- 3M Littmann Learning Institute (APPLE)
- 3M Littmann Learning Institute (ANDROID)
- (Free 30-day trial*) Sample heart and lung sounds, also quizzes. 30-day trial is useful for beginners when first introducing auscultation.
- *Note: It costs $50 for the content after the trial, which is overpriced. There is apparently a serial number that comes with purchase of a Littmann stethoscope to get content free with no time limit.
*Special mention for 30-day free trial:
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