Electrical Calculations vs Machine Defender
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electrical Calculations
This app provides a comprehensive suite of electrical calculations for professionals. It supports various international standards and offers detailed reports in PDF format. The tool covers wiring, power, motor, and electronic calculations, along with extensive conversion tables and resources.
- Wire size and voltage drop calculations
- Power, current, and resistance calculations
- Motor performance and connection diagrams
- Electronic component calculations
- Extensive unit conversions
- PDF report generation
- Support for IEC, CEI, NEC, CEC standards
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Electrical Calculations is the PROFESSIONAL app for those who work with electrical systems every day: design, size and verify in just seconds, from the job site or the office. Over 200 calculations, diagrams, formulas and tables in a single app, with clear, printable PDF reports to attach to your documents. Designed for electricians, installers, designers and surveyors, it saves you time and helps you avoid mistakes: from cable sizing to short circuit. COMPLIANT WITH STANDARDS Reliable results aligned with the main standards: IEC (International Electrotechnical Commission), CEI (Italian Electrotechnical Committee), NEC (National Electrical Code), CEC (Canadian Electrical Code). WHY CHOOSE IT SAVE TIME: the calculations you'd do by hand, instantly available here. AVOID ERRORS: verified formulas and up-to-date regulatory parameters. PROFESSIONAL REPORTS: PDF reports ready for printing and archiving. ALWAYS WITH YOU: over 200 tools including calculations, converters, tables and pinouts. THE MOST USED CALCULATIONS Cable sizing and coordination with the protective device, voltage drop, operating current, current intensity, voltage and power (active, reactive, apparent). Power factor and power factor correction. Current capacity of conductors and busbars, sizing of conduits and trunking, maximum cable length. SHORT CIRCUIT AND PROTECTION Short-circuit current at a point on the line, earthing system and coordination with the residual current device, cable protection against short circuit (K²S²), power loss, cable temperature, neutral current. ELECTRIC MOTOR Motor current, power, voltage, efficiency and power factor, slip, speed, maximum torque and full-load current. Three-phase motor connection diagrams, terminal markings. Three-phase to single-phase. ELECTRONICS Color and alphanumeric codes for resistors, capacitors and inductors, SMD code, LED resistor, voltage and current divider, Zener diode, battery life, resonant frequency, fuses and transformers. CONVERSIONS Delta-star, AWG, SWG, cross-section, length, energy, temperature, pressure, Ah/kWh, var/µF, Gauss/Tesla, RPM and many more. RESOURCES AND TABLES Tripping curves, cable reactance and resistivity, cable dimensions and weight, distribution systems (TT, TN, IT), IP/IK/NEMA protection ratings, ATEX marking, insulation classes, electrical symbols, ANSI device codes, plugs and sockets, IEC 60309, NEMA and EV charging connectors, SI prefixes and units of measurement, thermistors and thermocouples. PINOUTS Ethernet RJ-45, Ethernet with PoE, USB, HDMI, VGA, DVI, RS-232, FireWire, SATA, DisplayPort, Apple Lightning, Raspberry Pi, OBD II, XLR audio/DMX, MIDI, Jack, RCA, Thunderbolt, SD Card, SIM Card and LED. Stop searching everywhere for formulas and tables: PUT YOUR ENTIRE ELECTRICAL LAB IN YOUR SMARTPHONE. Download Electrical Calculations and work faster, with standards-compliant results. Terms of service (EULA): https://www.egalnetsoftwares.com/terms_of_service_app/
Machine Defender
This app, used with a wireless vibration sensor, collects and analyzes vibration data from industrial rotating machinery. It automatically detects faults in components like motors and pumps, providing diagnostic reports and maintenance recommendations.
- Wireless vibration data collection
- Automatic fault detection with AI
- Machine health assessment
- Maintenance recommendations
- Report storage and sharing
- Cloud platform connectivity
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Used in combination with the wireless vibration sensor CAC100800, the ACOEM Machine Defender app helps mechanics to collect vibration data wirelessly and detect faults automatically with the ACOEM Accurex artificial intelligence engine. It is now possible to assess automatically the health of industrial rotating assets and detect faults on various components such as: electric motors, pumps, fans, compressors, gearboxes and more. The vibration measurement settings are automatically defined based on a visual description of the machine kinematics in the field on the mobile device. The user is guided step by step through the whole vibration measurement process, and the ACOEM Accurex automatic diagnostic is performed instantly right in front of the rotating machine and without prior learning phase needed. It provides automatic diagnostic capabilities with overall machinery health assessment, list of faults detected with severity, location on the machine and confidence level, and first level of maintenance recommendation. The following types of defects are managed: bearing or lubrication problem, unbalance, misalignment, structural resonance, pump cavitation, gear defects, shocks or modulation resulting from electrical defects or looseness, other ISO failures such as belt wear, soft foot, nearby disturbance, and more. Results and reports can easily be stored in the app and communicated through native features of the mobile device. It can also be connected to the ai.acoem.com cloud platform, centralizing vibration diagnostics reports, laser alignment reports, data trending and maintenance tasks management. The ACOEM Machine Defender app empowers mechanics to easily improve industrial plant reliability and performance with modern maintenance solutions. To learn more, please visit our website at acoem.com Wireless sensors compatible: CAC1008000
Screenshots
Verdict
The clearest difference is in-app purchases: Machine Defender at none against Electrical Calculations's 3. Machine Defender also leads on ads (none vs shown) and rating (5.0 vs 4.6). Electrical Calculations's advantage is update cadence (every 3 weeks vs every 8 months) and ratings volume (126 vs 1). On price 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 Calculations sells 3 in-app purchases, starting at $3.99 per 3 months. Machine Defender asks for nothing beyond the download.
Machine Defender holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Electrical Calculations has 126 ratings behind it against 1, so its average is the more settled of the two.
Electrical Calculations ships an update every 3 weeks, Machine Defender every 8 months. The most recent releases landed on October 8, 2026 and September 28, 2026 respectively.
| Parameter | Electrical Calculations | Machine Defender |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (126 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 86.7% of reviews | — |
| Number of ratings | 126 — better | 1 |
| Update frequency | Every 3 weeks — better | Every 8 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.1 — better |
| Further details — not scored | ||
| Size | 56 MB | 274 MB |
| Age rating | 4+ | 4+ |
| Developer | Egal Net di Ettore Gallina | ACOEM Group |
Customer experience
Electrical Calculations
Machine Defender
In-app purchases
Electrical Calculations
- PRO Version (3 months)$3.993 Months
- PRO Version (1 year)7 Days trial$7.491 Year
- PRO Version (Lifetime)$89.99
Machine Defender
No in-app purchases
Questions
Is Electrical Calculations free?
Is Machine Defender free?
Which has better reviews, Electrical Calculations or Machine Defender?
Do Electrical Calculations or Machine Defender have ads?
Which is updated more often, Electrical Calculations or Machine Defender?
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