Trigonometric vs RadarPlot
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Trigonometric
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Trigonometric App is gives you easy understanding the concept of trigonometric basics. App is useful to find out how to convert from Radian to Degree and Vice a Versa.
RadarPlot
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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 β’ Record target range and bearing observations β’ Plot multiple radar targets β’ Use a North-Up stabilized radar display β’ Adjust plotting intervals and range scales β’ Zoom and pan without affecting calculations CALCULATE CPA AND TARGET MOTION β’ Automatically construct the Relative Motion Line β’ Calculate CPA, TCPA and relative speed β’ Determine the targetβs true course and speed β’ Visualize own-ship and target-motion vectors β’ Practice the standard 6-minute plotting method PLAN COLLISION-AVOIDANCE MANEUVERS β’ Set a required minimum passing distance β’ Calculate course-only and speed-only solutions β’ Select the maneuver execution point β’ Display the Advanced Relative Motion Line β’ 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.
Screenshots
Verdict
The clearest difference is in-app purchases: Trigonometric at none against RadarPlot's 1. Trigonometric also leads on iOS requirement (8.1 vs 15.1). On price, update cadence, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. RadarPlot sells 1 one-off in-app purchase. Trigonometric asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on September 18, 2026 and October 5, 2026 respectively.
| Parameter | Trigonometric | RadarPlot |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone, iPod |
| Requires iOS | 8.1 β better | 15.1 |
| Further details β not scored | ||
| Size | 1 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | hirenkumar patel | Paulina Praciak |
In-app purchases
Trigonometric
No in-app purchases
RadarPlot
- Lifetime Access$14.99
Questions
Is Trigonometric free?
Is RadarPlot free?
Do Trigonometric or RadarPlot have ads?
Which is updated more often, Trigonometric or RadarPlot?
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