Comparison

Voltage Regulator vs Electronic Devices Quiz

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Voltage Regulator

Calculate resistor combinations for adjustable voltage regulators. This tool helps electronics hobbyists and professionals determine desired output voltages and resistor values. Results can be exported and shared easily.

Highlights
  • Adjustable voltage regulator support
  • Calculate resistor combinations
  • Determine resistor values
  • Export results to CSV
  • Share CSV via iCloud/AirDrop
Features
Read full description

This app is a voltage regulator calculator. It is is suitable for electronics hobbyist, electronic engineers or professionals. Features * Support 3-terminals adjustable voltage regulators * To find out combinations of 2 resistors making a desired output voltage * Calculate resistor values / output voltage * Export results to CSV file * Share CSV file to iCloud Drive (For iOS8 or later) * Share CSV file via AirDrop (For iOS7 or later) Feature in PRO only * Calculate thermal resistance of heatsink * Selectable 1%, 5% resistors * No ads * No limitations

About

Electronic Devices Quiz

Features
Read full description

Electronic devices quiz app with free download to install complete electronics app (iOS) to practice 800+ electronics devices quiz based MCQs. "Electronic Devices Quiz" app with trivia questions and answers for engineering college students to download electronic devices MCQs with self-assessment tests. "Electronic Devices Notes" learning app with answers key helps to practice test questions for online virtual classroom exam on iOS smartphones. Complete electronic devices quiz app for online degree programs covers basic and advance engineering school course with trivia quizzes. "Electronic Devices Revision" app, a quick study guide for electronics engineering students is an educational tool for beginners' learning and distance education with electronics textbook course as: Chapter 1: Bipolar junction transistors quiz Chapter 2: BJT amplifiers quiz Chapter 3: Diode applications quiz Chapter 4: FET amplifiers quiz Chapter 5: Field effect transistors quiz Chapter 6: Oscillators quiz Chapter 7: Programmable analog arrays quiz Chapter 8: Semiconductor basics quiz Chapter 9: Special purpose diodes quiz Chapter 10: Transistor bias circuits quiz Chapter 11: Types and characteristics of diodes quiz Download "Bipolar Junction Transistors Quiz" app to install revision notes with MCQs: Transistor characteristics and parameters, transistor structure, collector characteristic curve, derating power, maximum transistors rating, transistor as an amplifier, and transistor as switch. Download "BJT Amplifiers Quiz" app to install revision notes with MCQs: Amplifier operation, common base amplifier, common collector amplifier, common emitter amplifier, multistage amplifiers circuit, multistage amplifiers theory, and transistor AC equivalent circuits. Download "FET Amplifiers Quiz" app to install revision notes with MCQs: FET amplification, common drain amplifier, common gate amplifier, and common source amplifier. Download "Field Effect Transistors Quiz" app to install revision notes with MCQs: Introduction to FETs, JFET characteristics, JFET biasing, JFET characteristics and parameters, junction gate field effect transistor, metal oxide semiconductor field effect transistor, MOSFET biasing, MOSFET characteristics, and parameters. Download "Oscillators Quiz" app to install revision notes with MCQs: Oscillators with LC feedback circuits, oscillators with RC feedback circuits, 555 timer as oscillator, feedback oscillator principles, introduction of 555 timer, introduction to oscillators, LC feedback circuits and oscillators, RC feedback circuits and oscillators, and relaxation oscillators. Download "Semiconductor Basics Quiz" app to install revision notes with MCQs: Types of semiconductors, conduction in semiconductors, n-type and p-type semiconductors, atomic structure, calculation of electrons, charge mobility, covalent bond, energy bands, energy gap, Hall Effect, and intrinsic concentration. Download "Special Purpose Diodes Quiz" app to install revision notes with MCQs: Laser diode, optical diodes, pin diode, current regulator diodes, photodiode, step recovery diode, temperature coefficient, tunnel diode, Zener diode applications, Zener diode: basic operation and applications, Zener equivalent circuit, Zener power dissipation, and derating. Download "Transistor Bias Circuits Quiz" app to install revision notes with MCQs: Bias methods, DC operating points, and voltage divider bias. Download "Types and Characteristics of Diodes Quiz" app to install revision notes with MCQs: Biasing a diode, characteristics curves, diode models, introduction to diodes, testing a diode, typical diodes, and voltage characteristics of diode. "Electronic Devices MCQ" app helps to solve electronics multiple choice questions from every chapter, comparing with answer key after every 10 random trivia quiz questions. Looking forward to provide best user experience through electronic devices application!

Screenshots

Voltage Regulator4 screens
Electronic Devices Quiz4 screens

Verdict

The call

The clearest difference is ads: Voltage Regulator at none against Electronic Devices Quiz's shown. Electronic Devices Quiz's advantage is update cadence (every 3 weeks vs every 9 months). On price, in-app purchases, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Voltage Regulator sells 1 one-off in-app purchase and Electronic Devices Quiz sells 7 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Voltage Regulator ships an update every 9 months, Electronic Devices Quiz every 3 weeks. The most recent releases landed on September 16, 2026 and September 7, 2026 respectively.

Scorecard2 real differences · 8 level
Voltage Regulator versus Electronic Devices Quiz: the parameters behind the verdict, then further details
ParameterVoltage RegulatorElectronic Devices Quiz
PriceFreeFree
Rating4.8 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 9 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.012.0
Further details — not scored
Size3 MB68 MB
Age rating4+4+
DeveloperSiu Yuen HoArshad Iqbal

In-app purchases

1 purchases

Voltage Regulator

One-time1
  • Unlock Pro features$1.99
7 purchases

Electronic Devices Quiz

Subscriptions4
  • 1 Month Package3 Days trial$4.991 Month
  • 3 Months Package7 Days trial$9.993 Months
  • 6 Months Package3 Days trial$14.996 Months
Show 1 more
  • 1 Year Package7 Days trial$19.991 Year
One-time3
  • 1500 Coins$0.99
  • 3500 Coins$1.99
  • 6000 Coins$2.99

Questions

Is Voltage Regulator free?
Voltage Regulator is free to download, with in-app purchases available.
Is Electronic Devices Quiz free?
Electronic Devices Quiz is free to download, with in-app purchases available.
Do Voltage Regulator or Electronic Devices Quiz have ads?
Electronic Devices Quiz shows ads; Voltage Regulator does not.
Which is updated more often, Voltage Regulator or Electronic Devices Quiz?
Voltage Regulator ships an update every 9 months, and Electronic Devices Quiz every 3 weeks. Most recently, Voltage Regulator was updated on September 16, 2026 and Electronic Devices Quiz on September 7, 2026.

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