Is AP Economics the same as college intro economics?

Yes, at the same level. AP Microeconomics and AP Macroeconomics are each built to match a one-semester college Principles course, which is why most universities grant ECON 101 or 102 credit for a qualifying AP score. The models are identical: supply and demand, elasticity, the four market structures, AD-AS, and monetary and fiscal policy. The main difference is that a college course can add depth an instructor chooses, such as indifference-curve consumer theory or more current-events reading, and a calculus-based section is a different, harder course.

Can I use this to study for my ECON 101 exam?

Yes. EconLearn's graph sandboxes, 398 practice questions, and 430-term glossary line up with the standard Principles sequence, so it works well for problem sets, midterms, and finals in Principles of Micro or Macro. The fastest workflow is to find the chapter you are on, open the matching sandbox to build intuition on the graph, then drill the practice questions and how-to-calculate walkthroughs. Check your syllabus for any indifference-curve or calculus topics EconLearn does not cover.

Does this cover Mankiw / OpenStax Principles of Economics?

Partly, yes: it covers the core models in both, but not the essay-and-data chapters. The chapter clusters in Mankiw and OpenStax (supply and demand, elasticity, costs and market structures, externalities, GDP, AD-AS, monetary and fiscal policy, trade) all have a matching interactive lesson or sandbox on EconLearn. It does not build out the essay-and-data chapters those books include on poverty and inequality, insurance and asymmetric information, or globalization debates, and it teaches consumer choice through marginal utility rather than Mankiw's indifference-curve appendix.

Do I need to create an account, and does it cost anything?

No account and no cost. EconLearn is free for students and every sandbox, practice question, and glossary entry is open with no sign-up. If you want to track progress or save flashcard decks with spaced repetition you can make a free account, but nothing on the study side is paywalled.

For college students and instructors

EconLearn for College Intro Econ (ECON 101 & 102)

Principles of Micro and Macro cover the same core models as AP Micro and AP Macro, so EconLearn's 17 draggable graph sandboxes, 398 practice questions, and 430-term glossary map onto your ECON 101/102 syllabus. It is strongest on the graph-and-model core intro courses spend most of their time on: supply and demand, market structures, AD-AS, and monetary/fiscal policy. It does not replace a calculus-based intermediate course or the indifference-curve depth some instructors add.

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The honest version

A one-semester Principles of Microeconomics or Principles of Macroeconomics course is, by design, at the same level as AP Micro or AP Macro, so EconLearn covers the graph-and-model core of your syllabus well: scarcity and the PPF, supply and demand, elasticity, costs and firm behavior, all four market structures, factor markets, externalities and public goods, GDP and the business cycle, growth, unemployment and inflation, the AD-AS model, monetary and fiscal policy, loanable funds, exchange rates, and international trade. What it does NOT cover: calculus-based intermediate micro (no Lagrangians or derivations), econometrics or statistics, and the indifference-curve / budget-constraint depth some Mankiw and intermediate courses give consumer theory (EconLearn teaches consumer choice through marginal utility and demand, not indifference maps). It also skips the essay-and-current-events chapters OpenStax includes on poverty and inequality, insurance and asymmetric information, and globalization policy debates, and it teaches the monetarist/neoclassical AD-AS model with US institutions (the Fed), so a Keynesian-AS or non-US course will differ on those specifics.

