NeuronNotes vs Zero Deficit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NeuronNotes
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AI-Powered Note Generation: Automatically convert lectures, YouTube URLs, PDFs, websites, audio, and video files into clear, well-organized notes. Spend less time writing and more time understanding. - Flashcards on-the-go: Instantly create flashcards from your notes, making it easier than ever to review key concepts and memorize important details. - Interactive practice tests on-demand: Test your knowledge with AI-generated quizzes that help reinforce learning and prepare you for exams. - NeuronNotes are alternative to Turbolearn, Wave AI, Mindgrasp and Raena. # SUBSCRIPTIONS AND AUTOMATIC RENEWAL • Subscription required to access premium features • Your subscription includes access to the features listed above. • The payment will be charged to your Apple ID Account at confirmation of purchase. • The subscription renews automatically unless the auto-renew is turned off at least 24 hours before the end of the current billing period. • Your account will be charged for renewal within 24 hours before the end of your selected subscription. • Your subscriptions can be managed, and auto-renewal can be turned off by going to your App Store Account Settings. # LEGAL • Terms of Service: https://sites.google.com/view/neuronnotes/home • Privacy Policy: https://sites.google.com/view/neuronnotes/term-conditions
Zero Deficit
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.
- 695+ high-yield practice questions
- Detailed rationales for every question
- AI-powered personalized study guides
- 190+ smart flashcards with spaced repetition
- Full-length simulation exams
- Detailed performance analytics
- Exclusive cheat sheets
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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 (auto-renewable subscription or one-time lifetime purchase) 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.
Screenshots
Verdict
The clearest difference is iOS requirement: Zero Deficit at 15.0 against NeuronNotes's 17.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. NeuronNotes sells 2 in-app purchases, starting at $8.99 per month and Zero Deficit sells 3 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | NeuronNotes | Zero Deficit |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 3 MB |
| Age rating | 12+ | 12+ |
| Developer | Ahmad Adli Azhar | ZERO DEFICIT LLC |
In-app purchases
NeuronNotes
- Monthly$8.991 Month
- Yearly$49.991 Year
Zero Deficit
- Zero Deficit CCRN PREP MONTHLY3 Days trial$14.991 Month
- Zero Deficit CCRNPrep PremiumAnnual$84.991 Year
- Zero Deficit CCRN Prep Lifetime$199.99





