Zero Deficit: CCRN Exam Prep

ZERO DEFICIT

In-app purchases

About this app

Pass the CCRN exam with Zero Deficit — critical care nursing certification prep built by ICU nurses who actually passed.

🎯 EVERYTHING YOU NEED TO PASS

• 695+ CCRN practice questions with detailed rationales, covering every body system on the AACN exam blueprint
• 8 in-depth study guides weighted exactly like the real exam: Cardiovascular (17%), Respiratory (15%), Multisystem (14%), Neurology (12%), Renal, GI, Endocrine, Hematology
• 200-question timed CCRN exam simulation with scoring and a readiness level
• Two 100-question practice quizzes to build test-day stamina
• AI-powered question generator that creates fresh questions tuned to your weak areas
• Spaced-repetition flashcards based on cognitive science
• High-yield cheat sheets and question-breakdown strategy training

💊 ICU CLINICAL REFERENCE

• 77-medication ICU drug reference: vasopressors, sedation, anticoagulants, antiarrhythmics and more — with typical dose ranges
• Hemodynamic monitoring guide: normal values, PA catheter waveforms, shock profiles
• Shock, ABG and arrhythmia flowcharts for rapid review

🔥 STAY ON TRACK

• Exam countdown with readiness tracking
• Daily question notifications that keep your streak alive
• Progress analytics by body system so you always know where to focus
• Study streaks, achievements and a weekly leaderboard

🩺 BUILT FOR ICU NURSES, BY ICU NURSES

Every feature came from real feedback during the 30 most stressful days before exam day. 12-hour shift followed by a 2-hour study session? We built the app we wish we'd had.

📚 STUDY ANYWHERE

Print any study guide as a clean, formatted PDF for break-room review. All 8 body-system study guides and their quizzes are free — no account required.

🎓 WHO USES ZERO DEFICIT

✓ ICU registered nurses preparing for AACN CCRN (Adult) certification
✓ CVICU, MICU, SICU, NSICU and CCU staff
✓ ER nurses transitioning to critical care
✓ Travel nurses studying between assignments
✓ Nurse managers earning the CCRN to stay clinical

💳 SIMPLE PRICING

Free: all 8 body-system study guides + system quizzes. A free account starts a 3-day full-access trial — no credit card required. Go premium with Monthly, Yearly or Lifetime access to unlock the full question bank, exam simulation, cheat sheets, ICU drug reference and flashcards.

Content is written and source-checked against FDA labels and major clinical guidelines (AHA/ACLS, Surviving Sepsis Campaign, SCCM). Educational material — not medical advice.

CCRN® is a registered trademark of AACN Certification Corporation. Zero Deficit is an independent study platform and is not affiliated with or endorsed by AACN.

What’s new

Updated for Android 16 with the latest Google Play billing and security requirements
•Smoother, more reliable purchase flow with automatic reconnection
•Improved display on devices with notches and gesture navigation
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