Best Harold Iwen Apps

202+ iOS apps curated and reviewed

4.5 avg rating
17 free apps
Updated June 2026

Finding the right harold iwen app can be overwhelming with so many options. We've analyzed 202+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Top Picks for Harold Iwen

Ultimate Chemistry Calculator#1

Ultimate Chemistry Calculator by Harold Iwen

Mole Conversion Calculators
Editor's Choice
πŸ“š Education
5.0(4 ratings)
Free
Ultimate Chemistry Calculator screenshot 1
Ultimate Chemistry Calculator screenshot 2
Ultimate Chemistry Calculator screenshot 3
Ultimate Chemistry Calculator screenshot 4
Ultimate Chemistry Calculator screenshot 5
Ultimate Chemistry Calculator screenshot 6

This app offers nine specialized calculators for mole-related conversions, including grams to moles and moles to particles (atoms or molecules). It visually sets up conversion problems, allowing users to input numbers and calculate results. A review section provides a brief overview of mole conversions.

Photomath#2

Photomath by Google LLC

Learn math, step-by-step
Strong Contender
πŸ“š Education
4.8😊(733K ratings)
FreeIn-App Purchases
#41in Education
Photomath screenshot 1
Photomath screenshot 2
Photomath screenshot 3
Photomath screenshot 4
Photomath screenshot 5

Scan any math problem to receive instant, step-by-step explanations and accurate solutions. This app breaks down complex problems into manageable steps, helping users understand the 'how' and 'why' of math. It supports a wide range of math topics, from basic arithmetic to advanced calculus.

What We Love

  • πŸš€ Helpful for homework and understanding concepts
  • πŸ‘ Provides step-by-step solutions and explanations
  • πŸ€– Accurate and reliable for solving equations
  • πŸ’‘ Useful for checking work and learning from mistakes

Room to Improve

  • πŸ’° Paywall for accessing step-by-step explanations
  • πŸ”’ Concerns about using the app to cheat
  • πŸ› Camera focusing issues and inability to solve certain problem types
Basic Calculator+#3

Basic Calculator+ by Best Free Apps

Basic Four Function Calculator
Worth Considering
πŸ”§ Utilities
4.9😊(243K ratings)
FreeAds
Basic Calculator+ screenshot 1
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Perform essential arithmetic operations with a straightforward calculator app. Its large buttons and clear display ensure ease of use, supporting both portrait and landscape orientations.

What We Love

  • πŸ‘ Easy to use
  • πŸ‘ Large, clear buttons
  • πŸ‘ Straightforward, basic functionality
  • πŸ‘ No ads or in-app purchases

Room to Improve

  • πŸ› Inconsistent click volume
  • πŸ› Ads can be intrusive or disruptive
  • πŸ› Missing backspace/delete function

More Harold Iwen apps to explore

4
Calculatorβ‚Š
Calculatorβ‚Š
Calculatorβ‚Š
Basic, Scientific, Plus Calc
Free

This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversion functions. It features an AI-powered math solver that can solve problems from photos and a dedicated math notes section for jotting down equations and diagrams. Accessibility options like dynamic text size and VoiceOver support are also included.

Basic and scientific calculationsUnit and currency converterAI-powered math solver with photo recognition
πŸ”§ Utilities
(1.7M)
free with in-app purchases
5
Desmos Scientific Calculator
Desmos Scientific Calculator
Desmos Scientific Calculator
by Desmos, Inc.
Free

This app offers a powerful scientific calculator with a wide range of functions for trigonometry, statistics, and combinatorics. Users can define and evaluate their own functions, assign values to variables, and view multiple expressions simultaneously. It works offline and is completely free to use.

Basic arithmetic operationsTrigonometric functionsStatistical calculations
πŸ“š Education
(327)
free
6
MathMaster: Math Solver & Help
MathMaster: Math Solver & Help
MathMaster: Math Solver & Help
Homework Helper & AI Tutor
Free

Solve math problems instantly by taking a photo or entering an equation. Get step-by-step solutions to understand the process and improve your math skills. Covers a wide range of topics from basic arithmetic to calculus.

Camera-based problem solvingStep-by-step solutionsHandwritten and printed math recognition
πŸ“š Education
(12K)
free with in-app purchases
7
WolframAlpha
WolframAlpha
WolframAlpha
Knowledge, Homework, Calculate
Free

This app serves as a powerful computational knowledge engine for homework and research. It offers comprehensive support across numerous academic subjects, from math and physics to biology and economics. Unlock advanced features like step-by-step solutions and photo input for a more in-depth learning experience.

Step-by-step solutions with hintsPhoto input for math problemsInput Assistants for various subjects
πŸ“š Education
(124)
free with in-app purchases
8
Calculator for iPadβ‚Š
Calculator for iPadβ‚Š
Calculator for iPadβ‚Š
Basic, Scientific, Plus Calc
Free

This app offers both basic and advanced scientific calculations with an intuitive interface designed for tablets and phones. It includes features like currency conversion, calculation history, and the ability to share results. An optional premium membership removes ads and provides enhanced support.

Basic & Scientific CalculatorAdvanced Scientific FunctionsLive Currency Converter
πŸ”§ Utilities
(126K)
free with in-app purchases
9
GraphNCalc83
GraphNCalc83
GraphNCalc83
Graphing calculator
$12.99

This app offers a powerful graphing calculator experience with touch-based input for enhanced interaction. It supports natural textbook notation, advanced math functions, and various plotting capabilities. Users can also utilize its programming features and built-in tools like unit conversion and a periodic table.

