Comparison

Trigonometry Help vs Trigonometry Calculator.

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Trigonometry Help

This app helps you quickly solve for unknown angles and sides of right-angled triangles. It provides a workings view for understanding the math, a scale drawing of the triangle, and a reference for basic trigonometric formulas. You can input angles in various formats and choose your desired decimal precision.

Highlights
  • Solve right-angled triangles
  • Workings view for solutions
  • Scale drawing of solved triangle
  • Basic trig formulae reference
  • Multiple angle input formats
  • Customizable decimal places
Features
Read full description

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 OS X on the Mac App Store.

About

Trigonometry Calculator.

This app calculates key values for right-angled and scalene triangles with high precision. It offers a user-friendly interface, flexible angle units, and includes a reference guide to trigonometric formulas. A subscription unlocks calculation steps and removes ads.

Highlights
  • Right-angled & scalene triangle support
  • Formula reference guide
  • Accurate side, angle, and area calculations
  • High precision to 14 decimal places
  • Flexible angle units (degrees/radians)
  • User-friendly interface
Read full description

Triangle Trigonometry Calculator Effortlessly calculate key values for both right-angled and scalene triangles with this intuitive, high-precision trigonometry calculator. Key Features: • Right-Angled & Scalene Support: Easily solve both right-angled and scalene triangles based on the values you know. • Formula Reference: Learn and solve with confidence by accessing a clear, organized guide to all triangle formulas used in the app. • Accurate Calculations: Quickly determine sides, angles, and area with reliable trigonometric formulas. • High Precision: Results are calculated to 14 decimal places for maximum accuracy. • Flexible Angle Units: Choose between degrees or radians for all angle inputs and outputs. • User-Friendly Interface: A clean, minimal design for fast, straightforward calculations. • Fast and Efficient: Ideal for students, engineers, and professionals needing quick, accurate results anytime. Subscribe to unlock calculation steps, formulas, and remove ads!

Screenshots

Trigonometry Help4 screens
Trigonometry Calculator.4 screens

Verdict

The call

The clearest difference is price: Trigonometry Calculator. at Free against Trigonometry Help's $1.99. Trigonometry Calculator. also leads on update cadence (every 2 weeks vs every 13 months) and rating (5.0 vs 4.7). Trigonometry Help's advantage is ads (none vs shown) and ratings volume (477 vs 3). On in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Trigonometry Calculator. is free to download; Trigonometry Help costs $1.99 up front. Trigonometry Help sells 3 one-off in-app purchases and Trigonometry Calculator. sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Trigonometry Calculator. holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Trigonometry Help has 477 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 91% of Trigonometry Help's written reviews are positive against 100% of Trigonometry Calculator.'s.

UpkeepUpdate frequency

Trigonometry Help ships an update every 13 months, Trigonometry Calculator. every 2 weeks. The most recent releases landed on September 23, 2026 and September 27, 2026 respectively.

Scorecard7 real differences · 3 level
Trigonometry Help versus Trigonometry Calculator.: the parameters behind the verdict, then further details
ParameterTrigonometry HelpTrigonometry Calculator.
Price$1.99Free — better
Rating4.7 (477 ratings)5.0 (3 ratings) — better
Positive reviews90.8% of reviews100.0% of reviews — better
Number of ratings477 — better3
Update frequencyEvery 13 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better15.0
Further details — not scored
Size21 MB64 MB
Age rating+44+
DeveloperArmchair EngineeringHoritech

Customer experience

Trigonometry Help

All ratings477 ratings
Positive94.1%
Neutral2.3%
Negative3.6%
Written reviews141 reviews
Positive90.8%
Neutral2.1%
Negative7.1%

Trigonometry Calculator.

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Trigonometry Help

Reported bugs

2 issues
  • Inconsistent performance on older devices
  • Occasional crashes or freezes

Requested features

3 requests
  • Support for irregular triangles
  • Ability to show step-by-step workings
  • Option to switch between degrees/minutes/seconds and decimal values

Trigonometry Calculator.

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Trigonometry Help

One-time3
  • Trig Help Premium$0.99
  • Trig Help Premium$1.99
  • Trig Help Premium$3.99
2 purchases

Trigonometry Calculator.

Subscriptions2
  • Monthly3 Days trial$2.991 Month
  • Annual3 Days trial$24.991 Year

Questions

Is Trigonometry Help free?
Trigonometry Help costs $1.99, and also offers in-app purchases.
Is Trigonometry Calculator. free?
Trigonometry Calculator. is free to download, with in-app purchases available.
Which has better reviews, Trigonometry Help or Trigonometry Calculator.?
Trigonometry Calculator. is rated higher. Trigonometry Help averages 4.7 out of 5 from 477 ratings, while Trigonometry Calculator. averages 5.0 from 3 ratings.
Do Trigonometry Help or Trigonometry Calculator. have ads?
Trigonometry Calculator. shows ads; Trigonometry Help does not.
Which is updated more often, Trigonometry Help or Trigonometry Calculator.?
Trigonometry Help ships an update every 13 months, and Trigonometry Calculator. every 2 weeks. Most recently, Trigonometry Help was updated on September 23, 2026 and Trigonometry Calculator. on September 27, 2026.

Other comparisons