Today, at a glance
Today shows the cards that are due, a few new ones, your streak and your daily goal. Flip a card, rate it, move on. Switch to quiz mode when you want to.
ChemRecall
Make chemistry stick.
1,179 carefully written chemistry cards in 30 decks, with spaced repetition that schedules every review for you.
iPhone · iPad · Mac · Apple Watch
Atomic Structure
Try a real ChemRecall card: tap it, then rate it.
The film
ChemRecall, in motion.
A short narrated tour of the app.
Spaced repetition
Cards you miss come back sooner. Cards you know wait longer.
Flip a card, rate it Again, Hard, Good or Easy, and ChemRecall keeps the schedule for you.
Recall
Read the question and answer it in your head before you flip the card.
Rate
Tell the app how it went. Honest ratings make a better schedule.
Return
Open Today and the cards that are due are waiting, with a few new ones and your daily goal.
A closer look
Chemistry, screen by screen.
From the plan for today to the progress you have made. Every screen here is the real app.
Today's chemistry, sortedDue reviews, new cards, daily goal and streak in one place 
From moles to mechanismsFlip, recall, then rate Again, Hard, Good or Easy 
Finish every session strongAccuracy, time, new cards learned and your streak 
Track mastery deck by deck30 decks, from stoichiometry to organic reactions
The library
30 decks. 1,179 cards. All included.
Carefully written for AP Chemistry, general and organic chemistry courses, and MCAT chemistry review. Every deck is on your device from the first launch, and you can add your own.
Atomic Structure
45 cards
Subatomic particles, atomic models, quantum numbers, and electron configuration
Chemical Bonding
47 cards
Ionic, covalent, metallic bonds, Lewis structures, VSEPR, and hybridization
Stoichiometry
42 cards
Moles, molar mass, limiting reactants, percent yield, and solution chemistry
Acids & Bases
41 cards
pH, acid-base definitions, buffers, titrations, and equilibria
Thermochemistry
43 cards
Enthalpy, entropy, Gibbs free energy, and the laws of thermodynamics
Chemical Equilibrium
40 cards
Equilibrium constants, Le Chatelier's principle, and reaction quotients
Organic Reactions
42 cards
Reaction mechanisms, substitution, addition, and elimination
Spectroscopy
42 cards
IR, NMR, mass spectrometry, and UV-Vis structural analysis
Organic Chemistry
43 cards
Hydrocarbons, functional groups, reactions, isomerism, and polymers
Electrochemistry
41 cards
Redox reactions, electrochemical cells, batteries, electrolysis, and corrosion
Biochemistry
51 cards
Proteins, enzymes, metabolism, nucleic acids, and cellular respiration
Periodic Table
30 cards
Periodic trends, groups, periods, and element properties
Show all 30 decksShow fewer decks
Chemical Kinetics
42 cards
Reaction rates, rate laws, activation energy, and reaction mechanisms
Redox Reactions
32 cards
Oxidation states, half-reactions, balancing, and oxidizing agents
Gas Laws
40 cards
Ideal gas law, Boyle's, Charles's, and Dalton's laws, and kinetic theory
Solutions
30 cards
Concentration, solubility, colligative properties, and dilutions
Nuclear Chemistry
32 cards
Radioactivity, decay, half-life, fission, and fusion
Inorganic Chemistry
42 cards
Main group elements, transition metals, and inorganic compounds
Analytical Chemistry
37 cards
Quantitative analysis, instrumentation, and chemical measurement
Coordination Chemistry
42 cards
Complexes, ligands, crystal field theory, and coordination compounds
Quantum Chemistry
41 cards
Wavefunctions, orbitals, quantum numbers, and molecular orbital theory
Polymer Chemistry
38 cards
Polymerization, monomers, plastics, and macromolecular structure
Materials Science
35 cards
Crystals, semiconductors, ceramics, and material properties
Environmental Chemistry
37 cards
Atmospheric, water, and soil chemistry, and pollution
Green Chemistry
48 cards
Sustainable chemistry, atom economy, and benign processes
Medicinal Chemistry
41 cards
Drug design, pharmacophores, structure-activity, and drug action
Forensic Chemistry
21 cards
Trace analysis, toxicology, and chemical evidence techniques
Food Chemistry
30 cards
Nutrients, food additives, preservation, and flavor chemistry
Photochemistry
48 cards
Light-driven reactions, photosynthesis, and excited states
Lab Techniques
36 cards
Distillation, chromatography, titration, and laboratory safety
Features
Built for a few focused minutes a day.
See your progress
A summary after every session, mastery for each deck, streaks and a study heatmap in the Progress tab.
