Trigonometry calc vs Trigonometry Help Lite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trigonometry calc
Calculate side lengths and angles in right-angled triangles using Pythagorean theorem and trigonometry functions. Learn basic trigonometry concepts. An optional premium version removes ads and unlocks a general triangle calculator.
- Calculate side lengths
- Calculate angles
- Pythagorean Theorem
- Trigonometry functions
- Learn simple trigonometry
- General triangle calculator (premium)
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Use Trigonometry Calc to calculate sidelengths and angles in the right angled triangle. By the help of Pythagorean Theorem and some trigonometry functions you can in this app calculate side lengths and angles in any right angled triangle. Learn simple trigonometry. •Math •Trigonometry •Pythagorean Theorem Trigonometry Premium Go ad-free forever and unlock the advanced General Triangle Calculator (SAS/SSA/ASA). Solve any triangle, not just right triangles
Trigonometry Help Lite
This app quickly calculates unknown angles and sides of right-angled triangles. It offers a workings view for detailed solutions, scale drawings, and a formula reference. Input angles in various formats and customize decimal precision.
- Solve right-angled triangles
- View detailed math workings
- Scale drawing of solved triangle
- Basic trig formulae reference
- Multiple angle input formats
- Customizable decimal places
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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.
Screenshots
Verdict
The clearest difference is review sentiment: Trigonometry Help Lite at 88% against Trigonometry calc's 0%. Trigonometry Help Lite also leads on rating (4.7 vs 3.0) and ads (none vs shown). On price, update cadence, in-app purchases and monetization model 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
Both are free to download. Trigonometry calc sells 1 one-off in-app purchase and Trigonometry Help Lite sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Trigonometry Help Lite holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Trigonometry Help Lite has 768 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Trigonometry calc's written reviews are positive against 88% of Trigonometry Help Lite's.
Trigonometry calc ships an update every 3 months, Trigonometry Help Lite every 6 weeks. The most recent releases landed on September 6, 2026 and September 26, 2026 respectively.
| Parameter | Trigonometry calc | Trigonometry Help Lite |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 4.7 (768 ratings) — better |
| Positive reviews | 0.0% of reviews | 87.5% of reviews — better |
| Number of ratings | 2 | 768 — better |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Bo Kalvslund | Armchair Engineering |
Customer experience
Trigonometry calc
Trigonometry Help Lite
Bugs and requests
Trigonometry calc
Not enough reviews yet to summarise bugs or requests.
Trigonometry Help Lite
Reported bugs
1 issue- Incorrect calculation results in some cases
Requested features
4 requests- Better visual representation of triangles
- Clearer explanation of premium features
- Higher default decimal place precision
- More detailed feature descriptions for paid tiers
In-app purchases
Trigonometry calc
- Premium$0.99
Trigonometry Help Lite
- Trig Help Premium$2.99
- Trig Help Premium$3.99
- Trig Help Premium$5.99
Questions
Is Trigonometry calc free?
Is Trigonometry Help Lite free?
Which has better reviews, Trigonometry calc or Trigonometry Help Lite?
Do Trigonometry calc or Trigonometry Help Lite have ads?
Which is updated more often, Trigonometry calc or Trigonometry Help Lite?
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