Electronics Reference Toolkit vs TrueOhm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electronics Reference Toolkit
This app provides a comprehensive suite of tools for electronics calculations and reference. It includes calculators for resistors, LEDs, capacitors, and voltage dividers, along with a unit converter and transistor database. Designed for speed and offline use, it's ideal for students, hobbyists, and engineers.
- Resistor Calculator (4/5 band)
- Ohm's Law Calculator
- LED Resistor Calculator
- Capacitor Decoder
- Voltage Divider Calculator
- Unit Converter
- Transistor Reference
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ElecKit is a lightweight electronics toolkit built for fast lookups and quick calculations—perfect for students, hobbyists, and engineers. Tools included - Resistor Calculator (4/5 band) + tolerance & range - Ohm’s Law (V/I/R/P) - LED Resistor Calculator (Vs, Vf, If) - Capacitor Decoder (3-digit & EIA codes) - Voltage Divider (2 or 3 resistors) - RC/RL Time Constant with charging curve & key points (1τ…5τ) - Unit Converter (Ω, F, H, Hz + prefixes) - Battery Life Estimator (battery type, load current, duty cycle) - Transistor Reference (NPN, PNP, MOSFET) with fast search & filters Notes * Designed for speed, clean UI, and offline use. * Reference values may vary by manufacturer—always confirm with the datasheet.
TrueOhm
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TrueOhm is a fast, free electrical calculator built for electricians, apprentices, and engineers. Five powerful calculators in one app: • Ohm's Law Wheel — Enter any two of voltage, current, resistance, or power and instantly solve the other two. • AC Power — Calculate real power, apparent power, current, and voltage for single-phase and three-phase systems. • Power Triangle — Solve the relationship between kW, kVAR, kVA, power factor, and phase angle. • Energy Cost — Estimate energy consumption and cost for any load over any run time. • Efficiency — Calculate motor or system efficiency from input and output power. Every calculation shows its work — tap "How this was calculated" to see the exact formulas and substitutions used. Built-in sanity checks warn you about impossible values without blocking your workflow. Designed for the field. No ads. No subscriptions. Just fast, accurate calculations from 509 Electric.
Screenshots
Verdict
The clearest difference is device support: TrueOhm at 3 against Electronics Reference Toolkit's 1. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Electronics Reference Toolkit | TrueOhm |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (12 ratings) — better | — |
| Number of ratings | 12 — better | — |
| Update frequency | Fortnightly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Ha Do Thi Thu | Nicole Nalley |
In-app purchases
Electronics Reference Toolkit
No in-app purchases
TrueOhm
No in-app purchases
Questions
Is Electronics Reference Toolkit free?
Is TrueOhm free?
Do Electronics Reference Toolkit or TrueOhm have ads?
Other comparisons