Touch-based graphing and editingNatural textbook notation inputAdvanced math and statistical functions
πŸ“š Education
(3.8K)
paid
10
Desmos Graphing Calculator
Desmos Graphing Calculator
Desmos Graphing Calculator
by Desmos, Inc.
Free

Explore mathematical concepts by graphing any equation, from simple lines to complex series. This powerful tool allows for interactive exploration with sliders, data tables, and animations. It also includes a scientific calculator and supports inequalities and accessibility features.

Graph any equation (polar, cartesian, parametric)Interactive sliders for function transformationsInput and plot data with tables
πŸ“š Education
(1.3K)
free
11
Chegg Study - Homework Help
Chegg Study - Homework Help
Chegg Study - Homework Help
Expert Answers & College App
Free

This app provides homework help and personalized study support for millions of students across 80 subjects. Access millions of explained solutions, flashcards, and expert Q&A to master tough concepts and prepare for exams. Utilize AI-powered solutions for quicker assistance.

Step-by-step explained solutionsFlashcards for subjectsExpert Q&A responses
πŸ“š Education
(205K)
free with in-app purchases
12
Orenda
Orenda
Orenda
Pool Calculator and Education
Free

This app helps you master pool chemistry by accurately calculating chemical dosages and balancing water based on the LSI. It offers a user-friendly experience for both novices and professionals, including a volume estimator and educational videos.

Chemical dosing calculatorLSI water balancingPool volume estimator
πŸ“Š Productivity
(452)
free
13
The Elements by Theodore Gray
The Elements by Theodore Gray
The Elements by Theodore Gray
Explore the Periodic Table
$9.99

Explore the building blocks of the universe with this interactive guide to the periodic table. Discover beautifully photographed elements, fascinating stories, and detailed 3D models of over 500 objects, all presented in multiple languages.

Living periodic table interfaceRotating 3D element samplesDetailed 3D object models
πŸ“š Education
(118)
paid
14
Fraction Calculator Plus #1
Fraction Calculator Plus #1
Fraction Calculator Plus #1
Decimal to Fractions Converter
Free

Easily perform fraction calculations including addition, subtraction, multiplication, and division. Convert fractions to decimals and vice versa with a clear, user-friendly interface. Ideal for students, cooks, and DIYers needing quick and accurate fraction management.

Add, subtract, multiply, and divide fractionsConvert fractions to decimalsAutomatically simplifies fractions
πŸ“Š Productivity
(22K)
free with in-app purchases
15
Math problem solver, photo
Math problem solver, photo
Math problem solver, photo
algebra, trigonometry scanner
Free

This app assists students with their math homework by solving a wide range of problems. It offers features for algebra, trigonometry, and calculus, including graphical analysis and equation solving. Optional subscriptions provide unlimited access to all features.

Graphical curve sketchingEquation solving (higher degree, exponential, trig)Integral and derivation calculations
πŸ“š Education
(558)
freemium
16
Math AI Homework Helper,Solver
Math AI Homework Helper,Solver
Math AI Homework Helper,Solver
Algebra calculator free of ads
Free

This app provides instant, step-by-step solutions for a wide range of math problems, from basic arithmetic to calculus. Users can scan math problems with their camera and receive detailed explanations, multiple solving methods, and graphing tools. It's designed to help students understand and solve challenging math questions quickly.

Scan math problems with cameraStep-by-step explanationsGraphing calculator
πŸ“š Education
(30K)
free with in-app purchases
17
Studdy: AI Tutor & Math Solver
Studdy: AI Tutor & Math Solver
Studdy: AI Tutor & Math Solver
College & K-12 Homework Helper
Free

This AI-powered tutor assists students with homework by providing step-by-step explanations for math and science problems. It offers personalized tutoring, video tutorials, and practice problems to help improve understanding and grades.

AI-powered step-by-step problem solverPhoto scanning for homework problemsPersonalized 1:1 AI tutoring
πŸ“š Education
(13K)
freemium
18
Calculator⁼
Calculator⁼
Calculator⁼
Fraction, Scientific Calc +
Free

This app offers a clean and intuitive interface for both basic arithmetic and advanced scientific calculations. It includes a history tape to review past computations and supports various mathematical operations, making it suitable for everyday use and complex problem-solving.

Basic & Scientific CalculatorLive Currency ConverterHistory Tape
πŸ”§ Utilities
(357K)
free with in-app purchases
19
Calculator HD Pro Lite
Calculator HD Pro Lite
Calculator HD Pro Lite
Basic & Scientific Calc
Free

This app offers a user-friendly calculator with large buttons and extensive customization options. It features a dual-line display to see input and results simultaneously, saves your calculation history, and provides full scientific functions. Personalize layouts, themes, and even button symbols to suit your needs.

Dual-line displayCalculation historyFull scientific functions
πŸ”§ Utilities
(51K)
ad-supported
20
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Scientific Graphing Calculator
$5.99

This app serves as a powerful scientific graphing calculator, offering advanced mathematical functions and graphing capabilities. It includes a built-in AI assistant for math queries and a comprehensive user manual. Ideal for students and professionals needing complex calculations and visualizations.

Scientific and graphing calculatorAI-powered math assistantComplex number calculations
πŸ“š Education
(12K)
free with in-app purchases