# Resistor vs ElectroScan AI

The clearest difference is in-app purchases: Resistor at none against ElectroScan AI's 3. ElectroScan AI's advantage is update cadence (every 2 weeks vs every 9 months) and iOS requirement (15.1 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. ElectroScan AI sells 3 one-off in-app purchases. Resistor asks for nothing beyond the download.

Resistor ships an update every 9 months, ElectroScan AI every 2 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Resistor | ElectroScan AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (19 ratings)](https://appshunter.io/ios/app/resistor-converter/id6446839759/reviews)** | — |
| Number of ratings | **19** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 8 MB | 43 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [Alberto Cortinas](https://appshunter.io/developer/1849410798) |

## 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


### ElectroScan AI

[App page](https://appshunter.io/ios/app/electroscan-ai-chip-scanner/id6754641007)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| package with 100 scans | $1.99 | one-time |
| package with 300 scans | $4.99 | one-time |
| package with 1000 scans | $9.99 | one-time |


## Frequently asked questions

### Is Resistor free?

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

### Is ElectroScan AI free?

ElectroScan AI is free to download, with in-app purchases available.

### Do Resistor or ElectroScan AI have ads?

Neither Resistor nor ElectroScan AI shows ads.

### Which is updated more often, Resistor or ElectroScan AI?

Resistor ships an update every 9 months, and ElectroScan AI every 2 weeks. Most recently, Resistor was updated on October 24, 2026 and ElectroScan AI on October 30, 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.*