Electrical calculation vs Ohmica
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electrical calculation
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This application assists with electrical wiring calculations for homes, apartments, offices, and small enterprises, along with other essential electrical computations. It provides accurate calculations for cable and wire cross-sections based on the latest standards from PUE publications 6 and 7. If you lack basic electrical knowledge or hands-on experience with wiring installations, please consult a qualified professional. Prioritizing safety is always the best choice. In addition to wiring calculations, the app includes useful features for electricians, such as load distribution analysis and voltage drop estimation. These tools can aid in planning and optimizing electrical installations for efficiency and safety. Regular updates ensure compliance with industry standards and provide an improved user experience. Your feedback is valuable in making this application even more useful for professionals and DIY enthusiasts alike. - Important Notice : This app serves as a helpful tool, not a complete solution. To use it effectively, you must have a fundamental understanding of electrical engineering. Incorrect use may lead to errors or safety hazards. In app purchase included : Life time Privacy policy : https://privacypolicy50.wordpress.com/privacy-policy-subscription/ Terms and condition :https://privacypolicy50.wordpress.com/terms-and-condition/
Ohmica
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Ohmica — The Electronics Calculator Your Multimeter Doesn't Have Most electronics calculators give you a result. Ohmica shows the result, the formula behind it, the substituted values, and the assumptions used. Because when you're working on a real circuit, understanding the math matters. Built for Arduino, ESP32, Raspberry Pi, makers, technicians, electronics hobbyists, and engineers, Ohmica helps you solve real-world electronics problems quickly and confidently. WHY OHMICA • Shows the actual formula used for every calculation • Displays substituted values for transparency • Supports engineering notation such as 4k7, 100nF, and 20mA • Works completely offline • No account required • No ads • Available in English and Vietnamese Unlike generic calculators, Ohmica lets you verify the model behind the result. For example, when calculating voltage drop, Ohmica can show: Vdrop = 500 mA × 847 mΩ (AWG 14, Copper, 40 m Total Run) You immediately know which assumptions were used and can validate the result with confidence. CORE CALCULATORS Fundamentals • Ohm's Law • LED Resistor • Voltage Divider • Resistor Color Code Passive Components • Series / Parallel Resistance • Series / Parallel Capacitance • RC Time Constant • Capacitor Code • Inductor Code Power & Wiring • AWG Reference • Voltage Drop • Battery Runtime • PCB Trace Width • LED Strip Power Digital & Control • PWM & Frequency • I²C Pull-up Resistor • 555 Timer REFERENCES • ESP32 Pinout • Arduino Uno Pinout • Raspberry Pi GPIO • RJ45 T568A / T568B • Common I²C Addresses • SI Prefix Reference Every tool is designed for practical electronics work rather than classroom exercises. Whether you're designing an ESP32 project, sizing LED resistors, checking voltage drop, calculating RC timing, or selecting PCB trace widths, Ohmica helps you get answers without opening a browser or doing calculations by hand. HISTORY & FAVORITES • Save calculations for later • Restore previous inputs instantly • Favorites and recent tools • Search tools quickly • Keep frequently used tools within easy reach OHMICA PRO Unlock advanced professional tools with a one-time purchase. Pro includes: • E-Series Component Picker • Logic Levels • Voltage Regulator • Power Budget • UART Calculator • SPI Calculator • Transistor Switch Calculator • Export History • Future Pro tools No subscription. No recurring fees. Pay once, use forever. If Ohmica saves you time on the bench, Ohmica Pro helps support continued development while keeping the app independent and ad-free. The calculator your multimeter doesn't have.
Screenshots
Verdict
The clearest difference is update cadence: Ohmica at every 3 weeks against Electrical calculation's every 3 months. On price, ads, 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
Both are free to download. Electrical calculation sells 1 one-off in-app purchase and Ohmica sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Electrical calculation ships an update every 3 months, Ohmica every 3 weeks. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.
| Parameter | Electrical calculation | Ohmica |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 44 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Shital Gorasiya | Tam Trinh |
In-app purchases
Electrical calculation
- Lifetime Premium$9.99
Ohmica
- Lifetime$4.99
Questions
Is Electrical calculation free?
Is Ohmica free?
Do Electrical calculation or Ohmica have ads?
Which is updated more often, Electrical calculation or Ohmica?
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