Comparison

Resistance Calculator vs Resistor Code Calculators

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

Head to head
About

Resistance Calculator

Instantly calculate resistor resistance values from color codes (3-6 bands). Includes Ohm's Law and Watt's Law calculators for voltage, current, and power. Ideal for electronics enthusiasts and professionals.

Highlights
  • Decode resistor color codes
  • Supports 3-6 band resistors
  • Ohm's Law calculator
  • Watt's Law calculator
  • Calculate V, I, R, and P
  • Light and Dark themes
Read full description

Resistor Color Code to Ohms (Ω) is a reliable and easy-to-use electronics utility designed to help you quickly calculate resistance using standard Resistor color codes (3-band, 4-band, 5-band, or 6-band). Whether you are an electronics hobbyist, engineering student, or professional engineer, this app simplifies resistor identification and circuit calculations, saving time and reducing errors. With an intuitive interface, you can select the color bands of 3-band, 4-band, 5-band, or 6-band resistors and instantly view the calculated resistance value in ohms (Ω), along with tolerance and multiplier information. This makes it ideal for identifying resistors during circuit design, repair, prototyping, or learning electronics fundamentals. In addition to resistor color code decoding, the app includes a built-in Ohm’s Law and Watt’s Law calculator. Easily calculate voltage, current, resistance, and power by entering known values. This all-in-one approach removes the need for multiple tools and helps you perform essential electrical calculations accurately and efficiently. The app supports both Light and Dark themes, allowing you to choose a comfortable viewing experience in any environment. The clean layout and clear visual design ensure quick understanding and ease of use, even for beginners. Key Features: 1. Decode resistor color codes into accurate resistance values 2. Supports 3-band, 4-band, 5-band, and 6-band resistors 3. Built-in Ohm’s Law and Watt’s Law calculators 4. Calculate voltage, current, resistance, and power 5. Clean, intuitive interface for fast calculations 6. Light and Dark mode support Ideal for electronics hobbyists, students, technicians, and engineers Whether you are studying electronics, working on DIY projects, or designing professional circuits, Resistor Color Code to Ohms (Ω) is a practical and dependable tool you can rely on every day. Our companies vision is to create apps like this resistor color code calculator. We want to help electrical engineers and electricians in their every day work lives. If you have any feedback or app improvements ideas, please mail us at trothmatrixapps@gmail.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.trothmatrix.com/

About

Resistor Code Calculators

Features
Read full description

The one handy app for electrical engineering calculation. This app contains not only resistor color code and capacitor code calculators but also electrical filter, attenuator, rectifier, LC oscillator, RF, PCB trace, cable, Ohm's Law, skin effect, Lumen Candela conversion, Delta Y Conversion, and many other handy calculators.

Screenshots

Resistance Calculator4 screens
Resistor Code Calculators4 screens

Verdict

The call

The clearest difference is in-app purchases: Resistor Code Calculators at none against Resistance Calculator's 3. Resistor Code Calculators also leads on iOS requirement (13.4 vs 15.0). On price, update cadence, 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. Resistance Calculator sells 3 in-app purchases, starting at $0.49 per 7 days. Resistor Code Calculators asks for nothing beyond the download.

UpkeepUpdate frequency

Resistance Calculator ships an update every 5 months, Resistor Code Calculators every 7 months. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.

Scorecard2 real differences · 8 level
Resistance Calculator versus Resistor Code Calculators: the parameters behind the verdict, then further details
ParameterResistance CalculatorResistor Code Calculators
PriceFreeFree
Rating4.6 (9 ratings) — better
Positive reviews100.0% of reviews
Number of ratings9 — better
Update frequencyEvery 5 months — betterEvery 7 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.4 — better
Further details — not scored
Size13 MB6 MB
Age rating4+4+
DeveloperTROTHMATRIXKanta Kikubo

In-app purchases

3 purchases

Resistance Calculator

Subscriptions2
  • Weekly Premium2 Months trial$0.497 Days
  • Monthly Premium Subscription3 Months trial$1.491 Month
One-time1
  • Purchase Premium Version$12.99
None

Resistor Code Calculators

No in-app purchases

Questions

Is Resistance Calculator free?
Resistance Calculator is free to download, with in-app purchases available.
Is Resistor Code Calculators free?
Resistor Code Calculators is free to download, with no in-app purchases.
Do Resistance Calculator or Resistor Code Calculators have ads?
Both Resistance Calculator and Resistor Code Calculators show ads.
Which is updated more often, Resistance Calculator or Resistor Code Calculators?
Resistance Calculator ships an update every 5 months, and Resistor Code Calculators every 7 months. Most recently, Resistance Calculator was updated on September 9, 2026 and Resistor Code Calculators on September 17, 2026.

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