Comparison

RadarPlot vs Navitime Marine

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RadarPlot

Features
Read 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.

About

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.

Highlights
  • 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
Features
Read 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

RadarPlot4 screens
Navitime Marine4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
RadarPlot versus Navitime Marine: the parameters behind the verdict, then further details
ParameterRadarPlotNavitime Marine
PriceFreeFree
Rating—4.8 (5 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—5 — better
Update frequencyEvery 4 monthsEvery 4 days — better
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size58 MB67 MB
Age rating4+4+
DeveloperPaulina PraciakKhalid Alyafei

In-app purchases

1 purchases

RadarPlot

One-time1
  • Lifetime Access$14.99
2 purchases

Navitime Marine

Subscriptions2
  • Navitime Pro Monthly2 variants$4.991 Month
  • Navitime Pro Annual3 Days trial2 variants$49.991 Year

Questions

Is RadarPlot free?
RadarPlot is free to download, with in-app purchases available.
Is Navitime Marine free?
Navitime Marine is free to download, with in-app purchases available.
Do RadarPlot or Navitime Marine have ads?
Navitime Marine shows ads; RadarPlot does not.
Which is updated more often, RadarPlot or Navitime Marine?
RadarPlot ships an update every 4 months, and Navitime Marine every 4 days. Most recently, RadarPlot was updated on October 31, 2026 and Navitime Marine on November 10, 2026.

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