WHAT'S NEW IN 1.1.5 - Links now open directly in the app: tap any zerodeficitccrnprep.com link (including www links) from email, messages, or search results and land exactly where you need to be, no browser detour. - Smoother sign-in: saved passwords from iCloud Keychain now autofill more reliably. - Behind-the-scenes reliability improvements for a faster, more stable study session. WHY NURSES CHOOSE ZERO DEFICIT Zero Deficit is CCRN prep built the way critical care nurses actually study: focused, evidence-based, and zero fluff. EXAM-STYLE PRACTICE THAT MIRRORS THE REAL TEST - 695+ CCRN-style questions written to the current AACN exam blueprint - Detailed rationales on every question, so you understand the why, not just the what - Full-length timed practice tests to build exam-day stamina - Topic-by-topic quizzes across Cardiovascular, Pulmonary, Endocrine, Hematology, Neurology, GI, Renal, Multisystem, and Professional Caring and Ethical Practice STUDY TOOLS THAT KEEP YOU CONSISTENT - Daily Question: one high-yield question every day to keep your streak alive - Streak tracking and milestone celebrations that make consistency automatic - Smart progress tracking shows your strongest and weakest systems at a glance - Study reminders so a busy shift schedule never derails your prep REFERENCE WHEN YOU NEED IT - Concise, ICU-focused study guides you can review between patients - Clear breakdowns of hemodynamics, ventilation, ABGs, drips, and more BUILT FOR REAL LIFE IN THE ICU - Clean, fast interface designed for quick study sessions on breaks - Your progress syncs securely to your account - Night-shift friendly: study anywhere, anytime Whether you are months out or cramming your final week, Zero Deficit meets you where you are and gets you to exam day with confidence - and zero knowledge deficits. Start your 3-day free trial and see why critical care nurses are making Zero Deficit their CCRN study partner. Questions or feedback? We read everything: support@zerodeficitccrnprep.com

> **1.1.4 — Fresher on launch.** Fixed an issue where the app briefly > showed a previous version's layout on cold launch. New content and > screen redesigns now appear immediately on the first open after an > update.

Build 17 / Version 1.1.3 fixes the rare "Connection Error" issue that some users hit after relaunching the app. What changed: • Smarter retry on failed loads. The app now silently re-tries the network three times with growing back-off before showing any error. • Deeper cache clearing on retry. If a previous launch left the app's local web cache or Service Worker in a corrupted state, the new retry path automatically wipes that storage and reloads cleanly — without needing to uninstall the app. • New "Reset App Data" recovery button. If you ever do get the connection screen, tap Reset App Data for an in-app one-shot recovery that's equivalent to deleting and reinstalling — but faster, and you stay in the app. • Live-network awareness. The app now uses the device's built-in network monitor to detect when you regain connectivity and auto-retries the load — no need to back out and reopen. • Inline reconnect banner instead of a full-screen error. While the app is retrying, you'll see a small banner at the top with progress; the screen stays clean. Why we shipped it: A small group of users reported the app showing "Unable to connect" even after relaunching, even with a working internet connection. The root cause was a corrupted WKWebView cache or Service Worker registration left over from a previous launch — these survive a normal reload but get wiped on app deletion. Build 17 clears those automatically, permanently fixing the issue. No new permissions, no new in-app purchases, no design changes — just a more resilient connection layer and a fast recovery path if anything ever does go wrong. Thank you to every CCRN candidate who reported this. Your feedback shipped this fix.

This is a reliability-focused update built around the moments that matter most for CCRN nurses studying on the go — when your WiFi drops mid-flashcard, when you switch from hospital to home network, or when you need to resume Premium access on a new device. What's improved: Smoother reconnection on weak networks The app used to throw a "Connection Error" the instant a request stalled. Now it silently retries up to 3 times in the background with a subtle "Reconnecting…" indicator. Most users on flaky WiFi or low cellular signal will never see an error again. Retry button that actually works If a connection error does appear, tapping Retry now performs a true fresh request — it stops any stuck request, bypasses cached failures, and gives you a clean attempt. No more tapping Retry only to see the same error reappear seconds later. Auto-recovery when your WiFi comes back If you're stuck on the Connection Error screen and your network reconnects, the error dismisses itself and the app loads automatically. No need to tap anything. Restore Purchases properly resyncs Fixed a bug where some Premium subscribers saw "No previous purchases found" even though they had an active subscription. The app now refreshes your StoreKit receipt before checking entitlements, so Restore Purchases reliably brings back your access. Better deep-linking Links tapped from Pinterest, Safari, push notifications, or other apps now correctly survive the retry process — you land where you intended, not on the homepage. Smarter "No Internet Connection" message When your device is truly offline (no WiFi and no cellular), you'll see a clearer message explaining what's going on instead of watching the app churn through pointless retries. Thanks for studying with Zero Deficit. Pass that CCRN. Both clean, no emojis, no special characters that App Store Connect will reject. Ready to paste.

