UWorld vs AMBOSS for COMLEX: Step 1 bank or library platform?
First checked October 12, 2026; rechecked October 21, 2026 · Sources: UWorld and AMBOSS pages; AMBOSS bank add-on prices as reported; NBOME for exam facts. Ratings are our editorial assessment from published details, not hands-on tests.
UWorld vs AMBOSS is a choice between two platforms that both cover COMLEX and the USMLE. UWorld’s Level 1 product is its Step 1 bank (3,600+ questions) plus 140+ OMT questions, from $369 for 30 days to $749 for 730 days. AMBOSS has a $149-a-year library membership with 50 questions a month, plus unlimited question-bank bundles reported at about $298 to $448, and lists 5,800+ COMLEX and COMAT questions.
You want UWorld's Step 1 bank and explanations, with a COMLEX OMT supplement.
Buy now on UWorldYou want a library plus more COMLEX-specific questions across COMLEX, USMLE and shelves.
Buy now on AMBOSSSide by side
| UWorld | AMBOSS | |
|---|---|---|
| Our rating | 4.0 / 5 | 4.2 / 5 |
| Price | $369 (30 days), $479 (90 days), $599 (360 days), $749 (730 days) | $149/year membership + unlimited bundles ~$298-$448 (1 to 12 months, reported) |
| COMLEX content | 140+ OMT questions on a 3,600+ Step 1 bank | 5,800+ COMLEX/COMAT questions; 100+ OMM-focused |
| Library | Medical library; 500+ videos optional | Large library linked to questions; osteopathic modules |
| Practice exam | USMLE-style self-assessments | COMLEX score predictor |
| Trial or guarantee | See UWorld | 5-day trial; full-refund guarantee |
From each provider’s own pages, October 2026; AMBOSS bundles as reported.
The main differences
Both suit students taking COMLEX and the USMLE. UWorld’s COMLEX coverage is a supplement on top of its Step 1 bank; AMBOSS lists far more COMLEX and COMAT questions, a COMLEX score predictor and osteopathic modules in its library. UWorld’s edge is its well-known Step 1 bank and platform; AMBOSS’s is breadth across exams and shelves, though its membership alone covers only 50 questions a month.
Choose UWorld if
- Step 1 is your priority and you want UWorld’s bank and explanations.
- You only need a light COMLEX supplement.
Choose AMBOSS if
- You want more COMLEX-specific practice and a COMLEX score predictor.
- You want a library and shelf-exam coverage in the same subscription.
- You want to try free for 5 days first.
Common questions about UWorld vs AMBOSS
Which has more COMLEX questions?
AMBOSS, with 5,800+ COMLEX and COMAT questions against UWorld’s 140+ OMT questions on a Step 1 bank.
Which is better for both COMLEX and USMLE?
Both cover Step 1 and COMLEX; UWorld is built around its Step 1 bank, AMBOSS around a library plus bank.
Which has a free trial?
AMBOSS offers a 5-day free trial and full-refund guarantee; check UWorld’s site for its current offers.
Is this comparison sponsored?
No. We earn no commission from either provider.