Triangle Solver vs Trigonometry calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Triangle Solver
Calculate unknown sides and angles of a triangle with ease. Supports various input combinations, including two angles and one side, two sides and one angle, or three sides.
- Calculate unknown sides
- Calculate unknown angles
- Two angles and one side input
- Two sides and one angle input
- Three sides input
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If you know two angles and one side of a triangle, quickly and easily calculate the rest. Also handles cases where you know two sides and one angle, or three sides and no angles.
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
Screenshots
Verdict
The clearest difference is review sentiment: Triangle Solver at 75% against Trigonometry calc's 0%. Triangle Solver also leads on rating (4.2 vs 3.0) and in-app purchases (none vs 1). Trigonometry calc's advantage is update cadence (every 3 months vs every 21 months). On price 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
Both are free to download. Trigonometry calc sells 1 one-off in-app purchase. Triangle Solver asks for nothing beyond the download.
Triangle Solver holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: Triangle Solver has 31 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 75% of Triangle Solver's written reviews are positive against 0% of Trigonometry calc's.
Triangle Solver ships an update every 21 months, Trigonometry calc every 3 months. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.
| Parameter | Triangle Solver | Trigonometry calc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (31 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 75.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 31 — better | 2 |
| Update frequency | Every 21 months | Every 3 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | 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 | 97 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | William Jockusch | Bo Kalvslund |
Customer experience
Triangle Solver
Trigonometry calc
Bugs and requests
Triangle Solver
Reported bugs
10 issues- Stopped working on iPhone and iPad
- App crashes
- Won't open on older devices
- Doesn't allow value entry
- Input fields not clear
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- Buttons are tiny and difficult to read
- Gives NAN answers
- Erases input when typing numbers
- Screen jumps when entering values
- Cannot enter any variables after upgrade
Requested features
6 requests- Add switch to radians feature
- Allow input of irrational numbers
- Show steps for solving problems
- Triangle shape changes to match values for accurate scale
- Option to use app sideways for larger keyboard
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- Ability to use squares
Trigonometry calc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Triangle Solver
No in-app purchases
Trigonometry calc
- Premium$0.99
Questions
Is Triangle Solver free?
Is Trigonometry calc free?
Which has better reviews, Triangle Solver or Trigonometry calc?
Do Triangle Solver or Trigonometry calc have ads?
Which is updated more often, Triangle Solver or Trigonometry calc?
Other comparisons
