# Resistor vs Pedal Builder

The clearest difference is price: Resistor at Free against Pedal Builder's $1.99. Resistor also leads on update cadence (every 9 months vs every 19 months). Pedal Builder's advantage is iOS requirement (16.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

Resistor is free to download; Pedal Builder costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Resistor ships an update every 9 months, Pedal Builder every 19 months. The most recent releases landed on September 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Resistor | Pedal Builder |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.9 (17 ratings)](https://appshunter.io/ios/app/resistor-converter/id6446839759/reviews)** | — |
| Number of ratings | **17** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 19 months |
| Monetization | Free | — |
| Size | 8 MB | 27 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [John Toms](https://appshunter.io/developer/591598841) |

## What reviewers say

### Resistor

[App page](https://appshunter.io/ios/app/resistor-converter/id6446839759)

Quickly calculate resistor values from color bands or SMD codes, and vice versa. This tool is ideal for electronics enthusiasts, students, and DIYers working with 4, 5, or 6-band resistors and various SMD codes. It functions offline and requires no registration.

**Highlights:** Calculate resistor values from color bands, Convert resistor values to color bands, Supports 4, 5, and 6-band resistors, Handles SMD codes (EIA-3, EIA-4, EIA-96), Works offline, No registration required

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Pedal Builder

[App page](https://appshunter.io/ios/app/pedal-builder/id6448482080)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Resistor free?

Resistor is free to download, with no in-app purchases.

### Is Pedal Builder free?

Pedal Builder costs $1.99, with no in-app purchases.

### Do Resistor or Pedal Builder have ads?

Neither Resistor nor Pedal Builder shows ads.

### Which is updated more often, Resistor or Pedal Builder?

Resistor ships an update every 9 months, and Pedal Builder every 19 months. Most recently, Resistor was updated on September 27, 2026 and Pedal Builder on October 7, 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.*