# Resistor Reader vs Resistor Brain

The clearest difference is price: Resistor Brain at Free against Resistor Reader's $0.99. Resistor Brain also leads on update cadence (daily vs every 11 months) and iOS requirement (11.2 vs 13.0). Resistor Reader's advantage is rating (5.0 vs 3.0) and in-app purchases (none vs 3). On ratings volume, ads and device support there is nothing between them.

Resistor Brain is free to download; Resistor Reader costs $0.99 up front. Resistor Brain sells 3 one-off in-app purchases. Resistor Reader asks for nothing beyond the download.

Resistor Reader holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Resistor Reader ships an update every 11 months, Resistor Brain daily. The most recent releases landed on September 15, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Resistor Reader | Resistor Brain |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/resistor-reader/id1535269566/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/resistor-brain/id1671579246/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Daily** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 27 MB |
| Requires iOS | 13.0 | **11.2** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [JONOTHON CONE](https://appshunter.io/developer/1493556554) | [TOYSPRING](https://appshunter.io/developer/430948595) |

## What reviewers say

### Resistor Reader

[App page](https://appshunter.io/ios/app/resistor-reader/id1535269566)

Easily determine resistor values directly from your wrist. Select color bands using the Digital Crown for quick identification. Requires Watch OS 9.0 or higher.

**Highlights:** Identify resistor values, Digital Crown selection, Color band input, Watch-based utility

**In-app purchases:** none


### Resistor Brain

[App page](https://appshunter.io/ios/app/resistor-brain/id1671579246)

This app uses your device's camera and a neural network to identify resistors and decode their resistance values from color bands. It offers a unique perspective on electronic components and includes an "Inside Brain" feature to visualize the neural network's processing.

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

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

**In-app purchases (3)**

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


## Frequently asked questions

### Is Resistor Reader free?

Resistor Reader costs $0.99, with no in-app purchases.

### Is Resistor Brain free?

Resistor Brain is free to download, with in-app purchases available.

### Which has better reviews, Resistor Reader or Resistor Brain?

Resistor Reader is rated higher. Resistor Reader averages 5.0 out of 5 from 1 ratings, while Resistor Brain averages 3.0 from 2 ratings.

### Do Resistor Reader or Resistor Brain have ads?

Neither Resistor Reader nor Resistor Brain shows ads.

### Which is updated more often, Resistor Reader or Resistor Brain?

Resistor Reader ships an update every 11 months, and Resistor Brain daily. Most recently, Resistor Reader was updated on September 15, 2026 and Resistor Brain on September 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.*