Comparison

Capacitor Calculator vs Trigonometry Master

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

Head to head
About

Capacitor Calculator

This utility app calculates the time constant and energy stored in a capacitor. It helps understand the time-delay characteristics of electrical circuits when a voltage is applied.

Highlights
  • Calculate time constant (RC)
  • Calculate energy stored (E)
  • Input voltage, capacitance, and resistance
  • Understand capacitor charging/discharging
  • Analyze circuit time-delay
Features
Read full description

Capacitor Calculator is an all-in-one toolkit for students, hobbyists, technicians, and electrical engineers who work with capacitors every day. Whether you are designing an RC circuit, sizing a power supply, building a flash circuit, or studying electromagnetism for an exam, this app gives you fast and accurate answers together with the formulas and calculation steps behind every result. THREE CALCULATORS IN ONE APP 1. Capacitor Charge and Time Constant Enter supply voltage (V), capacitance (C), and series resistance (R) to instantly calculate: • Stored energy: E = 0.5 * C * V^2 • RC time constant: T = R * C • Charge stored: Q = C * V 2. Parallel Plate Capacitance Compute capacitance using plate area, separation distance, and relative permittivity with: C = e0 * er * A / d Perfect for understanding how geometry and dielectric materials affect capacitance. 3. Spherical Capacitor Calculate capacitance between two concentric conducting spheres using: C = 4 * pi * e0 * er * R1 * R2 / (R2 - R1) Choose from built-in dielectric materials including vacuum, air, paper, glass, mica, ceramic, polyethylene, polystyrene, Teflon, silicon, and water. BUILT FOR REAL WORK • Unit-aware inputs for voltage, capacitance, resistance, length, and area • Scientific notation for very small or very large values • Full calculation steps with formulas and substituted values • Copy results with one tap • Save and review calculation history • Everything runs on-device with no tracking, no account, and no internet required A POLISHED NATIVE IOS EXPERIENCE • Full Light Mode and Dark Mode support • Reference tab with physical constants, formulas, and dielectric materials table Capacitor Calculator is a focused tool for electrical engineering, electronics design, physics homework, and EE coursework. Download it once and keep professional-grade capacitor calculations in your pocket. Thanks for your support, and visit nitrio.com for more apps for your iPhone and iPad.

About

Trigonometry Master

Easily calculate unknown sides, angles, area, and perimeter of any triangle. Supports both right and oblique triangles with visual input modes and adjustable decimal places for accuracy. Includes a history tape and email sharing for recent calculations.

Highlights
  • Solves right and oblique triangles
  • Calculates sides, angles, area, perimeter
  • Draws calculated triangles
  • Supports degrees and radians
  • Visual input modes
  • Adjustable decimal places
  • History tape and email results
Features
Read full description

Trigonometry Master is a easy to use app that allows you to quickly calculate unknown sides and angles of any triangle. It will also calculate the area and perimeter and draw the triangle. The app finds the sides, angles, area and perimeter of a triangle based on input parameters. - Right triangle: Enter two values, two sides or a side and an angle, tap Calculate and Trigonometry Master will find remaining values. - Oblique triangle: Enter three values, tap Calculate and Trigonometry Master will do the rest. Valid inputs: • three sides • two sides and an angle • two angles and a side Features: - Solves right triangles. - Solves oblique triangles. - Calculates unknown sides, angles, area and perimeter of a triangle. - Draws a calculated triangle with one click. - Supported angle units: degrees, radians. - 2 input modes based on the required level of visualisation: • Mode 1 (standard mode) - input fields are located above the triangle picture and linked with the picture through the names of sides and angles; • Mode 2 (more visualized mode) - input fields for sides and angles are located directly on the triangle picture so you can easily understand which parameter you are entering. - You can select the desired number of decimal places to adjust the accuracy of the results. - History tape to view your recent calculations. - Back and forward buttons to recall recent calculations. - Sends results and history via email. - 'Undo' for the Clear command. - 7 color schemes. - Portrait and landscape orientation.

Screenshots

Capacitor Calculator4 screens
Trigonometry Master4 screens

Verdict

The call

The clearest difference is price: Capacitor Calculator at $2.99 against Trigonometry Master's $12.99. Capacitor Calculator also leads on rating (3.8 vs 2.5). Trigonometry Master's advantage is update cadence (every 10 months vs every 29 months) and iOS requirement (11.0 vs 17.6). On ratings volume, ads, in-app purchases and monetization model 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

Capacitor Calculator costs $2.99 and Trigonometry Master $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Capacitor Calculator holds the better App Store score, 3.8 against 2.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

UpkeepUpdate frequency

Capacitor Calculator ships an update every 29 months, Trigonometry Master every 10 months. The most recent releases landed on September 14, 2026 and September 10, 2026 respectively.

Scorecard4 real differences · 6 level
Capacitor Calculator versus Trigonometry Master: the parameters behind the verdict, then further details
ParameterCapacitor CalculatorTrigonometry Master
Price$2.99 — better$12.99
Rating3.8 (4 ratings) — better2.5 (2 ratings)
Positive reviews—50.0% of reviews
Number of ratings4 — better2
Update frequencyEvery 29 monthsEvery 10 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS17.611.0 — better
Further details — not scored
Size1 MB12 MB
Age rating4+4+
DeveloperNitrioIntemodino Group s.r.o.

Customer experience

Capacitor Calculator

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Trigonometry Master

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews6 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Capacitor Calculator

No in-app purchases

None

Trigonometry Master

No in-app purchases

Questions

Is Capacitor Calculator free?
Capacitor Calculator costs $2.99, with no in-app purchases.
Is Trigonometry Master free?
Trigonometry Master costs $12.99, with no in-app purchases.
Which has better reviews, Capacitor Calculator or Trigonometry Master?
Capacitor Calculator is rated higher. Capacitor Calculator averages 3.8 out of 5 from 4 ratings, while Trigonometry Master averages 2.5 from 2 ratings.
Do Capacitor Calculator or Trigonometry Master have ads?
Neither Capacitor Calculator nor Trigonometry Master shows ads.
Which is updated more often, Capacitor Calculator or Trigonometry Master?
Capacitor Calculator ships an update every 29 months, and Trigonometry Master every 10 months. Most recently, Capacitor Calculator was updated on September 14, 2026 and Trigonometry Master on September 10, 2026.

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