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VerChem
Chemistry Calculator for Students
From periodic table to titration curves — every general chemistry tool you need. NIST/IUPAC reference data, step-by-step solutions, 100% offline.
Pay once, use forever — No subscription, no ads
Complete General Chemistry Coverage
Interactive tools, calculators, and lab essentials
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Interactive Tools
Full periodic table with 118 elements, VSEPR molecular geometry, Lewis structures, compounds database
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Calculators
Equation balancer, stoichiometry, pH, gas laws, thermodynamics, kinetics, electrochemistry, electron configuration
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Lab Tools
Titration with SVG curves, nuclear chemistry, solution preparation, unit converter across six categories
Every Tool at a Glance
Tap any tool to see step-by-step solutions
Built for How Students Actually Study
Not just answers — understanding
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Step-by-Step Solutions
See every calculation step with proper formulas and units. Learn the process, not just the answer.
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Interactive SVG Visualizations
pH gradient scales, titration curves, orbital box diagrams, VSEPR molecular shapes — all rendered in real time.
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Formula Reference Library
Searchable collection of essential chemistry equations organized by topic. Copy any formula with one tap.
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100% Offline
Works without internet — in exam halls, on lab benches, in lectures. All element data is bundled in the app.
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Favorites & Quick Switch
Star your most-used tools and switch between them instantly without returning to the home screen.
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12 Languages
English, Japanese, Korean, Chinese, Spanish, Portuguese (Brazil), French, German, Indonesian, Russian, Italian, Thai.
Why a Calculator App, Not AI?
For chemistry calculations, precision matters
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AI can hallucinate — chatbots sometimes invent formulas or return wrong molar masses. VerChem uses verified NIST/IUPAC data every time.
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Instant & offline — results in milliseconds without internet. AI chatbots need a connection and often take seconds to respond.
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Consistent results — same inputs always give the same outputs. AI responses vary between sessions and may contradict themselves.
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Pay once, use forever — $4.99 one-time purchase. AI chatbot subscriptions cost $20–240/year.
Available in 12 Languages
Reaching chemistry students worldwide
English
🇯🇵 Japanese
🇰🇷 Korean
🇨🇳 Chinese
🇪🇸 Spanish
🇧🇷 Portuguese
🇫🇷 French
🇩🇪 German
🇮🇩 Indonesian
🇷🇺 Russian
🇮🇹 Italian
🇹🇭 Thai
Trusted Data Sources
Every value comes from peer-reviewed references
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NIST Atomic Spectra Database — Standard reference for spectroscopic data
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IUPAC 2021 Standard Atomic Weights — Internationally accepted element masses
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CODATA 2018 Physical Constants — Avogadro, Faraday, gas constant, Boltzmann
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CRC Handbook of Chemistry and Physics — Thermodynamic data, reduction potentials
Educational use: VerChem is designed for educational purposes only. Always verify critical calculations with your instructor or official references. Not intended for professional laboratory or industrial use.
Every Chemistry Calculation. One App.
Periodic table, equation balancing, pH, gas laws, titration curves, and more. Step-by-step solutions, 12 languages, 100% offline.
Frequently Asked Questions
Common questions about VerChem
What is the best chemistry calculator app for students?
VerChem is a complete general chemistry toolkit with a full periodic table, equation balancer, stoichiometry calculator, pH solver, gas laws, titration curves, and more. It uses verified NIST/IUPAC data and works 100% offline for $4.99 one-time.
Can I balance chemical equations on my phone?
Yes. VerChem includes an automatic equation balancer that balances chemical equations and classifies reaction types. It shows step-by-step solutions so you can learn the process alongside the result.
Is there an app with a periodic table and calculators together?
VerChem combines a full interactive periodic table of 118 elements with calculators for stoichiometry, pH, gas laws, thermodynamics, kinetics, electrochemistry, and more. All element data comes from NIST and IUPAC references.
What app can I use to calculate pH and buffer solutions?
VerChem has a dedicated Solutions and pH calculator that handles acid-base equilibria and buffer calculations. It also includes a titration tool with interactive SVG curves showing equivalence points.
How accurate are chemistry calculator apps compared to lab references?
VerChem uses data from NIST Atomic Spectra Database, IUPAC 2021 Standard Atomic Weights, CODATA 2018 Physical Constants, and CRC Handbook. Every value comes from peer-reviewed references, making results consistent and reliable.
Chemistry calculator app vs ChatGPT — which should I use?
For chemistry calculations, VerChem is more reliable than AI chatbots. AI can hallucinate formulas or return wrong molar masses. VerChem uses verified NIST/IUPAC data, works offline, and gives instant deterministic results for $4.99 one-time versus recurring AI subscriptions.
Does VerChem work offline during exams?
Yes. VerChem is 100% offline — all 118 elements, calculators, and reference data are bundled in the app. It works in exam halls, on lab benches, and in lectures with no internet connection needed.