# Resistor Brain — Look at resistors in a new way

> Camera-based resistor identifier and decoder using a neural network. (iPhone/iPad app by TOYSPRING.)

- Source: https://appshunter.io/ios/app/resistor-brain/id1671579246 (this page in markdown: same URL + `.md`)
- Developer: [TOYSPRING](https://appshunter.io/developer/430948595)
- Category: Reference, Education
- Price: Free with in-app purchases
- Rating: 3.00/5 from 2 App Store ratings · 3 written reviews indexed
- Age rating: 12+
- Requires: iOS 11.2 · 27 MB
- Languages: American English, Polish
- Released: 2024-08-20
- Data updated: 2026-08-30
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/resistor-brain/id1671579246/reviews.md

## What is Resistor Brain?

Join the Resistance - "Resistor Brain" changes the way you look at resistors!
#1 Lifestyle app in the alternate universe ruled by electrical engineers!

But seriously, the application just detects resistors and decodes their resistance from color stripes using camera and a specially trained neural network. In case the detection is not always accurate you also get some special effects to convince you it is a cool app after all. Have fun :-)

Detection accuracy depends on the lighting conditions and the background environment. Flashlight is better than low light but diffused light is usually better than flashlight.
Currently the application is trained to recognize 3- and 4-stripe resistors.
"Inside Brain" does not do anything productive but is included as a curiosity. Here you can see how the input information changes while traveling through various processing stages in the neural network.

## Key features

- Resistor detection via camera
- Color stripe decoding
- Neural network processing
- 3- and 4-stripe resistor recognition
- "Inside Brain" visualization

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Generous Tip | $2.99 | one-time |
| Enormous Tip | $6.99 | one-time |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/resistor-brain/id1671579246/reviews.md

### 5/5 — Super App

*2026-05-14*

Hilft mir sehr, da ich rot-grün-farbenblind bin.

### 1/5 — Won’t focus

*2025-04-04*

On my 14 pro this app will not autofocus so it never reads the resistance values. Can’t find a way to manually focus either.

### 5/5 — Love

*2025-01-09*

Love this developer, sincerely hoping every day of my life that ol’ Sz will one day return to fix the Bike or Die game for ios.  Talk about a good game, I often wonder if he was aware of the fact that the players of the game were ready and willing to outright purchase the rights to it from him if ever we could get in touch with him… if you are reading this SZ, make a post on the old forum, there are still Bike a’holics out there wishing we could play again, who would pay money to do so.

Hope you are well!
-Mr.Pickle

## Frequently asked questions about Resistor Brain

### How accurate is Resistor Brain at detecting resistors?

Detection accuracy depends on lighting conditions and background. Diffused light is generally better than a flashlight. The app is trained to recognize 3- and 4-stripe resistors.

### What types of resistors can Resistor Brain identify?

Currently, Resistor Brain is trained to recognize resistors with 3 and 4 color stripes. It decodes their resistance values from these bands.

### Does Resistor Brain have ads?

No, Resistor Brain does not contain advertisements. It is a free app with optional in-app purchases.

### What devices does Resistor Brain support?

Resistor Brain is available for iPhone, iPad, and iPod devices. It requires iOS.

### What is the "Inside Brain" feature in Resistor Brain?

The "Inside Brain" feature is a curiosity that shows how input information changes as it travels through the neural network's processing stages.

### What is the age rating for Resistor Brain?

Resistor Brain has an age rating of 12+, making it suitable for teenagers and older users interested in electronics.

### How often is Resistor Brain updated?

Resistor Brain was last updated on August 21, 2024, with version 1.0.1. This indicates recent development and potential for future improvements.

### What are the in-app purchases for Resistor Brain?

The provided data indicates that Resistor Brain has in-app purchases, though specific details about what these purchases unlock are not detailed in the description.

## Version history (last 2 releases)

### 1.0.1 — 2024-08-21

- Serious bug fixed: version 1.0 crashed on entering the "Inside Brain" view
- Minor correction: The icon label is now "Resistor Brain" (with space), matching the actual application name in the AppStore

### 1.0 — 2024-08-20

No release notes.

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All apps by TOYSPRING: https://appshunter.io/developer/430948595

## Related topics

[resistor scanner](https://appshunter.io/ios/topics/resistor-scanner) · [resistor](https://appshunter.io/ios/topics/resistor)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*