NURSING.com is a full nursing-school-to-NCLEX platform: 6,500+ practice questions, thousands of lesson videos, the SIMCLEX adaptive simulator, adaptive study plans, and a 200% money-back guarantee tied to SIMCLEX. Trelos is a complete daily study system built on retention: it teaches every concept, drills it, and schedules review so it stays. It does not include video, an adaptive simulator, or NGN item formats. One is a library with a simulator; the other is an engine that decides what you review today.
NURSING.com's plans include its 6,500+ question bank, a large video library, SIMCLEX (an adaptive NCLEX simulator; attempts vary by plan), adaptive study plans, and an NCLEX readiness score. Per its pricing page (November 2026), plans are $49 a month with a 3-day trial, $99 one-time for three months, or lifetime access at nine payments of $39. Its guarantee: pass a SIMCLEX but fail the NCLEX and it refunds your purchase and matches it, subject to its policy terms.
Trelos is a mobile-first retention engine. Every concept runs the same loop: guess first, short lesson, practice, then scheduled review timed to just before you'd forget. Confident mistakes come back first. The NCLEX-RN track covers 216 questions across 36 concepts in six client-needs sections; the NCLEX-PN track, 216 questions across 36 concepts. All standard multiple choice, including six NGN-style clinical-judgment cases written as standard questions; Trelos has no NGN item formats such as bowtie, matrix or extended drag-and-drop. No video, no full-length adaptive simulation. Trelos covers the full content plan on its own.
| Trelos | NURSING.com | |
|---|---|---|
| Core model | Retention engine: guess → learn → drill → scheduled review | Video library + question bank + adaptive simulator |
| Question bank | 216 (RN) across 36 concepts | 6,500+ |
| Adaptive simulation | None | SIMCLEX adaptive simulator |
| NGN item types | No NGN formats — six clinical-judgment cases written as standard multiple choice | Included, per its listings |
| Spaced review | Automatic, built into every concept | Adaptive study plans (per its description) |
| Access | 12 months, one payment | Monthly, 3 months, or lifetime |
| Price | Free to start · $19 launch price ($39 after Nov 30) · pass guarantee | $49/month; $99 for 3 months; lifetime 9 × $39 |
| Guarantee | Access extended free until you pass, conditions apply | 200% money-back if you pass SIMCLEX and fail the NCLEX, conditions apply |
| Best for | Keeping concepts producible for weeks | Breadth: library, simulator, readiness scoring |
Choose NURSING.com if you want one platform spanning all of nursing school, plus an adaptive simulator that mimics the NCLEX's shape — and you'll actually use the breadth.
Choose Trelos if breadth is the problem: you have more material than you can keep alive, and what you need is something that returns each concept just before it fades, a few minutes at a time, with no decisions left to you about what to study next.
NURSING.com's three-month plan is a lot of library for the money, and SIMCLEX is a real asset for rehearsing the adaptive format. But a library doesn't decide what you review tomorrow; you do, and that's where preparation usually breaks. Trelos makes that decision for you every day, from what you actually missed. Try the free topics; if the method holds, one payment buys 12 months, extended free if you meet the guarantee's conditions and don't pass.
Pass guarantee: learn every concept in your track and keep up your scheduled reviews, and if you still don't pass, your access is extended free — three more months per attempt — until you do. It's an extension, not a refund.
Preparing for the NCLEX-RN or NCLEX-PN? Pick your track:
No credit card. Feel the retention engine work in your first session.
Related: NCLEX-RN Guide · NCLEX-PN Guide · NCLEX Study Plan · Failed the NCLEX?, or browse all Trelos exam guides.
How Trelos works · why guessing first, spaced review and mixed practice make it stick.
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