Calculator Plus - All-in-One
Hieu Dao Utilities iPhoneiPadiPod touch
Calculator Plus - All-in-One is a free Utilities app for iPhone and iPad by Hieu Dao. Requires iOS 15.0. Updated August 15, 2026.
- Price
- Free
- on the App Store
- Size
- 35 MB
- Age 4+
- Updated
- Aug 15
- 2026 · v2.1.0
Screenshots
About Calculator Plus - All-in-One
Every tool unlocked. No paywall on any calculator. Solve equations step by step, work with matrices, take derivatives and integrals, and look up any of 118 elements - all offline, all free. WHAT MAKES IT DIFFERENT Step-by-step solutions See how the answer was reached, not just the result. Linear, quadratic and cubic equations, plus 2-variable systems. Formula library - 33 formulas Physics, chemistry and math. Fill in the values you know and the app solves for whichever one is missing. Newton's second law, Ohm's law, molarity, dilution, law of cosines, compound interest and more. Periodic table - 118 elements Atomic mass, electron configuration, electronegativity, period and group. Grid view or list view, with search. Matrices up to 6x6 Determinant, inverse, transpose, rank, and solving linear systems. Calculus Symbolic derivatives and definite integrals, with a graph view. Programmer mode Binary, octal, decimal and hex. Bitwise operations, 8 to 64 bit widths. Complex numbers and vectors Polar form, nth roots, dot and cross products, angle between vectors. Statistics and graphing Mean, median, mode, standard deviation, variance. Plot multiple functions at once. EVERYDAY TOOLS Currency and crypto conversion with live rates. Loan and savings interest with a full amortization schedule. Tax, tip, discount, BMI, GPA, fuel cost, unit price comparison, electricity bill. Length, area, speed, temperature and clothing size conversion. Fractions, percentages, date difference, geometry, bubble level. BUILT TO BE PLEASANT - Works fully offline, except live exchange rates - 11 languages - Calculation history with timestamps, tap any entry to reuse it - Tap anywhere in the expression to edit that exact digit - Landscape mode on the main calculator - Search box and favorites in the tool drawer Premium removes ads and unlocks extra color themes. Everything else is free, permanently. Privacy Policy: https://docs.google.com/document/d/14VwVQjYjk5p4P5gF3xpzjBEqdZWupXMi19D-FuSFS34/edit?usp=sharing Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
What’s new
Version 2.1.0 · Updated August 15, 2026
NEW - Formula library 33 formulas across physics, chemistry and math. Fill in what you know and the app solves for the missing value. Includes Newton's second law, Ohm's law, molarity, dilution, law of cosines and compound interest. NEW - Periodic table All 118 elements with atomic mass, electron configuration and electronegativity. Grid or list view, with search. NEW - Everything unlocked Matrices, calculus, complex numbers, vectors, currency conversion, interest and tax calculators are now free for everyone. Premium is only about removing ads and extra themes. NEW - Find tools faster Search box in the tool drawer, and you can now star the tools you use most. Formulas and the periodic table are also one tap away from the main calculator. IMPROVED - Calculation history now shows the date and time of each entry - Landscape layout on the main calculator has been rebuilt - Currency, interest and unit converters remember your last selection - Tap directly on a digit in the expression to edit it FIXED - nCr and nPr returned the wrong value - The percent key behaved as a remainder operator - Pressing an operator then equals could return 0 - sin(180 degrees) showed a tiny number instead of 0 - Several formula results could not be solved in reverse
App privacy
The developer, Hieu Dao, 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
- Usage Data: Advertising Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Usage Data: Advertising Data
- Diagnostics: Crash Data, Performance Data
- Purchases: Purchase History
Used for: Third-Party Advertising, Analytics, App Functionality
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|---|---|---|---|---|
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