RadarPlot vs Navitime Marine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RadarPlot
Read full descriptionHide full description
Master radar plotting through practical, interactive exercises. RadarPlot is a professional training tool for maritime cadets, deck officers and navigators learning the 6-minute plotting method, relative motion, CPA calculations and collision-avoidance maneuvers. PRACTICE RADAR PLOTTING • Record target range and bearing observations • Plot multiple radar targets • Use a North-Up stabilized radar display • Adjust plotting intervals and range scales • Zoom and pan without affecting calculations CALCULATE CPA AND TARGET MOTION • Automatically construct the Relative Motion Line • Calculate CPA, TCPA and relative speed • Determine the target’s true course and speed • Visualize own-ship and target-motion vectors • Practice the standard 6-minute plotting method PLAN COLLISION-AVOIDANCE MANEUVERS • Set a required minimum passing distance • Calculate course-only and speed-only solutions • Select the maneuver execution point • Display the Advanced Relative Motion Line • Compare alternative maneuvering decisions BUILT FOR MARITIME TRAINING Use built-in scenarios and answer-reveal tools to learn step by step or practise independently. Ideal for maritime academy students, deck officers preparing for examinations, navigators refreshing manual plotting skills and instructors demonstrating relative-motion geometry. Train smarter. Understand the plot. Make safer decisions.
Navitime Marine
This app offers comprehensive study materials, interactive quizzes, and essential navigation tools for maritime professionals and students. It covers COLREGS, navigation techniques, and includes AI-powered tutoring for exam preparation. Enjoy offline access to all content and features.
- COLREGS Rules study (English/Arabic)
- Navigation lights, shapes, and signals
- Advanced Navigation library
- AI COLREGS tutor
- Category-based and mock exams
- GPS Radar with AIS traffic
- Chart Plotter practice
Read full descriptionHide full description
Navitime is the complete study, navigation and exam-prep companion for maritime Rules of the Road (COLREGS / IRPCS) — built for deck officers, cadets, sailors, and anyone preparing for a navigation exam. STUDY • Full COLREGS Rules 1–41 + Annexes, bilingual English/Arabic • Navigation lights, shapes, sound signals and flags with visual diagrams • Advanced Navigation library — 8 books, 57 chapters, with rich diagrams, worked examples and image zoom (Position & Charts, Celestial Navigation, The Instrumented Bridge, Handling the Ship, Maritime Regulations, Weather & Water, Blind Pilotage, and the core Navigation Handbook) • Naval Formations reference — 17 tactical formation topics • AI COLREGS tutor — ask any Rules of the Road question and get an instant explanation, with recommended quiz categories and study sections QUIZ • Category-based quizzes across every COLREGS topic • Timed quiz mode and a full Mock Exam covering all categories (Pro) • Flashcard study mode (Pro) • Weak-areas mode — drills the questions you get wrong most • Detailed per-answer explanations, quiz history and progress tracking NAVIGATION TOOLS • GPS Radar — live nearby vessel (AIS) and aircraft traffic on a radar display, with a combined distance-sorted traffic list • GNSS Scan Tool — satellite constellation status and interference map • Chart Plotter — dead reckoning and fix chartwork practice • VHF radio channel directory by country/port • Beaufort & Douglas sea-state scales with live marine conditions • Sun & Moon and Tide tools, with a \"show the working\" calculation mode • Morse code converter and unit converter 100% OFFLINE All study content, the rule book, and every quiz work with no internet connection. Progress, bookmarks, and history are saved locally on your device. DESIGNED FOR EVERYONE • Full bilingual English/Arabic support with right-to-left layout • Dark and light theme, switchable anytime • No account required FREE FOR EVERYONE Every feature is fully unlocked with no account required. GROUP CHALLENGES Host or join a live group quiz session with friends or colleagues. (Requires internet.) Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: RadarPlot at none against Navitime Marine's shown. Navitime Marine's advantage is update cadence (every 4 days vs every 4 months). On price, in-app purchases, device support and iOS requirement 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. RadarPlot sells 1 one-off in-app purchase and Navitime Marine sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
RadarPlot ships an update every 4 months, Navitime Marine every 4 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.
| Parameter | RadarPlot | Navitime Marine |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (5 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 58 MB | 67 MB |
| Age rating | 4+ | 4+ |
| Developer | Paulina Praciak | Khalid Alyafei |
In-app purchases
RadarPlot
- Lifetime Access$14.99
Navitime Marine
- Navitime Pro Monthly2 variants$4.991 Month
- Navitime Pro Annual3 Days trial2 variants$49.991 Year









