Comparison

Trigonometric vs RadarPlot

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

Head to head
About

Trigonometric

Features
Read full description

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.

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 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 target’s 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

Trigonometric4 screens
RadarPlot4 screens

Verdict

The call

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. RadarPlot sells 1 one-off in-app purchase. Trigonometric asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on September 18, 2026 and October 5, 2026 respectively.

Scorecard2 real differences Β· 4 level
Trigonometric versus RadarPlot: the parameters behind the verdict, then further details
ParameterTrigonometricRadarPlot
PriceFreeFree
Update frequencyEvery 4 monthsEvery 4 months
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPod β€” betteriPhone, iPod
Requires iOS8.1 β€” better15.1
Further details β€” not scored
Size1 MB58 MB
Age rating4+4+
Developerhirenkumar patelPaulina Praciak

In-app purchases

None

Trigonometric

No in-app purchases

1 purchases

RadarPlot

One-time1
  • Lifetime Access$14.99

Questions

Is Trigonometric free?
Trigonometric is free to download, with no in-app purchases.
Is RadarPlot free?
RadarPlot is free to download, with in-app purchases available.
Do Trigonometric or RadarPlot have ads?
Neither Trigonometric nor RadarPlot shows ads.
Which is updated more often, Trigonometric or RadarPlot?
Trigonometric ships an update every 4 months, and RadarPlot every 4 months. Most recently, Trigonometric was updated on September 18, 2026 and RadarPlot on October 5, 2026.

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