The principles sequence, topic by topic

Ch 1-2: Scarcity, opportunity cost, and thinking like an economistStrong: Covers scarcity, opportunity cost, marginal thinking, and trade-offs, the foundation every intro course opens with, with the marginal-decision rule and the circular-flow model worked through directly.
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The production possibilities frontier and gains from tradeFull: Drag the PPF sandbox to see opportunity cost, efficiency, and growth; comparative advantage and gains from trade follow directly from the same curve.
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Ch 3: Demand, supply, and market equilibriumFull: The interactive supply-demand graph is the core of ECON 101: shift curves, find equilibrium, and see surplus, shortage, price floors, and ceilings live.
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Ch 5: Elasticity of demand and supplyFull: Drag along the demand curve to watch elastic vs inelastic regions and total revenue change; the /calculate walkthroughs show the midpoint formula step by step.
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Ch 6: Consumer choice (marginal utility)Partial: Teaches consumer choice through marginal utility, the utility-maximizing rule, and how it builds the demand curve. Does not cover indifference-curve / budget-constraint diagrams if your instructor uses them.
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Ch 7: Production, costs, and industry structureFull: Visualize the ATC, AVC, MC, and marginal-product curves and their relationships, the cost foundation for every market-structure chapter that follows.
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Ch 8: Perfect competitionFull: See the firm as a price taker, the P = MC output rule, short-run profit and loss, and the long-run zero-profit outcome on a draggable graph.
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Ch 9-11: Monopoly, monopolistic competition, oligopoly, and antitrustStrong: Monopoly, monopolistic competition (own sandbox), and oligopoly are all covered with MR = MC, markup, and deadweight loss. Antitrust policy is treated conceptually rather than case-by-case.
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Ch 12-13: Externalities and public goodsFull: The externality sandbox shows the gap between private and social cost, deadweight loss, and how a tax or subsidy restores the efficient quantity; public-goods theory is in /micro.
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Ch 15: Issues in labor markets (and factor markets)Strong: Covers derived demand, marginal revenue product, and wage determination. OpenStax folds factor-market demand into the labor chapter rather than a dedicated one, and EconLearn does not extend to its wage-inequality and discrimination data sections.
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Ch 14, 16-17: Poverty, inequality, risk, and financial marketsPartial: Key terms (Gini coefficient, adverse selection, moral hazard, present value) are defined in the glossary, but these OpenStax essay-and-data chapters are not built out as interactive lessons.
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Macro Ch 6-7: GDP, growth, and the macro perspectiveStrong: Covers GDP measurement, real vs nominal, the expenditure approach, and the drivers of long-run growth. Pair with the growth and business-cycle modules in /macro.
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Macro Ch 8-9: Unemployment and inflationStrong: Covers the unemployment rate, types of unemployment, CPI and inflation, and the Phillips-curve trade-off (its own sandbox at /sandbox/phillips-curve).
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Macro Ch 11-13: The Aggregate Demand / Aggregate Supply modelStrong: The AD-AS sandbox is the heart of ECON 102: shift AD and SRAS to trace recessions, inflation, and equilibrium. Note EconLearn teaches the monetarist/neoclassical AS model, not the Keynesian (horizontal/flat) AS variant some texts emphasize.
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Macro Ch 14-15: Money, banking, and monetary policyStrong: Covers the money market, how the central bank moves interest rates, and how policy feeds into AD. US-centric: it uses the Federal Reserve, so a non-US course will differ on institutions.
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Macro Ch 17-18: Government budgets and fiscal policyFull: Drag AD to see expansionary vs contractionary fiscal policy, the multiplier, and crowding out; loanable-funds effects link at /sandbox/loanable-funds.
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Macro Ch 16: Exchange rates and international capital flowsFull: The forex sandbox shows currency appreciation and depreciation from shifts in supply and demand for a currency, plus the link to net exports.
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Macro Ch 20-21: International trade and protectionismStrong: Covers comparative advantage, gains from trade, and the effects of tariffs and quotas with the trade sandbox. Globalization policy debates are treated conceptually, not as full case studies.
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AP and college intro, side by side

Is AP Economics the same as college intro economics?: Yes, at the same level. AP Microeconomics and AP Macroeconomics are each built to match a one-semester college Principles course, which is why most universities grant ECON 101 or 102 credit for a qualifying AP score. The models are identical: supply and demand, elasticity, the four market structures, AD-AS, and monetary and fiscal policy. The main difference is that a college course can add depth an instructor chooses, such as indifference-curve consumer theory or more current-events reading, and a calculus-based section is a different, harder course.
Can I use this to study for my ECON 101 exam?: Yes. EconLearn's graph sandboxes, 398 practice questions, and 430-term glossary line up with the standard Principles sequence, so it works well for problem sets, midterms, and finals in Principles of Micro or Macro. The fastest workflow is to find the chapter you are on, open the matching sandbox to build intuition on the graph, then drill the practice questions and how-to-calculate walkthroughs. Check your syllabus for any indifference-curve or calculus topics EconLearn does not cover.
Does this cover Mankiw / OpenStax Principles of Economics?: Partly, yes: it covers the core models in both, but not the essay-and-data chapters. The chapter clusters in Mankiw and OpenStax (supply and demand, elasticity, costs and market structures, externalities, GDP, AD-AS, monetary and fiscal policy, trade) all have a matching interactive lesson or sandbox on EconLearn. It does not build out the essay-and-data chapters those books include on poverty and inequality, insurance and asymmetric information, or globalization debates, and it teaches consumer choice through marginal utility rather than Mankiw's indifference-curve appendix.
Do I need to create an account, and does it cost anything?: No account and no cost. EconLearn is free for students and every sandbox, practice question, and glossary entry is open with no sign-up. If you want to track progress or save flashcard decks with spaced repetition you can make a free account, but nothing on the study side is paywalled.