# Keltron AIR vs AI Resistor Color Code Scanner

The clearest difference is in-app purchases: Keltron AIR at none against AI Resistor Color Code Scanner's 1. Keltron AIR also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.2). AI Resistor Color Code Scanner's advantage is update cadence (every 5 weeks vs every 3 months). On price and ads there is nothing between them.

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

Keltron AIR ships an update every 3 months, AI Resistor Color Code Scanner every 5 weeks. The most recent releases landed on October 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Keltron AIR | AI Resistor Color Code Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.7 (3 ratings)](https://appshunter.io/ios/app/ai-resistor-color-code-scanner/id6748325846/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 163 MB |
| Requires iOS | **15.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Keltront IoT Corporation](https://appshunter.io/developer/1786619980) | [Andrew Ausonio](https://appshunter.io/developer/1697652973) |

## What reviewers say

### Keltron AIR

[App page](https://appshunter.io/ios/app/keltron-air/id6739707652)

**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 Keltron AIR free?

Keltron AIR 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.

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

Neither Keltron AIR nor AI Resistor Color Code Scanner shows ads.

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

Keltron AIR ships an update every 3 months, and AI Resistor Color Code Scanner every 5 weeks. Most recently, Keltron AIR was updated on October 1, 2026 and AI Resistor Color Code Scanner on October 24, 2026.

---

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