Trigonometry! vs Trigonometry Identities Proofs
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 Identities Proofs
Learn and practice trigonometric identity proofs with step-by-step solutions. Compare your work to the app's detailed explanations, revealing each step individually.
- 42 trigonometric identity proofs
- Step-by-step solution reveal
- Compare your work to app solutions
- Practice trigonometry
- Educational math tool
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This app has 42 Trigonometric Proofs of Identities. Work on your own and then compare your answers to the steps shown in the app for proving the identity. Each step in the app is initially hidden and can be shown by clicking on the + button.
Screenshots
Verdict
The clearest difference is price: Trigonometry! at Free against Trigonometry Identities Proofs's $0.99. Trigonometry! also leads on rating (2.0 vs 1.0) and update cadence (every 4 months vs every 32 months). Trigonometry Identities Proofs's advantage is in-app purchases (none vs 1). On ratings volume, ads and device support 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
Trigonometry! is free to download; Trigonometry Identities Proofs costs $0.99 up front. Trigonometry! sells 1 one-off in-app purchase. Trigonometry Identities Proofs asks for nothing beyond the download.
Trigonometry! holds the better App Store score, 2.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 14% of Trigonometry!'s written reviews are positive against 0% of Trigonometry Identities Proofs's.
Trigonometry! ships an update every 4 months, Trigonometry Identities Proofs every 32 months. The most recent releases landed on September 18, 2026 and August 15, 2026 respectively.
| Parameter | Trigonometry! | Trigonometry Identities Proofs |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 2.0 (4 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 14.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 4 months — better | Every 32 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 29 MB | 18 MB |
| Age rating | 4+ | 12+ |
| Developer | AppCrab | H3 Apps, LLC |
Customer experience
Trigonometry!
Trigonometry Identities Proofs
In-app purchases
Trigonometry!
- Trigonometry Premium$0.99
Trigonometry Identities Proofs
No in-app purchases
