Perfboard vs Resistor color codes calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Resistor color band utility
- Resistor and capacitor calculators
- Voltage divider calculator
- LED limiting resistor calculator
- Ohm's law calculator
- ASCII table
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Perfboard sells 1 one-off in-app purchase. Resistor color codes calc asks for nothing beyond the download.
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.
| Parameter | Perfboard | Resistor color codes calc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 91.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 — better | — |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 7.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 10 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Soft Dorothy LLC | ALG Software Lab |
Customer experience
Perfboard
Resistor color codes calc
In-app purchases
Perfboard
- Perfboard Professional Suite$1.99
Resistor color codes calc
No in-app purchases