Add your own cards
Create and edit decks, or import cards from a CSV file and export them again. Optional AI card generation with your own OpenAI or Anthropic API key: you review every card before it is added.
front,back
"What is the SI unit for amount of substance?","The mole (mol)"A nudge, not a nag
One daily study reminder at a time you choose, and a System, Light or Dark appearance to match your device.
Study anywhere, even offline.
All 1,179 cards are stored on your device. You only need a connection to buy or restore a purchase and for optional AI card generation with your own API key.
Apple Watch
A few cards, right on your wrist.
Review due cards on Apple Watch; results sync back to your iPhone. Open ChemRecall on your iPhone to send due cards to the watch, then flip and rate them anywhere. The watch works offline once it has synced.
iPad and Mac
Room to think on a bigger screen.
A sidebar layout on iPad and Mac. On Mac, press Space to flip a card and 1 to 4 to rate it. One subscription unlocks iPhone, iPad and Mac. Progress is stored on each device.
Your study data stays on your device.
- No account or sign-up
- No ads, analytics or tracking
- Purchases handled by Apple
- AI only with your own keyOptional AI card generation with your own OpenAI or Anthropic API key. Requests go straight from your device to the provider.
Pricing
Simple pricing.
One purchase unlocks iPhone, iPad and Mac.
Monthly
$9.99 / month
7 days free, then $9.99 every month until you cancel.
Best value: save 49%
Yearly
$59.99 / year
7 days free, then $59.99 every year. That is about $5.00 a month, 49% less than paying monthly.
Lifetime
$99.99 once
Pay once. No subscription and nothing to renew.
How the free trial works
Monthly and yearly plans start with 7 days free for new subscribers. Cancel at least 24 hours before the trial ends and you will not be charged. Otherwise the plan renews automatically at the price shown until you cancel.
Included in every plan
- All 30 decks and 1,179 cards
- iPhone, iPad and Mac with one purchase
- Apple Watch app for quick reviews
- Study sessions, quizzes and progress
- Your own decks, with CSV import and export
- Optional AI card generation with your own OpenAI or Anthropic API key
Prices are in US dollars; the App Store shows the price in your currency. Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and you can manage or cancel them in your Apple Account settings. Restore Purchases is available in the app. One purchase unlocks the app on iPhone, iPad and Mac signed in with the same Apple Account; study progress is stored separately on each device.
Questions, answered.
Something else? Email shankarduttsgd@gmail.com.
Is there a free trial?
Yes. Monthly and yearly plans start with a 7-day free trial for new subscribers. Cancel at least 24 hours before it ends and you will not be charged. Lifetime is a one-time purchase without a trial.
Is there a free version?
No. ChemRecall is a paid app, and you choose a plan when you first open it. The free trial on monthly and yearly lets you use everything before you pay.
Who is it for?
ChemRecall is built for AP Chemistry, general and organic chemistry courses, and MCAT chemistry review. It covers Atomic Structure, Chemical Bonding, Stoichiometry, Acids & Bases, Thermochemistry, Chemical Equilibrium, Organic Reactions and Spectroscopy, among 30 decks in total. AP® is a trademark registered by the College Board; MCAT® is a registered trademark of the Association of American Medical Colleges. These organizations are not affiliated with, and do not endorse, ChemRecall.
Does my progress sync between iPhone, iPad and Mac?
No. One purchase unlocks ChemRecall on iPhone, iPad and Mac with the same Apple Account, but study progress is stored separately on each device. The Apple Watch app is the exception: reviews you do on the watch are sent back to your iPhone.
What does the Apple Watch app do?
It lets you review the cards that are due on your iPhone. Open ChemRecall on your iPhone to send due cards to the watch. You can then flip and rate them on your wrist, even offline, and your ratings sync back to your iPhone.
Can I add my own cards?
Yes. Create your own decks and cards, or import them from a CSV file with front and back columns. You can export decks as CSV as well.
Do I need an AI key?
No. AI card generation is optional. If you want it, add your own OpenAI or Anthropic API key in Settings. When you tap Generate, the app drafts cards for that deck and you review them before they are added. The provider bills any API usage to your own account.
Does it work offline?
Yes. All 1,179 cards are stored on your device. You only need a connection to buy or restore a purchase and to use optional AI card generation with your own OpenAI or Anthropic API key.
How do I cancel?
On iPhone or iPad, open Settings, tap your name, then Subscriptions, and choose ChemRecall. On Mac, open the App Store, click your name, then Account Settings, and manage Subscriptions. Apple handles billing and cancellation.
Start with 1,179 chemistry cards.
ChemRecall for iPhone, iPad and Mac, with an Apple Watch app for reviews on the go.
iPhone · iPad · Mac · Apple Watch