Apps by Armchair Engineering
Trigonometry Help Lite app icon

Education

Trigonometry Help Lite

Armchair Engineering

Free download 4.70 · 14 storefronts · 2,521 ratings In-app purchases
Open on Apple

About this app

Trig Help is a simple triangle calculator that enables you to quickly and easily find unknown angles & sides of any right-angled triangle. Features Include: - Accurately solve right-angled triangles - Workings view, so you can see the math behind the solutions (requires optional upgrade) - View a scale drawing of your solved triangle - View a handy set of basic trig formulae - Enter angles in radians, decimal degrees or degrees, minutes, seconds - Select your preferred number of decimal places What two App Store reviewers had to say about Trig Help: "I could never remember those simple formulas. I always had to dig out my text books from MANY YEARS ago to refresh my memory. THIS LITTLE APP IS A DELIGHT TO USE! I love it! Even my engineer friends are impressed. THANKS!" 5 Stars "Easy to use and accurate with high degree of precision. Would recommend to any toolmaker." 5 Stars Also available for macOS on the Mac App Store.

Latest release

What’s New

Version 4.0.6 Dec 6, 2019

- Bug fixes

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +1
US rating-count history
767 ratings
767 766 766 Aug 7, 2026 · 766 ratings Aug 9, 2026 · 767 ratings Aug 7, 2026 Aug 9, 2026

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 Free
Historical low Free
Paid → free
Price history
Current Free
Free Aug 7, 2026 · Free Aug 12, 2026 · Free Aug 7, 2026 Aug 12, 2026
  1. First observed Aug 7, 2026 · 10:43 PM Free

Screenshots

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