Zero Deficit v1.1.1 — Built for the Final Stretch This update is laser-focused on the parts of CCRN prep that quietly matter most: keeping your study streak honest, making your printouts look like real exam material, and giving you cleaner content pages when you need to focus. STREAK SYSTEM REBUILT FROM THE GROUND UP We heard you loud and clear. The bug where your streak got stuck at 1 day is fixed for good. Streaks now compute correctly based on your real study activity — every login, every practice quiz, every flashcard review counts toward keeping that fire alive. New "Streak at Risk" banner appears on your dashboard the moment your streak is about to break tonight. One-tap shortcuts to a 5-minute quiz or a quick study guide review let you save your streak in under 60 seconds. No more lost progress because of a busy ICU shift. A new daily heartbeat ping in the background keeps your streak active even on days you're just reviewing notes — so opening the app counts. PRINT LIKE A PRO — CLEAN PDFs WITH BRANDED WATERMARK Print any study guide directly from your iPhone as a beautifully formatted, text-searchable PDF. Perfect for reviewing on planes, in break rooms, or annotating with a pen during long shifts. Every printed page now has a centered Zero Deficit logo watermark behind the text, so your handouts look professional whether you're studying solo or sharing with unit colleagues. Page headers and footers include the URL and page numbers, keeping every photocopy branded back to your study system. We also fixed the print layout so content starts at the top of page 1 (no more wasted whitespace) and topic titles never get orphaned at page bottoms. EIGHT NEW BODY-SYSTEM STUDY GUIDES + PRACTICE TESTS This release ships dedicated hub pages for every body system on the AACN CCRN exam blueprint: — Cardiovascular (15% of exam) — Pulmonary (15%) — Endocrine, Hematology, GI, Renal, Integumentary, Musculoskeletal (combined 19%) — Neurological (12%) — Multisystem (14%) — Behavioral, Psychosocial (4%) — Plus the Professional Caring & Ethical Practice domain (20%) Each system has its own 10-question sample practice test you can take instantly to gauge where you stand, no subscription required. THREE NEW DEEP-DIVE TOPIC PAGES — Shock & Vasopressors: norepi vs epi vs vaso vs phenyl, drip math, escalation logic — Vasoactive Medications & Receptors: alpha/beta/dopamine receptor effects, side-by-side comparison — Sepsis Management: surviving sepsis bundles, septic shock pathway, lab triggers INSTANT PAGE LOADS We rewrote our content delivery for these new pages so they render in under 200ms even on slow LTE — perfect for studying between patient assessments. BUILT BY NURSES, FOR NURSES Zero Deficit is the only CCRN prep app made by critical care nurses who passed on their first try. Every feature in this update came from real feedback during the most stressful part of exam prep — the final 30 days. We don't just write content; we lived through 12-hour ICU shifts followed by 2-hour study sessions and built what we wished existed. WHAT HASN'T CHANGED: — 695+ adaptive practice questions — AI question generator powered by Gemini 2.5 — Realistic 150-question final exam simulations with timer + scoring — Audio reviews for hands-free study during commutes — Daily Challenge mode — Offline-first study guides — No-ads guarantee COMING SOON: — "Frozen Streak" — 1 free skip-day per week so one bad shift doesn't reset your progress — Personalized AI study plans based on your weakest body systems — Apple Watch quick-quiz complication Thank you to the nurses who beta-tested this build. If you find a bug or want to request a feature, email zerodeficitccrnprep@gmail.com — we read every single message and ship fixes within 48 hours. Pass the CCRN. Save lives. We're rooting for you. — The Zero Deficit Team

