Electronics Engineer Helper vs CalcMatrizes
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electronics Engineer Helper
This app provides a comprehensive suite of calculators and reference tools for electronics enthusiasts and professionals. It includes features for component identification, circuit calculations, and electrical property analysis, aiding in both study and practical work.
- Datasheet search
- Resistor color code calculator
- Electronic schematic symbols
- Pinouts guide
- Ohm's law calculator
- AWG converter
- Unit converter
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Digital toolbox for electronics engineers and electricians. Calculators and references for beginners and professionals — for work, study, DIY, and repair. Used by over 100,000 users. Completely ad-free. Included tools: • Datasheet search • Equivalent parts search (cross reference for transistors, diodes and ICs) • Resistor color and digit marking (4, 5 and 6 band color code; 2 symbols, 3/4 digit and EIA-96 code SMD resistors code) • Electronic schematic symbols (IEC 60617, IEEE 315 and GOST standards) • Pinouts of connectors and interfaces (USB, HDMI, DisplayPort, DVI, VGA, Thunderbolt, Apple Lightning and 30-pin, SATA, PCI Express and M.2, Ethernet RJ45 with PoE, RJ11/RJ14/RJ25, RS-232/422/485, IEEE 1394 FireWire, ATX, computer fans, SD card, audio jack, RCA, MIDI, XLR, PS/2, D-sub, SMEMA) • Pinouts of boards and microcontrollers (Raspberry Pi and Pico, Arduino, ESP32, ESP8266, STM32 Nucleo, Teensy, Orange Pi, RADXA Rock Pi, LubanCat, Flipper Zero, ATmega and ATtiny) • Ohm's law calculator • AWG converter (wire diameter, cross-section area, resistance and maximum current) • Resistor for LED • Voltage divider • Wheatstone bridge (output voltage or unknown resistance, current and power of every arm) • Capacitor code • Capacitor markings • Capacitor ESR tables • Frequency response curve calculation of passive filters (RC, RL, RLC, LC) • Inductor color code • Air-core coil calculator (inductance or number of turns of a single-layer solenoid) • Ideal transformer (winding turns, voltages and currents) • Linear current regulator • SMD packages list • Reactance • PCB trace resistance • Active, apparent and reactive power • RMS converter (peak, RMS and peak-to-peak values for seven waveform shapes) • 555 waveform generator • Operational amplifiers • RLC circuit • Number conversion • Unit converter • Cable voltage drop • Battery life (runtime of a battery pack, with discharge curve) • NTC thermistor resistance • Logic gates • RC circuit • Decibels calculator • 25-pair cable color code • Fuse color marking Additionally, by purchasing the PRO version of the app, you will get access to additional tools: • SMD components marking codes • Diodes color code (Pro Electron, JEDEC and JIS-C-7012 standards) • Linear voltage regulator • Resistor value to color or SMD code marking converter • Voltage rectifier • Series or parallel electrical components' connection calculator • Diode voltage drop • Minimum PCB trace width • Analog to digital conversion • Attenuators • 4-20 mA signal converter • Thermocouple calculator • Resistance thermometer • Buck switching voltage regulator • Wire resistance • Zener diode regulator (Zener diode and series resistor selection from a catalogue of 438 parts) • Load cell (bridge output voltage to weight, force, pressure or torque) • BJT voltage divider biasing • Transformer turns per volt (from core area, flux density and frequency) • Junction temperature (with or without a heatsink, power derating curve) • Solar string dimensioning (minimum voltage and current ratings for a PV array) • Solar cable and fuse selection (NEC and IEC rules) • 555 astable generator with variable duty cycle • NTC thermistor in a voltage divider and with an ADC input Privacy Policy: https://www.eehelper.app/ios/privacy/ Terms of Use: https://www.eehelper.app/ios/terms/
CalcMatrizes
This app simplifies complex matrix operations for students and enthusiasts. It offers a wide range of functions including inversion, transposition, multiplication, addition, subtraction, scalar multiplication, and solving matrix equations. It also supports calculations with variables.
