Comparison

Triangle Solver vs Triangle Calculator Plus

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

Head to head
About

Triangle Solver

This app provides step-by-step solutions for triangle calculations and angle conversions. It includes practice exercises, a trigonometry formula sheet, and an integrated math keyboard for easy input. Ideal for students and professionals needing to master triangle properties.

Highlights
  • Step-by-step triangle calculations
  • Angle conversion
  • Practice trigonometry exercises
  • Trigonometry formula sheet
  • Integrated math keyboard
Features
Read full description

Turn your device into the perfect study companion for geometry and trigonometry. "Triangle Solver" is the ultimate app that guides you through solving triangles, helping you understand the logic behind the numbers and always get the right results. Here's everything our app can do for you: ▶ STEP-BY-STEP SOLUTIONS Get the solution in an instant. But we don't stop at the final result: input any 3 values, and the app will completely solve any type of triangle, showing you all the logical steps in detail. Find key values like sides, angles (in DEG, GON, and RAD formats), area, and perimeter, all the way to advanced values like altitudes, inradius, and circumradius. It's the perfect tool to learn the correct method and get fully prepared for homework and exams. ▶ ANGLE CONVERSION The app includes a dedicated section for quick and accurate conversion of angle measurements. Easily switch between units: the system supports decimal degrees (DEG), gradians (GON), radians (RAD), and degrees, minutes, and seconds (DMS). ▶ INTEGRATED MATH KEYBOARD Use our dedicated interface, designed to be incredibly simple and intuitive. Smoothly and quickly type in your values, having only the keys you truly need right at your fingertips. ▶ GUIDED EXERCISES FOR PRACTICE Test your skills with a rich library of ready-to-solve triangle problems, sorted by difficulty and complete with detailed solutions, so you can strengthen your math foundation whenever you want. ▶ FORMULA SHEET ALWAYS AT HAND Having a memory lapse? Review fundamental principles, basic theorems, and all the formulas for solving triangles right in the app. Everything you need to know about the topic is in one place. ▶ CLEAN INTERFACE AND DARK THEME No complications. The UI is simple, intuitive, and includes an elegant dark theme, specifically optimized to prevent eye strain during your evening study sessions. ▶ GUARANTEED RELIABILITY Our algorithms are tested and highly optimized to ensure accurate and instant calculations every time, even for the most complex geometric and trigonometric problems. ▶ CONSTANT UPDATES AND SUPPORT The app is regularly updated to always offer you the best performance and new features. Download "Triangle Solver" today and take your math skills to the next level!

About

Triangle Calculator Plus

This app instantly solves any triangle problem with multiple solver modes and live visualization. It provides complete triangle properties, step-by-step solutions, and supports various units. Ideal for students, engineers, and professionals needing quick, accurate triangle calculations.

Highlights
  • Multiple solver modes (SSS, SAS, ASA, AAS, SSA, Right Triangle)
  • Live triangle visualization with real-time updates
  • Complete triangle properties (area, perimeter, circumradius, inradius)
  • Step-by-step solution breakdown
  • Unit support for various measurements
  • Tap to copy results
Features
Read full description

Triangle Calculator — Solve Any Triangle Instantly The most powerful triangle calculator on iPhone/iPad. Whether you're a student solving geometry homework, an engineer calculating structural angles, or a teacher demonstrating trigonometry — Triangle Calculator gives you every answer in seconds. 6 POWERFUL SOLVER MODES Tackle any triangle problem, no matter what values you have: SSS — solve from 3 sides using the Law of Cosines SAS — 2 sides and an included angle ASA — 2 angles and the side between them AAS — 2 angles and a non-included side SSA — the ambiguous case, with automatic detection of 0, 1, or 2 solutions Right Triangle — dedicated mode for right triangles using the Pythagorean theorem LIVE TRIANGLE VISUALIZATION Watch your triangle redraw in real time as you type. Animated sides, labeled angles, altitude lines, and vertex markers update instantly. Pinch to zoom for a closer look. COMPLETE TRIANGLE PROPERTIES Go beyond basic sides and angles. Every solution includes: • Area and perimeter • Circumradius R and Inradius r • All 3 medians, altitudes, and angle bisectors STEP-BY-STEP SOLUTIONS Toggle on step-by-step mode to see exactly how each answer was calculated — formulas, substitutions, and results. Perfect for checking your homework or understanding the math behind the answer. TAP TO COPY ANY RESULT Tap any calculated value to instantly copy it to your clipboard — great for pasting into reports, spreadsheets, or other apps. UNIT SUPPORT FOR EVERY FIELD Switch between mm, cm, m, inches, and feet. All results update automatically. Ideal for engineering, construction, architecture, and woodworking. BEAUTIFUL DARK MODE Fully supports iOS Light and Dark Mode with a clean, distraction-free interface. Perfect for: - High school and college geometry & trigonometry students - Engineers, architects, and surveyors - Construction and carpentry professionals - Teachers and tutors - Anyone who needs fast, accurate triangle math Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

Screenshots

Triangle Solver4 screens
Triangle Calculator Plus4 screens

Verdict

The call

The clearest difference is price: Triangle Solver at Free against Triangle Calculator Plus's $3.99. Triangle Solver also leads on update cadence (monthly vs every 23 months) and iOS requirement (15.0 vs 17.6). Triangle Calculator Plus's advantage is ads (none vs shown). On rating, ratings volume, in-app purchases 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

Triangle Solver is free to download; Triangle Calculator Plus costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Triangle Solver against 5.0 for Triangle Calculator Plus. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Triangle Solver ships an update monthly, Triangle Calculator Plus every 23 months. The most recent releases landed on September 3, 2026 and September 25, 2026 respectively.

Scorecard5 real differences · 4 level
Triangle Solver versus Triangle Calculator Plus: the parameters behind the verdict, then further details
ParameterTriangle SolverTriangle Calculator Plus
PriceFree — better$3.99
Rating5.0 (2 ratings)5.0 (1 ratings)
Number of ratings2 — better1
Update frequencyMonthly — betterEvery 23 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size47 MB1 MB
Age rating4+4+
DeveloperFrancesco VarottiHeng Jia Liang

Customer experience

Triangle Solver

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Triangle Calculator Plus

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Triangle Solver

No in-app purchases

None

Triangle Calculator Plus

No in-app purchases

Questions

Is Triangle Solver free?
Triangle Solver is free to download, with no in-app purchases.
Is Triangle Calculator Plus free?
Triangle Calculator Plus costs $3.99, with no in-app purchases.
Which has better reviews, Triangle Solver or Triangle Calculator Plus?
Triangle Solver and Triangle Calculator Plus are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do Triangle Solver or Triangle Calculator Plus have ads?
Triangle Solver shows ads; Triangle Calculator Plus does not.
Which is updated more often, Triangle Solver or Triangle Calculator Plus?
Triangle Solver ships an update monthly, and Triangle Calculator Plus every 23 months. Most recently, Triangle Solver was updated on September 3, 2026 and Triangle Calculator Plus on September 25, 2026.

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