Comparison

Perfboard vs Resistor color codes calc

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

Head to head
About

Perfboard

This reference app provides essential tools for electronics hobbyists. Calculate resistor and capacitor values, determine LED voltage drops, and access an ASCII table. It features a user-friendly interface and supports various iPhone models.

Highlights
  • Resistor color band utility
  • Resistor and capacitor calculators
  • Voltage divider calculator
  • LED limiting resistor calculator
  • Ohm's law calculator
  • ASCII table
Features
Read full description

A utility and reference for the electronics hobbyist. Contains: • resistor color band utility • resistor series calculator • resistor parallel calculator • voltage divider • capacitor code tool • capacitor tolerance reference • capacitor series calculator • capacitor parallel calculator • L.E.D. voltage drop reference • L.E.D. limiting resistor calculator • Ohm's law calculator (with unique "slide rule mode") • ASCII table. Retina display and iPhone 5 & 6 support. A beautiful user interface.

About

Resistor color codes calc

Instantly decode resistor color bands to find resistance, tolerance, and TCR. Also calculates series/parallel resistance and voltage dividers. Supports E-series validation and multiple languages.

Highlights
  • 3- to 6-band color code support
  • Resistance, tolerance, and TCR calculation
  • Value to color code conversion
  • E-series validation
  • Series and parallel resistor calculation
  • Voltage divider calculation
Features
Read full description

Resistor collar codes calc is a powerful tool for decoding and calculating resistor values using 3-, 4-, 5-, and 6-band color codes. Instantly get the resistance, tolerance, and temperature coefficient (TCR) based on the selected bands. The app also includes a code-to-value calculator, letting you enter a resistance value and see the matching color code. It verifies input against standard E-series values (E6 to E192) and suggests the closest standard resistor where needed. You can also calculate total resistance for series and parallel connections, as well as perform resistive voltage divider calculations — making this app ideal for circuit design and quick calculations. Key Features: • Supports 3-, 4-, 5-, and 6-band color codes • Calculates resistance, tolerance, and TCR • Enter values to find matching color bands • E-series validation and nearest standard suggestion • Series and parallel resistor calculator • Resistive voltage divider calculator The application supports multiple languages, including: English, French, German, Indonesian, Italian, Polish, Portuguese, Russian, Spanish, Turkish, and Ukrainian. Perfect for students, hobbyists, and electronics professionals alike.

Screenshots

Perfboard4 screens
Resistor color codes calc4 screens

Verdict

The call

The clearest difference is in-app purchases: Resistor color codes calc at none against Perfboard's 1. Resistor color codes calc also leads on update cadence (every 2 months vs every 6 months) and review sentiment (100% vs 92%). Perfboard's advantage is ads (none vs shown) and iOS requirement (7.1 vs 16.0). On price 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. Perfboard sells 1 one-off in-app purchase. Resistor color codes calc asks for nothing beyond the download.

UpkeepUpdate frequency

Perfboard ships an update every 6 months, Resistor color codes calc every 2 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

Scorecard6 real differences · 4 level
Perfboard versus Resistor color codes calc: the parameters behind the verdict, then further details
ParameterPerfboardResistor color codes calc
PriceFreeFree
Rating5.0 (6 ratings) — better—
Positive reviews91.7% of reviews100.0% of reviews — better
Number of ratings6 — better—
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS7.1 — better16.0
Further details — not scored
Size10 MB10 MB
Age rating4+4+
DeveloperSoft Dorothy LLCALG Software Lab

Customer experience

Perfboard

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews24 reviews
Positive91.7%
Neutral4.2%
Negative4.2%

Resistor color codes calc

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Perfboard

One-time1
  • Perfboard Professional Suite$1.99
None

Resistor color codes calc

No in-app purchases

Questions

Is Perfboard free?
Perfboard is free to download, with in-app purchases available.
Is Resistor color codes calc free?
Resistor color codes calc is free to download, with no in-app purchases.
Do Perfboard or Resistor color codes calc have ads?
Resistor color codes calc shows ads; Perfboard does not.
Which is updated more often, Perfboard or Resistor color codes calc?
Perfboard ships an update every 6 months, and Resistor color codes calc every 2 months. Most recently, Perfboard was updated on October 2, 2026 and Resistor color codes calc on October 1, 2026.

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