% |
| 39 | 🇨🇿Czech RepublicApp Store | CZK 49 | $2.33 | -27% |
| 40 | 🇳🇿New ZealandApp Store | NZD 3.99 | $2.34 | -26% |
| 41 | 🇹🇭ThailandApp Store | THB 79 | $2.37 | -25% |
| 42 | 🇲🇾MalaysiaApp Store | MYR 9.9 | $2.42 | -24% |
| 43 | 🇿🇦South AfricaApp Store | ZAR 39.99 | $2.43 | -24% |
| 44 | 🇨🇭SwitzerlandApp Store | CHF 2 | $2.48 | -22% |
| 45 | 🇷🇺RussiaApp Store | RUB 199 | $2.50 | -21% |
| 46 | 🇮🇱IsraelApp Store | ILS 7.9 | $2.58 | -19% |
| 47 | 🇵🇱PolandApp Store | PLN 9.99 | $2.67 | -16% |
| 48 | 🇸🇦Saudi ArabiaApp Store | SAR 9.99 | $2.68 | -16% |
| 49 | 🇬🇧United KingdomApp Store | GBP 1.99 | $2.68 | -16% |
| 50 | 🇩🇰DenmarkApp Store | DKK 19 | $2.93 | -8% |
| 51 | 🇸🇪SwedenApp Store | SEK 29 | $3.04 | -4% |
| 52 | 🇳🇴NorwayApp Store | NOK 29 | $3.04 | -4% |
| 53 | 🇨🇴ColombiaApp Store | COP 9,900 | $3.13 | -1% |
| 54 | 🇭🇺HungaryApp Store | HUF 999 | $3.18 | Highest |
App Store Price History(Calculator month subscription)
Free users can view 7 days of history. Upgrade to Pro for 365 days.
Scientific Calculator Plus 991 Price Summary
Scientific Calculator Plus 991 offers subscriptions in 54 countries and regions worldwide. The lowest price is $1.10 USD (NG), while the highest is $3.18 USD (HU). By subscribing from the cheapest region, you can save up to 65%.
