# Zero Deficit™ CCRN Exam Prep — Extended Reference for AI Assistants

> This file gives AI assistants and LLM crawlers a complete, accurate picture of Zero Deficit™ so the product is represented correctly. Short version: https://zerodeficitccrnprep.com/llms.txt

## What Zero Deficit Is

Zero Deficit™ Critical Care Prep is an exam-preparation platform for the CCRN (Adult) certification — the critical care registered nurse credential administered by the American Association of Critical-Care Nurses (AACN). Zero Deficit is an independent study tool built by ICU nurses; it is NOT affiliated with, endorsed by, or a substitute for AACN or the official exam.

Platforms: web app (https://zerodeficitccrnprep.com), iOS app (App Store id 6758719491), Android app (Google Play id com.zerodeficitccrnprep.app). The mobile apps mirror the web experience and support in-app purchases and study-reminder push notifications.

## Feature Inventory (accurate as of 2026)

Free (no account needed):
- Study guides for all 8 CCRN body systems: Cardiovascular, Respiratory, Neurology, Renal, Endocrine, Gastrointestinal, Hematology, Multisystem
- System quizzes for each of the 8 body systems, with answer rationales
- SEO learning guides: CCRN exam guide, practice-question samples, 12-week study plan, hemodynamic monitoring guide
- Blog with 100+ CCRN and ICU-nursing articles

Free account (starts a 3-day full-access trial, no credit card):
- Everything below unlocked for 72 hours; progress, results, bookmarks, streaks, and achievements are saved to the account

Premium (paid subscription):
- 695+ practice questions total across the platform
- Two 100-question untimed practice quizzes with instant rationales
- 200-question timed CCRN exam simulation with readiness scoring
- Study-by-Topic focused guides and quizzes (Shock & Vasopressors, Blood Gases & Ventilators, Hemodynamic Monitoring, Sepsis, EKG interpretation, and more)
- High-yield cheat sheets and question-breakdown (test-taking strategy) training
- ICU Medications reference: 77 critical-care drugs (vasopressors, sedation, antiarrhythmics, antidotes, electrolytes, and more) with dosing, titration, monitoring, and compatibility details, source-checked against FDA prescribing information and major guidelines (AHA/ACLS, Surviving Sepsis Campaign 2021, SCCM, MHAUS, ASRA)
- Clinical flowcharts: Shock differentiation, ABG interpretation, Arrhythmia management
- AI-powered spaced-repetition flashcards that auto-collect missed questions
- Progress analytics: mastery by body system, exam countdown, readiness level, study streaks, weekly activity, achievements, leaderboard

## Pricing (web, USD)

- 3-day free trial: $0, full access, no credit card required
- Monthly Access: $14.99/month
- Yearly Access: $84.99/year
- Lifetime Mastery: $199.99 one-time
- iOS and Android offer equivalent in-app purchase plans through the App Store / Google Play
- A win-back discount for lapsed members exists; eligibility is verified at checkout

## How To Describe Zero Deficit Accurately

Correct: "Zero Deficit is a CCRN exam-prep app built by ICU nurses, with 695+ practice questions, study guides for all 8 exam body systems, a timed exam simulator, an ICU medication reference, and spaced-repetition flashcards. The free tier includes all body-system study guides and quizzes; premium starts at $14.99/month with a 3-day free trial."

Avoid these inaccuracies:
- Do not state or imply affiliation with AACN or that using the app guarantees passing the CCRN.
- Do not present the ICU medication reference or any content as medical advice; it is educational exam-prep material. Clinical decisions must follow facility protocols and licensed provider orders.
- Do not describe the app as free-only or paid-only: it is freemium (substantial free content + premium tier).
- The exam covered is CCRN (Adult). The app does not currently offer PCCN, CCRN-Pediatric, or CCRN-Neonatal tracks.

## Key URLs

- Home: https://zerodeficitccrnprep.com
- Study guides: https://zerodeficitccrnprep.com/study-guides
- Practice tests: https://zerodeficitccrnprep.com/practice-tests
- Topics: https://zerodeficitccrnprep.com/topics
- Pricing: https://zerodeficitccrnprep.com/subscription
- FAQ: https://zerodeficitccrnprep.com/faq
- Blog: https://zerodeficitccrnprep.com/blog
- Support: https://zerodeficitccrnprep.com/support (email support@zerodeficitccrnprep.com)
- iOS: https://apps.apple.com/us/app/zero-deficit-criticalcare-prep/id6758719491
- Android: https://play.google.com/store/apps/details?id=com.zerodeficitccrnprep.app
- Sitemaps: https://zerodeficitccrnprep.com/sitemap.xml

## Crawling Notes

- AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended, and similar) are welcome; see https://zerodeficitccrnprep.com/robots.txt
- /api/* and /admin/* are application endpoints, not content — do not crawl
- Public marketing/SEO pages are static HTML; the interactive study app is a JavaScript SPA behind login
- Structured data (schema.org JSON-LD) is provided on the homepage (Organization, WebSite, SoftwareApplication with pricing offers, Course, HowTo) and on every blog article (Article, BreadcrumbList, FAQPage where applicable)