# Resistor Tools vs Electronic Component Codes

The clearest difference is review sentiment: Resistor Tools at 75% against Electronic Component Codes's 0%. Resistor Tools also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.0). Electronic Component Codes's advantage is in-app purchases (none vs 1). On price, update cadence and device support there is nothing between them.

Both are free to download. Resistor Tools sells 1 one-off in-app purchase. Electronic Component Codes asks for nothing beyond the download.

Resistor Tools ships an update every 2 months, Electronic Component Codes every 6 weeks. The most recent releases landed on September 24, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Resistor Tools | Electronic Component Codes |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 4 MB | 9 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## 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 |


### Electronic Component Codes

[App page](https://appshunter.io/ios/app/electronic-component-codes/id1670579756)

Quickly identify electronic component values using color codes and SMD markings. This utility supports resistors, capacitors, and inductors, offering detailed explanations and standard value charts.

**Highlights:** Resistor color code calculator, SMD resistor code lookup, Capacitor code identification, Inductor color code guide, E-series value charts, Detailed help sections

**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 Electronic Component Codes free?

Electronic Component Codes is free to download, with no in-app purchases.

### Do Resistor Tools or Electronic Component Codes have ads?

Electronic Component Codes shows ads; Resistor Tools does not.

### Which is updated more often, Resistor Tools or Electronic Component Codes?

Resistor Tools ships an update every 2 months, and Electronic Component Codes every 6 weeks. Most recently, Resistor Tools was updated on September 24, 2026 and Electronic Component Codes on September 16, 2026.

---

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