# Ohmly vs Resistor color decoder

The clearest difference is ads: Ohmly at none against Resistor color decoder's shown. Resistor color decoder's advantage is update cadence (every 9 days vs every 3 weeks) and iOS requirement (17.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ohmly ships an update every 3 weeks, Resistor color decoder every 9 days. The most recent releases landed on July 30, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Ohmly | Resistor color decoder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Size | 7 MB | 6 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Adam Wilkie](https://appshunter.io/developer/893612520) | [Michal Pajdak](https://appshunter.io/developer/1794089424) |

## What reviewers say

### Ohmly

[App page](https://appshunter.io/ios/app/ohmly-electrical-calculator/id6447774551)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Resistor color decoder

[App page](https://appshunter.io/ios/app/resistor-color-decoder/id6744559438)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ohmly free?

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

### Is Resistor color decoder free?

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

### Do Ohmly or Resistor color decoder have ads?

Resistor color decoder shows ads; Ohmly does not.

### Which is updated more often, Ohmly or Resistor color decoder?

Ohmly ships an update every 3 weeks, and Resistor color decoder every 9 days. Most recently, Ohmly was updated on July 30, 2026 and Resistor color decoder on September 9, 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.*