Comparison

Voltage Regulator vs Digital Electronics Pro

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

Digital Electronics Pro

Features
Read full description

Digital Electronics Pro is a powerful reference tool for electronics students, engineers, and hobbyists. Whether you're just starting out or already experienced, this app helps you design, learn, and prototype with ease. It combines essential theory with practical guides and covers key digital electronics topics, including logic gates, counters, flip-flops, and IC reference data. The app also features detailed information on popular digital IC families such as TTL 7400 and CMOS 4000 series. Perfect for quick learning or as a companion for working on electronic circuits and digital systems. Available in 14 Languages: • English, French, German, Indonesian, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian, and Vietnamese — study in your native language! The Pro version offers additional features, including: • Favourites feature: Allows users to save topics and access them quickly. • Full-text search: Enables quick navigation across all app content. The app includes detailed tutorials and references for: • Basic logic • Families of digital chips • Universal logic elements • Elements with Schmitt trigger • Buffer elements • Flip-flops • Registers • Counters • Adders • Multiplexers • Decoders and demultiplexers • 7-segment LED drivers • Encryptors • Digital comparators • 7400 series ICs • 4000 series ICs • Astable CMOS Oscillators • Monostable CMOS Oscillators • Bistable CMOS Oscillators • Gated CMOS Oscillators • TTL Oscillators Whether you're learning, teaching, or building real-world digital circuits, Digital Electronics Pro is your trusted companion every step of the way.

Screenshots

Voltage Regulator4 screens
Digital Electronics Pro4 screens

Verdict

The call

The clearest difference is price: Voltage Regulator at Free against Digital Electronics Pro's $4.99. Voltage Regulator also leads on iOS requirement (12.0 vs 16.0). Digital Electronics Pro's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 9 months). On ads 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

CostPrice · In-app purchases · Ads · Monetization

Voltage Regulator is free to download; Digital Electronics Pro costs $4.99 up front. Voltage Regulator sells 1 one-off in-app purchase. Digital Electronics Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Voltage Regulator ships an update every 9 months, Digital Electronics Pro every 2 months. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 6 level
Voltage Regulator versus Digital Electronics Pro: the parameters behind the verdict, then further details
ParameterVoltage RegulatorDigital Electronics Pro
PriceFree — better$4.99
Rating4.8 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 9 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.0 — better16.0
Further details — not scored
Size3 MB21 MB
Age rating4+4+
DeveloperSiu Yuen HoALG Software Lab SIA

In-app purchases

1 purchases

Voltage Regulator

One-time1
  • Unlock Pro features$1.99
None

Digital Electronics Pro

No in-app purchases

Questions

Is Voltage Regulator free?
Voltage Regulator is free to download, with in-app purchases available.
Is Digital Electronics Pro free?
Digital Electronics Pro costs $4.99, with no in-app purchases.
Do Voltage Regulator or Digital Electronics Pro have ads?
Neither Voltage Regulator nor Digital Electronics Pro shows ads.
Which is updated more often, Voltage Regulator or Digital Electronics Pro?
Voltage Regulator ships an update every 9 months, and Digital Electronics Pro every 2 months. Most recently, Voltage Regulator was updated on October 5, 2026 and Digital Electronics Pro on October 12, 2026.

Other comparisons