Prepare for your CCRN exam with a comprehensive study tool built by an ICU nurse. It offers over 695 practice questions with detailed rationales, AI-powered personalization, smart flashcards, and full-length simulation exams to identify and address knowledge gaps.
1.1.7
September 4, 2026
Version 1.1.7 — better on iPad, steadier on hospital Wi-Fi • Refreshed iPad experience — study guides, flowcharts, and the exam simulator make full use of the larger screen • Smarter reconnection — if your connection drops mid-session (hospital Wi-Fi, we're looking at you), the app now reconnects automatically in the background and picks up where you left off • Clearer connection messages — you'll be told when Wi-Fi is connected but has no internet, so you know to switch to cellular instead of guessing • Performance and reliability improvements throughout Still here for you between shifts: • 695+ CCRN practice questions with detailed rationales, mapped to the AACN blueprint • 77-drug ICU medication reference and clinical flowcharts for shock, ABGs, and rhythms • Full-length timed exam simulation with per-topic scoring • Progress tracking, streaks, and a new question every day All 8 body-system study guides are free, and every new account starts a 3-day full-access trial. Written by ICU nurses who passed the CCRN. Questions or feedback? support@zerodeficitccrnprep.com — a real nurse reads every message.
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The short name for Zero Deficit CriticalCare Prep is Zero Deficit.
Zero Deficit provides over 695 practice questions with detailed rationales, AI-powered study personalization, smart flashcards using spaced repetition, and full-length simulation exams to help you master critical care concepts and identify weak areas.
Yes, Zero Deficit offers a 72-hour full access free trial with unlimited access to all features, including practice questions, flashcards, study guides, and AI features. No credit card is required to start the trial.
Zero Deficit offers a monthly subscription for $14.99 with a 3-day free trial, and an annual subscription for $84.99. These plans provide continued access to the premium features after the initial trial period.
The AI in Zero Deficit analyzes your performance in real-time to identify specific knowledge gaps. It then generates custom study guides and targeted question sets to help you focus on areas where you need the most improvement, such as hemodynamics or neurology.
Yes, Zero Deficit contains advertisements. While it offers a free trial and in-app purchases for subscriptions, users should expect to encounter ads within the application.
Zero Deficit is available on iPhone, iPad, and iPod devices. It is designed to support iOS operating systems.
The latest version of Zero Deficit is 1.1.3, and it was last updated on May 27, 2026. This indicates a recent update, suggesting the app is actively maintained.