We've made Zero Deficit faster, cleaner, and more powerful than ever. Here's what's new: CLEANER NATIVE EXPERIENCE • Removed the top header bar for a seamless, modern look. Your status bar now blends perfectly into the app — just like the native apps you love. • More screen real estate for studying. Content flows naturally from edge to edge. • Bottom navigation is now your primary way to move through the app — simple, intuitive, and always accessible. IMPROVED STUDY BY TOPIC • Action buttons (Take Quiz, Flowchart, ABG Interpreter, Rhythm ID) are now stacked neatly below each topic title instead of overflowing off-screen. • Bookmark and expand controls stay visible and accessible on every device size. • Cleaner card layout that works perfectly on all screen sizes. AI QUESTION GENERATOR UPGRADE • Upgraded to Gemini 2.5 Flash — our AI question generator is now faster and produces even more clinically accurate CCRN practice questions. • Generate unlimited custom questions on any topic, any difficulty level. STRIPE CHECKOUT FIX • Fixed an issue where some users couldn't complete purchases on the website. All three plans (Monthly, Annual, Lifetime) now process correctly. • Added promo code support at checkout — enter a code before purchasing to get your discount applied automatically. PROMOTIONAL OFFERS • New promo code system! Enter a valid code on the subscription page to unlock exclusive discounts on Annual and Lifetime plans. • Promotional pricing is handled natively on each platform — Apple App Store offer codes, Google Play offers, and Stripe promo codes on web all work seamlessly. SEO & DISCOVERABILITY • Added 3 new in-depth study resources: CCRN Practice Questions guide, 12-Week Study Plan, and Hemodynamic Monitoring guide — all accessible from the app footer. • These resources are packed with sample questions, study schedules, normal values, and clinical scenarios to supplement your prep. PERFORMANCE & STABILITY • Improved bottom navigation padding on Android devices with gesture navigation or software buttons. • Fixed edge-to-edge display compliance for Android 15. • Enhanced purchase flow reliability across all platforms. • Various under-the-hood improvements for faster page loads and smoother transitions. Thank you for studying with Zero Deficit. Every update is built with one goal: helping you pass the CCRN on your first attempt. Keep going — you've got this.

Deep Links & App Links We've added full Universal Links support so tapping any zerodeficitccrnprep.com link will open directly in the app instead of Safari. No more copying URLs or losing your place — shared study links, notifications, and bookmarks now launch seamlessly into the exact screen you need. This works whether the app is already open or completely closed. AI Question Generator Upgrade The AI-powered CCRN question engine now connects to Gemini 2.0 Flash for faster, more clinically accurate scenario-based questions. Each question includes detailed vital signs, lab values, and waveform data when applicable, with thorough rationales explaining why each distractor is wrong — not just why the correct answer is right. Push Notification Reliability We've rebuilt the push notification system from the ground up with a unified device token architecture. If you use multiple devices or platforms, your notification preferences now sync correctly across all of them. Streak warning notifications are more reliable, with personalized messages based on your current streak length. Privacy Manifest Added Apple's required Privacy Manifest (PrivacyInfo.xcprivacy) declaring exactly what data the app collects and why. We collect device identifiers for push notifications, email for account login, and purchase history for subscription management — nothing more. No tracking. No third-party data sharing. Performance & Stability Cleaned up over 20 legacy files, fixed undefined variable references, improved error handling throughout the app, and resolved a database duplicate key issue that could occasionally cause notification registration to fail. The app launches faster and runs more smoothly across all supported devices. Security Improvements Removed all hardcoded test credentials from the codebase, enforced environment-variable-only configuration for all API keys and secrets, and ensured dynamic URL resolution for authentication redirects. Your data stays safe.

Version 1.0.8 brings exciting improvements to enhance your CCRN exam preparation experience: IMPROVED APP LAUNCH EXPERIENCE • Beautiful new animated EKG heartbeat loading screen • Seamless transition from launch to dashboard • Faster app startup performance ENHANCED PUSH NOTIFICATIONS • Improved notification reliability for study reminders • Better streak warning alerts to keep you on track • Fixed notification permission flow for smoother setup • Tap notifications in Profile to manage settings directly in iOS PERFORMANCE OPTIMIZATIONS • Faster quiz loading times • Reduced app size for quicker downloads • Optimized memory usage during study sessions • Improved database synchronization STUDY FEATURES • Daily streak tracking to build consistent study habits • Spaced repetition flashcards for better retention • Comprehensive practice quizzes across all body systems • Detailed analytics to identify weak areas BUG FIXES & STABILITY • Fixed progress saving during quiz sessions • Improved auto-save every 5 questions • Enhanced error handling throughout the app • General stability improvements Thank you for choosing Zero Deficit CCRN Prep for your certification journey. We're committed to helping you pass your CCRN exam with confidence. Keep studying, maintain your streak, and achieve your nursing career goals! Questions or feedback? Contact us at zerodeficitccrnprep@gmail.com

• Push notification reminders to keep your study streak alive • Improved subscription management with easier navigation • Enhanced print functionality for study guides • Performance improvements and bug fixes

- New: Native IOS experience with smooth animations - New: onboarding flow - New: redesigned dashboard - Improved: Category Mastery visualization - Improved: Performance and stability updates