Trigonometry calc vs Tri
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
Tri
This app simplifies math homework with a suite of tools including area, basic, and trigonometry calculators. It offers offline access and equation solvers for first and second-degree equations, with more features planned.
- Offline Access
- Area Calculator
- Basic Calculator
- Trigonometry Calculator
- Unit Converter
- Equation Solvers
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Easily complete your homework with this app! Key Features: Offline Access: Use the app anytime, anywhere. Area Calculator: Quickly compute the area of shapes. Basic Calculator: Simplify everyday calculations. Trigonometry Calculator: Solve the Pythagorean theorem. Calculate trigonometric functions. Unit Converter: Convert between units with ease. Equation Solvers: Solve first-degree equations! Solve second-degree equations! And More Features Coming Soon!
Screenshots
Verdict
The clearest difference is review sentiment: Tri at 67% against Trigonometry calc's 0%. Tri also leads on rating (4.5 vs 3.0) and ratings volume (17 vs 2). On price, update cadence, ads 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 calc sells 1 one-off in-app purchase and Tri sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Tri holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Tri has 17 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 67% of Tri's.
Trigonometry calc ships an update every 3 months, Tri every 2 months. The most recent releases landed on October 18, 2026 and October 5, 2026 respectively.
| Parameter | Trigonometry calc | Tri |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 4.5 (17 ratings) — better |
| Positive reviews | 0.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 2 | 17 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | Yes | Yes |
| 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 | 12.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Bo Kalvslund | Alejandro Apodaca |
Customer experience
Trigonometry calc
Tri
In-app purchases
Trigonometry calc
- Premium$0.99
Tri
- Quitar anuncios$1.99
Questions
Is Trigonometry calc free?
Is Tri free?
Which has better reviews, Trigonometry calc or Tri?
Do Trigonometry calc or Tri have ads?
Which is updated more often, Trigonometry calc or Tri?
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