Trigonometry! vs Trigonometry calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trigonometry!
Master trigonometry with this comprehensive mobile helper. It offers a textbook, visual explanations, and video lessons covering all essential formulas and theorems. Prepare for your exams with detailed content and easy-to-understand explanations.
- Ordered set of basic formulas and theorems
- 172 video lessons
- Easy-to-read and understand textbook
- Covers major trigonometry topics
- Visual explanations
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Are your trigonometry exam at the corner? Our app will rescue you! "Trigonometry" is your personal helper that provides you with all information required. Can you just imagine that with the help of one mobile app you can easily learn trig reviewing the textbook provided, observing visual explanations and watching video lessons?! Downloading our app you get: ▶ FORMULAS • Ordered set of basic formulas and theorems that can only be applied in the frameworks of this course • Needed comments and explanations are given ▶ 172 VIDEO LESSONS ▶ TEXTBOOK • It covers major topics • Textbook is easy-to-read and easy-to-understand • The book divided into: - Right Triangle Trigonometry - Angles - Trigonometric Functions of an Acute Angle - Applications and Solving Right Triangles - Trigonometric Functions of Any Angle - Rotations and Reflections of Angles - General Triangles - The Law of Sines - The Law of Cosines - The Law of Tangents - The Area of a Triangle - Circumscribed and Inscribed Circles - Identities - Trigonometric Identities - Sum and Difference Formulas - Double-Angle and Half-Angle Formulas - Other Identities - Radian Measure - Radians and Degrees - Arc Length - Area of a Sector - Circular Motion: Linear and Angular Speed - Graphing and Inverse Functions - Graphing the Trigonometric Functions - Properties of Graphs of Trigonometric Functions - Inverse Trigonometric Functions - Solving Trigonometric Equations - Numerical Methods in Trigonometry - Complex Numbers - Polar Coordinates Stop being scared, download "Trigonometry"!
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
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Verdict
The clearest difference is rating: Trigonometry calc at 3.0 against Trigonometry!'s 2.0. Trigonometry!'s advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, ratings volume, update cadence and in-app purchases 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! sells 1 one-off in-app purchase and Trigonometry calc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Trigonometry calc holds the better App Store score, 3.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews complicate that: 14% of Trigonometry!'s written reviews are positive against 0% of Trigonometry calc's, so the app with the better star average is not the one people write more warmly about.
Trigonometry! ships an update every 4 months, Trigonometry calc every 3 months. The most recent releases landed on September 18, 2026 and September 6, 2026 respectively.
| Parameter | Trigonometry! | Trigonometry calc |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (4 ratings) | 3.0 (2 ratings) — better |
| Positive reviews | 14.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 29 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | AppCrab | Bo Kalvslund |
Customer experience
Trigonometry!
Trigonometry calc
In-app purchases
Trigonometry!
- Trigonometry Premium$0.99
Trigonometry calc
- Premium$0.99
Questions
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Is Trigonometry calc free?
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