Apps by Bo Kalvslund
Trigonometry Pro app icon

Education

Trigonometry Pro

Bo Kalvslund

$0.99 In-app purchases
Open on Apple

About this app

Trigonometry Pro is the essential toolkit for students, engineers, and anyone who works with triangles and angles. Solve any triangle — instantly Enter any two known values and let the app calculate the rest. Whether you know two sides, one side and an angle, or any other combination, Trigonometry Pro finds the complete solution. Right Triangle Calculator • Solve using any two known values: sides (a, b, c) or angles (α, β) • Uses sine, cosine, tangent, and the Pythagorean theorem • Clearly shows which formula was applied **General Triangle Calculator** • Supports all cases: SAS, ASA, SSA, AAS, and SSS • Uses the Law of Sines and the Law of Cosines • Automatically detects and handles the SSA ambiguous case — shows both solutions when two valid triangles exist Theory & Learning • Animated Pythagorean proof — watch a² + b² = c² come to life step by step • Interactive unit circle — explore sine, cosine, and tangent at any angle • Right triangle reference with all key formulas Settings • Works in degrees or radians — switch instantly in Settings • Adjustable decimal precision (2–6 places) • Calculation history to review your recent work • Share results directly from the app Trigonometry Pro is built for iOS 26 with a pure SwiftUI interface and beautiful Liquid Glass design - Powerful, elegant trigonometry.

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Aug 31, 2026 · 0 ratings Aug 31, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current $0.99
Historical low USD 0.99
Paid → free 0×
Price history
Current $0.99
$0.99 $0.50 Free Aug 31, 2026 · $0.99 Aug 31, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Aug 31, 2026 · 9:16 PM $0.99

Screenshots

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