Prepare for USCG COLREG and OOD exams with a comprehensive study system. Features AI tutoring, interactive 3D visuals for lights and shapes, and a complete question bank with intelligent test modes and progress tracking.
1.2.2
March 19, 2026
What is New Spaced Repetition (SM-2) - Neptune now schedules reviews based on your performance, surfacing weak topics more frequently Progress Dashboard - New mastery rings card showing your status across Rules, Lights, and Verbatim at a glance Mixed Daily Challenge - Daily sessions now combine COLREGs rules, verbatim recall, and vessel light questions Multi-Diagram Swipe Viewer - Questions can display multiple diagrams; swipe through them full-screen Unified Test Summary - Consistent end-of-session summary screen across all quiz types with per-topic breakdown Resume Verbatim Sessions - Pick up in-progress verbatim tests where you left off Flag Questions - Flag any question or rule during a session to review later New Vessel Lights - Added 12m and 7m power-driven vessel configurations; hull display enabled in the night viewer New Achievements - Verbatim Master and Night ID badges now trackable Study Walkthrough - Guided onboarding flow for new users UI Improvements - Redesigned picker sheets, smoother scroll behavior, better icons throughout Bug Fixes - Fixed stale question citation rows persisting after an app update - Fixed progress data not rebuilding correctly after deleting a session - Fixed sync errors caused by missing SM-2 columns on older installs - Fixed progress history not backfilling from older test sessions after sync - Fixed date normalization inconsistencies in the sync service - Fixed inline answer feedback incorrectly appearing in non fill-in exercises - Fixed null safety crashes across several study and progress screens - Fixed diagram colors and references loading incorrectly in the rule detail view
MoreNeptune uses a multi-faceted approach including AI-powered explanations for understanding rules, interactive 3D models for visual learning of lights and shapes, and a verbatim memory trainer for rote memorization of key phrases. It also provides access to the official USCG question bank with smart citation.
Neptune offers advanced progress tracking with confidence scores for each Rule, heat maps to identify weak areas like 'Steering & Sailing,' and a detailed history to monitor improvement over time. This helps users focus their study efforts effectively.
Yes, Neptune is designed to be offline ready, allowing users to study in locations without internet access, such as underway or in secure facilities. This ensures consistent study regardless of connectivity.
Neptune is available for iPhone, iPad, and iPod, with cloud sync functionality allowing users to start their study on one device and continue on another. This provides flexibility in study locations and times.
Yes, Neptune is designed for a range of users, from Ensigns preparing for OOD Phase 1 to Captains refreshing for renewals. It covers both Inland and International questions from the official USCG question bank.
The latest version of Neptune is 1.2.2, and it was last updated on March 19, 2026. This indicates a commitment to providing current and reliable study material.
Neptune has an age rating of 4+, making it appropriate for a wide range of users. The app focuses on educational content for maritime professionals.
While Neptune provides comprehensive preparation for USCG exams, the app itself does not directly offer certifications. Its purpose is to equip users with the knowledge and confidence to pass official USCG examinations.
