Lesson Complete vs Zero Deficit

Lesson Complete is the all-in-one app for music teachers and the students they teach. Built for working musicians, traveling teachers, and the schools that hire them — every screen designed for the way music lessons actually happen. FOR TEACHERS • Today: see every lesson in one place. Tap to start, mark complete, log notes. • Calendar: drag to reschedule, swipe between weeks, switch between Day, Week, and Month with one tap. • Students: full roster with instrument, age, and status. Private notes only you see, auto-saved as you type. • In-Lesson Mode: open Pieces, Files, Lesson Logs, Practice History, and Profile without leaving the lesson. • Practice Tools: a metronome that keeps clicking when the screen locks, plus a tuner and practice timer. • Files & Music Library: stream PDFs of any score. Share files or whole folders with a student in one tap. • Driving Today: ETAs to every stop on today's route, computed on device, with one-tap Apple Maps. • Driving History: log trips for tax season and export a clean CSV. • Live Activities show your next lesson on the Lock Screen. • Face ID / Touch ID unlock keeps your roster private. FOR STUDENTS & FAMILIES • Today: today's lesson, this week's assignments, and recent practice at a glance. • Practice Logger: log time and pieces, and watch your weekly practice bar build up. • Pieces: every assigned piece with score, reference recording, and your teacher's notes. • Materials: every file your teacher has shared, organized by folder. • Messages: secure messaging with your teacher. • Billing: invoices and autopay, handled in seconds. BUILT TO BE TRUSTED • Your school's data never crosses tenant lines. • File downloads use short-lived signed links, never raw cloud URLs. • No tracking, and no third-party ad SDKs. A SUBSCRIPTION ON THE WEB UNLOCKS THE APP Lesson Complete on iOS pairs with your studio's existing Lesson Complete subscription on the web. Sign in with the same email and you're in. There are no purchases inside the app. Built by music teachers, for music teachers.

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.