ChemCalc - Mole Calculator
Moles, Mr & Equation Balancer
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
ChemCalc is the ultimate chemistry calculator built for students. Whether you're studying for GCSEs, A-Levels, or the IB Diploma, ChemCalc instantly solves the most time-consuming chemistry calculations so you can focus on understanding the concepts.
5 ESSENTIAL CALCULATORS IN ONE APP:
• Mass & Mr Calculator: Instantly calculate molar mass (Mr), mass, and moles using the interactive formula triangle with common compound shortcuts.
• Concentration Calculator: Work out molarity, volume, or moles with full, exam-style step-by-step working and revision tips.
• Gas Volume Calculator: Solve gas volume problems at room temperature and pressure (RTP) with clear visual guides.
• Reacting Masses (Pro): Calculate theoretical yields and exact reactant masses across balanced chemical equations. Essential for quantitative chemistry.
• Equation Balancer (Pro): Type in any chemical equation and get perfectly balanced stoichiometry in seconds.
WHY STUDENTS LOVE CHEMCALC:
Step-by-step working for every calculation, not just the answer
Interactive formula triangles that teach you the method
Built-in exam tips and revision guidance
Beautiful light and dark mode
Works completely offline, perfect for revision sessions
No ads on free features
ChemCalc is part of the Chemistry Made Easy ecosystem
Download now and make chemistry calculations effortless.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• New iOS Haptics: The calculator now features native haptic feedback for a premium feel (toggleable in the new Settings menu).
• RTP vs STP: Added a new toggle to switch between Room Temperature & Pressure (24 dm³) and Standard Temperature & Pressure (22.4 dm³), perfect for both GCSE and IB students.
• UI Polish: Fluid navigation animations, subscript formatting for balanced chemical equations (e.g., H₂O), and real-time Mr calculation badges.
• Auto-formatting: Huge numbers now automatically format into readable scientific notation.
• Resolves an issue with In-App Purchase validation and dark mode persistence.
The developer, Paul Leadbeater, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Paul Leadbeater
- Size
- 12.7 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- ChemCalc Pro $1.99
- Copyright
- © 2026 Chemistry Made Easy