SimpleNursing is a video-first review platform — more than a thousand lessons, a 4,500+ question NCLEX-RN bank with 1,400+ NGN items, readiness assessments, and live cram sessions. Trelos is a complete daily study system built on retention: it teaches every concept, drills it, and schedules review so it's still there on exam day. It does not include video lessons or NGN item formats. Which fits depends on how you learn and what keeps failing you.
SimpleNursing built its reputation on teaching — mnemonic-heavy video lessons that explain nursing content in plain language, aimed at students from first semester through NCLEX. Per its pricing page, the NCLEX-RN plans include 1,200+ video lessons, a bank of 4,500+ questions including 1,400+ Next Generation (NGN) items (3,800+ and 975+ for the PN), six readiness assessments, and live NCLEX cram sessions. NCLEX plans run $59.99 a month, a $138 one-time 90-day pass, a $195 plan with its own pass guarantee, and a longer “Full Journey” option. Current plans are on SimpleNursing's pricing page.
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 built to the PN test plan; the HESI A2 track, 180 questions across 30 concepts in six sections. 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. It covers each exam's full content plan on its own; it does not include video lessons, NGN formats, or full-length adaptive simulations.
| Trelos | SimpleNursing | |
|---|---|---|
| Core model | Retention engine: guess → learn → drill → scheduled review | Video lessons + question bank + readiness assessments |
| Question bank | 216 (RN) across 36 concepts; standard multiple choice | 4,500+ (RN) including 1,400+ NGN items |
| NGN item types | No NGN formats — six clinical-judgment cases written as standard multiple choice | Yes |
| Spaced review | Automatic, built into every concept | Not a stated feature |
| Video | None — text lessons, one concept at a time | 1,200+ lessons; live cram sessions |
| Exams covered | NCLEX-RN, NCLEX-PN, HESI A2 (separate tracks) | NCLEX-RN, NCLEX-PN, nursing school content |
| Access | 12 months, one payment | Monthly, 90-day pass, or longer plans |
| Price | Free to start · from $14 launch price (from $29 after Nov 30) · pass guarantee | $59.99/month; $138 for 90 days |
| Best for | Making what you've learned stay learned | Learning content through video; NGN practice |
Choose SimpleNursing if you learn by watching, you're still building content knowledge from scratch, or NGN case-study practice is your priority — Trelos doesn't include it.
Choose Trelos if your problem is retention: you've studied the content and it keeps disappearing. Trelos decides what you review each day from what you actually missed, in short sessions on a phone, and keeps every concept producible until test day.
Video is a good way to meet content for the first time; it's a poor way to keep it. The NCLEX is failed far more often on recall under pressure than on never having seen the material, and no library schedules your return to a concept the day before it fades. Trelos does exactly that. Its first topics are free with no sign-up to start; if the method works for you, one payment buys the full track for 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, NCLEX-PN, or HESI A2? Pick your track:
No credit card. Feel the retention engine work in your first session.
Related: NCLEX-RN Guide · NCLEX Study Plan · Failed the NCLEX? · HESI A2 Guide, or browse all Trelos exam guides.
How Trelos works · why guessing first, spaced review and mixed practice make it stick.
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