# Perfboard vs Resistor color codes calc

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.

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 19, 2026 respectively.

## The numbers

| Metric | Perfboard | Resistor color codes calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/perfboard/id465951871/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 91.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 10 MB | 10 MB |
| Requires iOS | **7.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Soft Dorothy LLC](https://appshunter.io/developer/457535512) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Perfboard

[App page](https://appshunter.io/ios/app/perfboard/id465951871)

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:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Perfboard Professional Suite | $1.99 | one-time |


### Resistor color codes calc

[App page](https://appshunter.io/ios/app/resistor-color-codes-calc/id6443917752)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*