Electronics Reference Toolkit vs Voltage Calculator
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.
Voltage Calculator
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Voltage Calculator is a fast, focused toolbox for everyday electronics work. Three calculators in one clean, dark interface give you instant answers while you type. KEY FEATURES • Series & parallel calculator: combine up to 15 resistors or capacitors and read the result in every common unit • LED series resistor: enter supply voltage, forward voltage and forward current to get the right resistor and its power rating • Built-in reference table of typical LED forward voltages • Voltage divider: calculate the output voltage, or find the missing resistor for a target output • Live circuit diagrams that show your values in place • Results update instantly in multiple units as you type • Available in 24 languages
Screenshots
Verdict
The clearest difference is device support: Voltage Calculator at 3 against Electronics Reference Toolkit's 1. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Electronics Reference Toolkit ships an update fortnightly, Voltage Calculator every 2 weeks. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.
| Parameter | Electronics Reference Toolkit | Voltage Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (7 ratings) — better | — |
| Number of ratings | 7 — better | — |
| Update frequency | Fortnightly — better | Every 2 weeks |
| 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 | 72 MB |
| Age rating | 4+ | 4+ |
| Developer | Ha Do Thi Thu | ESDEV Teknoloji |
In-app purchases
Electronics Reference Toolkit
No in-app purchases
Voltage Calculator
No in-app purchases
Questions
Is Electronics Reference Toolkit free?
Is Voltage Calculator free?
Do Electronics Reference Toolkit or Voltage Calculator have ads?
Which is updated more often, Electronics Reference Toolkit or Voltage Calculator?
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