DrPhos' Significant Figures
Count Sig Figs Easily
$0.99 · In‑App Purchases · Designed for iPad. Not verified for macOS.
Get instant help with sig figs—no ads, no fluff. Trusted by students and built by a chemistry professor. Upgrade with in-app purchases to unlock more chemistry tools.
Master significant figures with ease — and unlock powerful chemistry tools as you go.
Start free with the Sig Fig Counter — a simple, accurate way to evaluate significant figures for chemistry, physics, and lab work. Built by a chemistry professor for real classroom use.
Unlock additional tools when you’re ready:
• Molar Mass Calculator — Instantly calculate molecular weights
• Stoichiometry Solver — Automate moles, mass, and volume calculations
• Reaction Balancer — Balance chemical equations with one tap
• pH and Kinetics Calculators — For acids, bases, and rate laws
• Ionic Compound Builder — Name compounds and build formulas
• General Naming Helper — Recognize covalent, binary, and ionic rules
• Quadratic Solver — Handy for kinetics and physical chemistry
Whether you’re a student, tutor, or instructor, this app is designed to make chemistry faster, cleaner, and more accurate — with no ads and no clutter.
Used by students, built by a professor.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• New split-view layout for iPad
• Updated gradient background for a modern look
• Streamlined navigation experience
• App Store review prompt now only appears after returning to the main menu
• Bug fixes and performance improvements
The developer, Monte L Helm, 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
- Monte L Helm
- Size
- 9.8 MB
- Category
- Education
- Compatibility
Requires iOS 18.5 or later.
- iPhone
Requires iOS 18.5 or later. - iPad
Requires iPadOS 18.5 or later. - Mac
Requires macOS 15.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.5 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Quadratic Equation Solver $0.99
- Stoichiometry $0.99
- General Chemistry Naming $0.99
- Solution Concentrations $0.99
- Molar Mass Calculator $0.99
- Ionic Compound Builder $0.99
- Reaction Balancer $0.99
- Significant Figures Counter $0.00
- Kinetics Calculator $0.99
- Science Calculator $0.99
- Copyright
- © Dr. Phosphorus Presents 2025