# Resistor Color Code Calc + vs Resistor Color Code Reader

The clearest difference is in-app purchases: Resistor Color Code Calc + at none against Resistor Color Code Reader's 1. Resistor Color Code Calc + also leads on update cadence (every 2 days vs every 4 weeks). Resistor Color Code Reader's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Resistor Color Code Reader sells 1 one-off in-app purchase. Resistor Color Code Calc + asks for nothing beyond the download.

Resistor Color Code Calc + ships an update every 2 days, Resistor Color Code Reader every 4 weeks. The most recent releases landed on October 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Resistor Color Code Calc + | Resistor Color Code Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 4 weeks |
| Size | 50 MB | 58 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [heekyung moon](https://appshunter.io/developer/6779193748) | [Ravinderjeet Dhillon](https://appshunter.io/developer/1896491671) |

## What reviewers say

### Resistor Color Code Calc +

[App page](https://appshunter.io/ios/app/resistor-color-code-calc-plus/id6790018644)

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

**In-app purchases:** none


### Resistor Color Code Reader

[App page](https://appshunter.io/ios/app/resistor-color-code-reader/id6799727676)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Workbench Tools | $3.99 | one-time |


## Frequently asked questions

### Is Resistor Color Code Calc + free?

Resistor Color Code Calc + is free to download, with no in-app purchases.

### Is Resistor Color Code Reader free?

Resistor Color Code Reader is free to download, with in-app purchases available.

### Do Resistor Color Code Calc + or Resistor Color Code Reader have ads?

Resistor Color Code Calc + shows ads; Resistor Color Code Reader does not.

### Which is updated more often, Resistor Color Code Calc + or Resistor Color Code Reader?

Resistor Color Code Calc + ships an update every 2 days, and Resistor Color Code Reader every 4 weeks. Most recently, Resistor Color Code Calc + was updated on October 17, 2026 and Resistor Color Code Reader on October 1, 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.*