Boards are hard. Prep shouldn't be.
Built for internal medicine, and only internal medicine — 1,125 ABIM-blueprint questions written by internists who round too, with full teaching explanations, weak-system analytics, and one-click Anki export.
Live board-style questions · ABIM blueprint
Get board ready.
Test in timed or tutor mode, review with full explanations, and track your weak systems — then export any card straight to Anki.
- Timed, untimed, and tutor-mode sessions
- Full teaching explanations on every question
- Analytics that surface your weakest systems first
- Flashcards, notes, and one-click Anki export
A 67-year-old woman on hydrochlorothiazide is brought in with confusion and a witnessed seizure.
Na+ 118 mEq/L · Urine osm 420 mOsm/kg · Euvolemic on exam
3,000+ topics, handwritten on service.
Every topic is written and edited by practicing internists — concise enough for the elevator ride, complete enough for the attending's follow-up question.
The approach comes first.
Every topic opens with how to think about the chief complaint — the bedside framework internists actually use, no AI required. The differential you can build yourself is the one you'll have on boards, on call, and when the attending asks.
- Stepwise approaches to the classic chief complaints
- Structured the way you present — Hx, exam, workup
- Physical exam signs and procedures, step by step
- Is it real? Serum osm + glucose — rule out pseudohyponatremia.
- Volume status. Hypo-, eu-, or hypervolemic on exam.
- Urine osm. <100: primary polydipsia. >100: ADH is active.
- Urine Na. <20: volume depletion. >40: SIADH, thiazides.
Treat the cause — not just the number.
From symptom to shortlist.
Once the approach is yours, SmartDx is there for speed — describe the presentation and it builds a weighted differential using the same frameworks, with linked topics one tap away.
- Weighted differentials from free-text presentations
- Every suggestion linked to its Indigo topic and calculators
- Built for the pocket check, not to replace judgment
58M, pleuritic chest pain, tachycardic, recent long-haul flight
Free to round with. Fair to board with.
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Indigo is designed, written, and edited by physicians — for the interns and residents we were.
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