# Resistor Plus vs Amatrol eLearning

The clearest difference is price: Amatrol eLearning at Free against Resistor Plus's $2.99. Amatrol eLearning also leads on update cadence (monthly vs every 20 months) and iOS requirement (13.0 vs 16.6). On review sentiment, ads, in-app purchases and device support there is nothing between them.

Amatrol eLearning is free to download; Resistor Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Resistor Plus ships an update every 20 months, Amatrol eLearning monthly. The most recent releases landed on October 2, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Resistor Plus | Amatrol eLearning |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[2.2 (6 ratings)](https://appshunter.io/ios/app/amatrol-elearning/id1629718364/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 72 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Amatrol, Inc.](https://appshunter.io/developer/966650854) |

## What reviewers say

### Resistor Plus

[App page](https://appshunter.io/ios/app/resistor-plus/id500615686)

Easily calculate resistor values and tolerance using color codes. Simply select the colors for each band, and the app instantly displays the resistance in ohms. Save your results with screenshots for future reference.

**Highlights:** Resistor color code calculation, Tolerance calculation, Instant results display, Copy result functionality, Screenshot capability, Works on iPhone and iPad, Ad-free and private

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

**In-app purchases:** none


### Amatrol eLearning

[App page](https://appshunter.io/ios/app/amatrol-elearning/id1629718364)

Access a vast library of technical training courses on your mobile device. This comprehensive curriculum covers foundational to advanced industrial topics with interactive multimedia content designed for various learning styles. Requires an active subscription through an organization or school.

**Highlights:** Access technical training curriculum, Hundreds of courses available, Thousands of hours of training, Covers basic to advanced industrial topics, Competency-based instructional design, Interactive multimedia format

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Resistor Plus free?

Resistor Plus costs $2.99, with no in-app purchases.

### Is Amatrol eLearning free?

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

### Do Resistor Plus or Amatrol eLearning have ads?

Neither Resistor Plus nor Amatrol eLearning shows ads.

### Which is updated more often, Resistor Plus or Amatrol eLearning?

Resistor Plus ships an update every 20 months, and Amatrol eLearning monthly. Most recently, Resistor Plus was updated on October 2, 2026 and Amatrol eLearning on September 22, 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.*