EngineerCalc vs PLC Assistance
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EngineerCalc
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EngineerCalc is an app for electrical engineers and hobbyists. At the moment, it includes 4 calculators: • CapacitorCalc - Calculate the ripple voltage refusing capacitor capacitance and min. voltage for your AC-DC circuit • InductorCalc - Calculate the inductance, needed wire-length (and resistance of the wire) and Q-value for your diy coil/inductor • LC-TankCircuit - Calculate the 3rd value of your tank-circuit (capacitance, inductance or frequency) • Ohm'sLawCalc - Calculate the 3rd and/or 4th value of an Ohm's law circuit (voltage, current, resistance or power ) The app supports multiple units which you can change by tapping the unit-label: For CapacitorCalc: • Voltage (Volt) - V • Current (Amper) - A • Frequency (Herz) - Hz For InductorCalc: • Distance (Meter) - µm, mm, cm, m, Km • Resistance (Ohm) - pΩ, nΩ, µΩ, mΩ, Ω, KΩ, MΩ, GΩ • Frequency (Herz) - Hz, KHz, MHz, GHz • Inductance (Henry) - pH, nH, µH, mH, H, KH, MH, GH For LC-TankCircuit: • Capacitance (Farad) - pF, nF, µF, mF, F, KF, MF, GF • Inductance (Henry) - pH, nH, µH, mH, H, KH, MH, GH • Frequency (Herz) - Hz, KHz, MHz, GHz For Ohm'sLawCalc: • Voltage unit (Volt) - pV, nV, µV, mV, V, KV, MV, GV • Current unit (Amper) - pA, nA, µA, mA, A, KA, MA, GA • Resistance unit (Ohm) - pΩ, nΩ, µΩ, mΩ, Ω, KΩ, MΩ, GΩ • Power unit (Watt) - pW, nW, µW, mW, W, KW, MW, GW If you have an development suggestion, want to request an unit support or want to report a bug, you can get in touch with me trough my website https://ssl-saario.xyz/AppFiles/html/eCalcHelp.html
PLC Assistance
This AI-powered tool assists electrical and automation engineers in understanding PLC logic, troubleshooting issues, and enhancing their workflow. It provides instant answers and programming support for various industrial automation systems, helping users save time and improve efficiency.
- PLC programming support (ladder logic, structured text)
- Troubleshooting and debugging guidance
- Instant answers for industrial automation problems
- AI assistant tailored for engineers
- Support for Siemens, Allen-Bradley, and other PLC systems
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PLC AI Assistant is designed for electrical and automation engineers. It helps you quickly understand PLC logic, troubleshoot issues, and improve your workflow with AI-powered assistance. Key Features: - PLC programming support (ladder logic, structured text) - Troubleshooting and debugging guidance - Instant answers for industrial automation problems - AI assistant tailored for engineers Whether you're working with Siemens, Allen-Bradley, or other PLC systems, PLC AI Assistant helps you save time and work more efficiently.
Screenshots
Verdict
The clearest difference is price: PLC Assistance at Free against EngineerCalc's $1.99. PLC Assistance also leads on update cadence (weekly vs every 60 months). EngineerCalc's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.6). On ads and in-app purchases 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
PLC Assistance is free to download; EngineerCalc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
EngineerCalc ships an update every 60 months, PLC Assistance weekly. The most recent releases landed on September 15, 2026 and August 9, 2026 respectively.
| Parameter | EngineerCalc | PLC Assistance |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | — | 5.0 (45 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 45 — better |
| Update frequency | Every 60 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 10 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | oskari saarinen | Zhihao Wang |
In-app purchases
EngineerCalc
No in-app purchases
PLC Assistance
No in-app purchases





