Comparison

Resistor Tools vs Electrical Calculation Tools

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

Head to head
About

Resistor Tools

This utility app provides a suite of tools for calculating and determining resistor values. It assists hobbyists and engineers with series, parallel, and voltage divider calculations, as well as inverting amplifier gain.

Highlights
  • Series and parallel resistor calculation
  • Resistor combination finder
  • Voltage divider ratio and value calculation
  • Inverting amplifier gain calculation
  • Save combinations to CSV
Features
Read full description

This app is a collection of resistor calculators. It is suitable for hobbyist or electronic engineer. * Calculate resistance of two resistors in series or parallel * Find out combinations of two resistors in series/parallel making a desired resistance * Calculate ratio of R1/R2 and voltage divider * Find out resistor values of making voltage divider ratio * Find out resistor values of making inverting amplifier gain * Save combination values in CSV file

About

Electrical Calculation Tools

Features
Read full description

Mobile Electrician Calculator is a powerful and easy-to-use tool designed for electricians, electrical engineers, students, and anyone working with electrical systems. This app brings essential electrical formulas and calculations right to your mobile device—making work faster, more accurate, and more convenient. Whether you're troubleshooting, designing circuits, or estimating power usage, the app offers precise calculators to save time and reduce errors. Key Tools Included: Ohm’s Law Calculator Quickly calculate voltage, current, resistance, or power with simple input fields. LC Resonance Calculator Find resonant frequency, inductance, and capacitance for AC circuits with accuracy. Delta–Y (Wye) Transformer Conversion Convert between Delta and Wye configurations in seconds—perfect for three-phase systems. Electrical Energy Calculator Estimate energy usage and cost of appliances for better planning and budgeting. Current Density Calculator Calculate current per unit area to select the right conductor size and prevent overheating. Designed for speed, accuracy, and convenience, Mobile Electrician Calculator is an essential tool for fieldwork, classroom learning, and electrical design. With its user-friendly interface and multiple built-in calculators, it simplifies complex math and helps users complete jobs more efficiently.

Screenshots

Resistor Tools4 screens
Electrical Calculation Tools4 screens

Verdict

The call

The clearest difference is price: Resistor Tools at Free against Electrical Calculation Tools's $1.99. Resistor Tools also leads on update cadence (every 2 months vs every 5 months). Electrical Calculation Tools's advantage is in-app purchases (none vs 1). On ads, 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

Resistor Tools is free to download; Electrical Calculation Tools costs $1.99 up front. Resistor Tools sells 1 one-off in-app purchase. Electrical Calculation Tools asks for nothing beyond the download.

UpkeepUpdate frequency

Resistor Tools ships an update every 2 months, Electrical Calculation Tools every 5 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Resistor Tools versus Electrical Calculation Tools: the parameters behind the verdict, then further details
ParameterResistor ToolsElectrical Calculation Tools
PriceFree — better$1.99
Rating5.0 (10 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings10 — better—
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size4 MB37 MB
Age rating4+4+
DeveloperSiu Yuen HoKantaben Gorasiya

In-app purchases

1 purchases

Resistor Tools

One-time1
  • Unlock pro feature$0.99
None

Electrical Calculation Tools

No in-app purchases

Questions

Is Resistor Tools free?
Resistor Tools is free to download, with in-app purchases available.
Is Electrical Calculation Tools free?
Electrical Calculation Tools costs $1.99, with no in-app purchases.
Do Resistor Tools or Electrical Calculation Tools have ads?
Neither Resistor Tools nor Electrical Calculation Tools shows ads.
Which is updated more often, Resistor Tools or Electrical Calculation Tools?
Resistor Tools ships an update every 2 months, and Electrical Calculation Tools every 5 months. Most recently, Resistor Tools was updated on October 21, 2026 and Electrical Calculation Tools on October 24, 2026.

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