Capacitor Calculator vs Trigonometry Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Calculate time constant (RC)
- Calculate energy stored (E)
- Input voltage, capacitance, and resistance
- Understand capacitor charging/discharging
- Analyze circuit time-delay
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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.
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | Capacitor Calculator | Trigonometry Master |
|---|---|---|
| Price | $2.99 — better | $12.99 |
| Rating | 3.8 (4 ratings) — better | 2.5 (2 ratings) |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 29 months | Every 10 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | Intemodino Group s.r.o. |
Customer experience
Capacitor Calculator
Trigonometry Master
In-app purchases
Capacitor Calculator
No in-app purchases
Trigonometry Master
No in-app purchases
Questions
Is Capacitor Calculator free?
Is Trigonometry Master free?
Which has better reviews, Capacitor Calculator or Trigonometry Master?
Do Capacitor Calculator or Trigonometry Master have ads?
Which is updated more often, Capacitor Calculator or Trigonometry Master?
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