# Resistor Tools vs 抵抗チェッカー ～カラーコードと抵抗値から～

The clearest difference is in-app purchases: 抵抗チェッカー ～カラーコードと抵抗値から～ at none against Resistor Tools's 1. 抵抗チェッカー ～カラーコードと抵抗値から～ also leads on review sentiment (100% vs 75%) and iOS requirement (8.0 vs 12.0). Resistor Tools's advantage is ads (none vs shown) and update cadence (every 2 months vs every 6 months). On price and device support there is nothing between them.

Both are free to download. Resistor Tools sells 1 one-off in-app purchase. 抵抗チェッカー ～カラーコードと抵抗値から～ asks for nothing beyond the download.

Resistor Tools ships an update every 2 months, 抵抗チェッカー ～カラーコードと抵抗値から～ every 6 months. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Resistor Tools | 抵抗チェッカー ～カラーコードと抵抗値から～ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/resistor-tools/id826045228/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 4 MB | 14 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Yoshiaki Onishi](https://appshunter.io/developer/852893746) |

## What reviewers say

### Resistor Tools

[App page](https://appshunter.io/ios/app/resistor-tools/id826045228)

This utility app provides a suite of tools for calculating and determining resistor values. It assists hobbyists and engineers with series, parallel, and voltage divider calculations, as well as inverting amplifier gain.

**Highlights:** Series and parallel resistor calculation, Resistor combination finder, Voltage divider ratio and value calculation, Inverting amplifier gain calculation, Save combinations to CSV

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock pro feature | $0.99 | one-time |


### 抵抗チェッカー ～カラーコードと抵抗値から～

[App page](https://appshunter.io/ios/app/id1271197221)

Easily calculate resistance values from color codes or find color codes from resistance values. Supports 4-band and 5-band resistor types, providing quick and accurate results for electronic circuit design.

**Highlights:** Calculate resistance from color codes, Find color codes from resistance values, Supports 4-band resistors, Supports 5-band resistors, Displays multiple color code patterns, Quick and easy to use

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

**In-app purchases:** none


## Frequently asked questions

### Is Resistor Tools free?

Resistor Tools is free to download, with in-app purchases available.

### Is 抵抗チェッカー ～カラーコードと抵抗値から～ free?

抵抗チェッカー ～カラーコードと抵抗値から～ is free to download, with no in-app purchases.

### Do Resistor Tools or 抵抗チェッカー ～カラーコードと抵抗値から～ have ads?

抵抗チェッカー ～カラーコードと抵抗値から～ shows ads; Resistor Tools does not.

### Which is updated more often, Resistor Tools or 抵抗チェッカー ～カラーコードと抵抗値から～?

Resistor Tools ships an update every 2 months, and 抵抗チェッカー ～カラーコードと抵抗値から～ every 6 months. Most recently, Resistor Tools was updated on October 10, 2026 and 抵抗チェッカー ～カラーコードと抵抗値から～ on October 2, 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.*