- Invert matrices
- Transpose matrices
- Multiply matrices
- Add/subtract matrices
- Scalar multiplication
- Matrix equation solver
- Variable support
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Pensando nas necessidades de estudantes de engenharia, entusiastas de matemática e afins, pode-se considerar que realizar operações com matrizes é uma das atividades mais trabalhosas e repetitivas pertencentes ao campo da matemática geral. Com o intuito de facilitar processos que envolvem a aplicação de tais conceitos, foi criada a melhor calculadora de matrizes da App Store: o CalcMatrizes! Se há algo chato em mexer em matrizes e suas operações, é realizar longos processos de escalonamento, como quando realizamos inversões, ou resolvemos equações matriciais com proporções que nos fazem perguntar-nos se o resultado que obtivemos é realmente o correto. Com isso, eis as funcionalidades que o CalcMatrizes oferece para que seus problemas sejam resolvidos: - Inverter matrizes - Transpor matrizes - Multiplicar matrizes - Adicionar/subtrair matrizes - Multiplicar matrizes por escalares - Realizar escalonamento (reduzido e não reduzido) - Resolver equações matriciais, do tipo: - AxX=B - BxX=A - XxA=B - XxB=A (em que A e B são, respectivamente, a primeira e segunda matrizes escritas no processo de resolução) Acima de tudo, além de aceitar números como as entradas da matriz, o CalcMatrizes também aceita o preenchimento de campos utilizando letras (que vão de a-i), de modo a permitir que cálculos sejam realizados em função de variáveis, e não apenas números conhecidos. Com uma ferramenta dessas em mãos, não há porque se frustrar com problemas tão chatos e desgastantes quanto trabalhar com uma matriz 4x4 simplesmente com uma caneta e uma folha de papel!
Screenshots
Verdict
The clearest difference is rating: Electronics Engineer Helper at 4.8 against CalcMatrizes's 3.0. Electronics Engineer Helper also leads on ratings volume (436 vs 2) and update cadence (monthly vs every 5 months). CalcMatrizes's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 17.0). On price, ads 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. Electronics Engineer Helper sells 2 in-app purchases, starting at $4.89 per year. CalcMatrizes asks for nothing beyond the download.
Electronics Engineer Helper holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Electronics Engineer Helper has 436 ratings behind it against 2, so its average is the more settled of the two.
Electronics Engineer Helper ships an update monthly, CalcMatrizes every 5 months. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.
| Parameter | Electronics Engineer Helper | CalcMatrizes |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (436 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 97.7% of reviews | — |
| Number of ratings | 436 — better | 2 |
| Update frequency | Monthly — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 17.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 92 MB | 14 MB |
| Age rating | 12+ | 4+ |
| Developer | Rostyslav Dovhaliuk | Poli Júnior |
Customer experience
Electronics Engineer Helper
CalcMatrizes
Bugs and requests
Electronics Engineer Helper
Reported bugs
2 issues- Incorrect resistor color code display for some values
- In-app purchase option not working for some users
Requested features
5 requests- Add more circuit schematics and examples
- Include ASCII code to decimal, hex, and octal conversion
- Expand the pinout section with more details
- Add active filter (RC, RL, RLC, LC) calculators
- Include digital to analog converter, transistor, and transformer calculators
CalcMatrizes
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Electronics Engineer Helper
- 1 Year Subscription1 Month trial$4.891 Year
- Lifetime PRO Version$12.49
CalcMatrizes
No in-app purchases
Questions
Is Electronics Engineer Helper free?
Is CalcMatrizes free?
Which has better reviews, Electronics Engineer Helper or CalcMatrizes?
Do Electronics Engineer Helper or CalcMatrizes have ads?
Which is updated more often, Electronics Engineer Helper or CalcMatrizes?
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