Electrical Engineering Toolkit vs My Cali
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electrical Engineering Toolkit
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Design faster, check formulas instantly, and get confident answers—whether you’re wiring a prototype, laying out a PCB, or verifying lab results. This all-in-one toolkit brings together the most-used electronics calculators so you don’t have to jump between apps or spreadsheets. Core Circuits & Passives • Ohm’s Law (V, I, R, P) • Resistor color code (through-hole & SMD) • Series/parallel & voltage divider • Capacitance & capacitor impedance (RC) • Inductance/reactance/admittance; coil/loop inductance • Battery life estimation • RMS/peak/peak-to-peak voltage • Decibel (dB) converters for power/voltage levels Analog & RF Essentials • Op-amp gain/voltage and inverting resistor calculators • Impedance matching: π-match and T-match • RF power: ratio/units conversion, PAE, N-way power divider • dB/dBm helpers for quick link-budget math These are the same families of tools engineers rely on for day-to-day analog and RF work. PCB & Signal Integrity (EDA) • Microstrip/stripline impedance (single-ended & differential) • Trace width and max current • Crosstalk (edge/broadside), wire/microstrip inductance These capabilities mirror what dedicated PCB toolkits and online impedance calculators provide—now in one place on your phone. Electromechanical & Power • Lenz’s & Faraday’s laws (induced EMF) • Torque conversion and stepper motor helpers • Flyback SMPS building blocks • Heat sink basics & power density • Peak/peak-to-peak/RMS and power conversions These bridge the gap between bench calculations and real hardware choices. Physics & Foundations • Lorentz force, electrical energy, RC time constant, LC tank resonance—handy checks for labs and exams alike. Why this app? • Comprehensive: from Ohm’s Law and resistor codes to PCB impedance and RF power—covering the everyday set engineers actually use. • Built for speed: clean inputs, clear results, and units you expect. • For everyone: students learning the basics, makers iterating quickly, and professionals verifying designs. Perfect for: electronics labs, field service, ham/RF projects, PCB layout checks, audio/dB work, and rapid “sanity-check” calculations during reviews. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
My Cali
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Về California Nhập kho, Xuất kho, Kiểm kê kho Danh sách khách hàng, thêm mới, sửa thông tin khách hàng Chức năng thêm mới list sale up system hàng ngày của từng CLB Tạo hợp đồng, phiếu thu Ký hợp đồng điện tử Chức năng booking session tập luyện cho khách hàng, xem lịch tập, lịch hẹn với khách hàng Kiểm tra số lượng học viên trong lớp và actual trainer Tracking bài tập trong 1 session tập của khách hàng Cập nhật các chỉ số Inbody, Exbody và xét nghiệm máu
Screenshots
Verdict
The clearest difference is in-app purchases: My Cali at none against Electrical Engineering Toolkit's 3. My Cali also leads on update cadence (every 4 months vs every 9 months). On price, ads, device support and iOS requirement 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. Electrical Engineering Toolkit sells 3 in-app purchases, starting at $0.99 per month. My Cali asks for nothing beyond the download.
Electrical Engineering Toolkit ships an update every 9 months, My Cali every 4 months. The most recent releases landed on October 12, 2026 and September 29, 2026 respectively.
| Parameter | Electrical Engineering Toolkit | My Cali |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.2 | 15.1 — better |
| Further details — not scored | ||
| Size | 12 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Vladislav Zhirnov | TIT TECHNOLOGY AND SERVICE JOINT STOCK COMPANY |
In-app purchases
Electrical Engineering Toolkit
- Full version / monthly$0.991 Month
- Full version / year$3.991 Year
- Support project, remove ADS$5.99
My Cali
No in-app purchases
Questions
Is Electrical Engineering Toolkit free?
Is My Cali free?
Do Electrical Engineering Toolkit or My Cali have ads?
Which is updated more often, Electrical Engineering Toolkit or My Cali?
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