Comparison

Voltage Regulator vs Tenio

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

Tenio

This app provides a suite of calculators and converters for electronics enthusiasts, students, and makers. It helps users quickly solve circuit tasks, decode component markings, and calculate values for resistors and capacitors, speeding up project development.

Highlights
  • Resistor color code calculator
  • SMD resistor code converter
  • LED resistor calculator
  • Series & parallel resistor calculator
  • SMD capacitor code calculator
  • Series & parallel capacitor calculator
Features
Read full description

Tenio: Electronics Toolkit Lab is a practical set of calculators and converters built for makers, students, engineers, and electronics enthusiasts. Quickly solve common circuit tasks, decode component markings, and speed up your projects—right from your phone. Key Features • Resistor Color Code → Value (and Value → Color Code) • SMD Resistor Code → Resistance • LED Resistor Calculator (ideal resistor for your LED circuit) • Series & Parallel Resistor Calculator • Trimpot Code ↔ Resistance Converter • SMD Capacitor Code → Capacitance • Series & Parallel Capacitor Calculator • Capacitor Code ↔ Capacitance Converter Whether you’re prototyping on a breadboard, working on Arduino projects, studying for exams, or designing real circuits—Tenio helps you calculate faster and build with confidence.

Screenshots

Voltage Regulator4 screens
Tenio4 screens

Verdict

The call

The clearest difference is in-app purchases: Tenio at none against Voltage Regulator's 1. Tenio also leads on rating (5.0 vs 4.8) and update cadence (every 4 months vs every 9 months). Voltage Regulator's advantage is iOS requirement (12.0 vs 15.0). On price, ratings volume, 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

Both are free to download. Voltage Regulator sells 1 one-off in-app purchase. Tenio asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Tenio holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

UpkeepUpdate frequency

Voltage Regulator ships an update every 9 months, Tenio every 4 months. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

Scorecard5 real differences · 5 level
Voltage Regulator versus Tenio: the parameters behind the verdict, then further details
ParameterVoltage RegulatorTenio
PriceFreeFree
Rating4.8 (5 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings5 — better2
Update frequencyEvery 9 monthsEvery 4 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size3 MB7 MB
Age rating4+4+
DeveloperSiu Yuen HoSamuel Rodas Aroche

Customer experience

Voltage Regulator

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Tenio

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Voltage Regulator

One-time1
  • Unlock Pro features$1.99
None

Tenio

No in-app purchases

Questions

Is Voltage Regulator free?
Voltage Regulator is free to download, with in-app purchases available.
Is Tenio free?
Tenio is free to download, with no in-app purchases.
Which has better reviews, Voltage Regulator or Tenio?
Tenio is rated higher. Voltage Regulator averages 4.8 out of 5 from 5 ratings, while Tenio averages 5.0 from 2 ratings.
Do Voltage Regulator or Tenio have ads?
Neither Voltage Regulator nor Tenio shows ads.
Which is updated more often, Voltage Regulator or Tenio?
Voltage Regulator ships an update every 9 months, and Tenio every 4 months. Most recently, Voltage Regulator was updated on October 10, 2026 and Tenio on October 17, 2026.

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