# Resistor vs AI Resistor Color Code Scanner

The clearest difference is rating: Resistor at 4.9 against AI Resistor Color Code Scanner's 3.0. Resistor also leads on in-app purchases (none vs 1) and ratings volume (17 vs 1). AI Resistor Color Code Scanner's advantage is update cadence (every 5 weeks vs every 9 months) and iOS requirement (17.2 vs 26.0). On price, ads and device support there is nothing between them.

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

Resistor holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: Resistor has 17 ratings behind it against 1, so its average is the more settled of the two.

Resistor ships an update every 9 months, AI Resistor Color Code Scanner every 5 weeks. The most recent releases landed on September 27, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Resistor | AI Resistor Color Code Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (17 ratings)](https://appshunter.io/ios/app/resistor-converter/id6446839759/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/ai-resistor-color-code-scanner/id6748325846/reviews) |
| Number of ratings | **17** | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 163 MB |
| Requires iOS | 26.0 | **17.2** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [Andrew Ausonio](https://appshunter.io/developer/1697652973) |

## 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


### AI Resistor Color Code Scanner

[App page](https://appshunter.io/ios/app/ai-resistor-color-code-scanner/id6748325846)

Instantly identify and calculate resistor values using your iPhone camera. This tool eliminates the need for manual color band reading and charts, offering quick results for engineers, hobbyists, and students. Save your scans and organize them into projects for efficient workflow.

**Highlights:** Instant camera scanning, Save and organize scans, Interactive color band editing, Supports 3-6 band resistors, Offline functionality, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | one-time |


## Frequently asked questions

### Is Resistor free?

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

### Is AI Resistor Color Code Scanner free?

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

### Which has better reviews, Resistor or AI Resistor Color Code Scanner?

Resistor is rated higher. Resistor averages 4.9 out of 5 from 17 ratings, while AI Resistor Color Code Scanner averages 3.0 from 1 ratings.

### Do Resistor or AI Resistor Color Code Scanner have ads?

Neither Resistor nor AI Resistor Color Code Scanner shows ads.

### Which is updated more often, Resistor or AI Resistor Color Code Scanner?

Resistor ships an update every 9 months, and AI Resistor Color Code Scanner every 5 weeks. Most recently, Resistor was updated on September 27, 2026 and AI Resistor Color Code Scanner on October 21, 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.*