# Read A Res vs Resistor Calc+

The clearest difference is review sentiment: Resistor Calc+ at 67% against Read A Res's 0%. Resistor Calc+ also leads on rating (5.0 vs 4.4) and in-app purchases (none vs 1). Read A Res's advantage is ratings volume (34 vs 5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Read A Res sells 1 one-off in-app purchase. Resistor Calc+ asks for nothing beyond the download.

Resistor Calc+ holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Read A Res has 34 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 0% of Read A Res's written reviews are positive against 67% of Resistor Calc+'s.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Read A Res | Resistor Calc+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (34 ratings)](https://appshunter.io/ios/app/read-a-res/id1437744283/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/resistor-calc-plus/id1441211200/reviews)** |
| Number of ratings | **34** | 5 |
| Positive reviews | 0.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 18 MB | 6 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Enes Akkus](https://appshunter.io/developer/1416782412) | [EONSOFT](https://appshunter.io/developer/899851112) |

## What reviewers say

### Read A Res

[App page](https://appshunter.io/ios/app/read-a-res/id1437744283)

Easily read and convert electronic component resistances. Input color codes or SMD values, and the application handles the rest. Offers a straightforward interface for quick calculations.

**Highlights:** Resistance reading, Resistance conversion, Color code input, SMD value input, Simple interface

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Resistor Calc+

[App page](https://appshunter.io/ios/app/resistor-calc-plus/id1441211200)

This utility helps you determine the resistance value of resistors by interpreting their colored bands. It supports 3, 4, 5, and 6 band resistors, visually displaying your selections and the calculated resistance and tolerance.

**Highlights:** Calculates resistance for 3-6 band resistors, Visual band color selection, Displays resistance and tolerance, Aids electronics configuration, User-friendly interface

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Read A Res free?

Read A Res is free to download, with in-app purchases available.

### Is Resistor Calc+ free?

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

### Which has better reviews, Read A Res or Resistor Calc+?

Resistor Calc+ is rated higher. Read A Res averages 4.4 out of 5 from 34 ratings, while Resistor Calc+ averages 5.0 from 5 ratings.

### Do Read A Res or Resistor Calc+ have ads?

Both Read A Res and Resistor Calc+ show ads.

### Which is updated more often, Read A Res or Resistor Calc+?

Read A Res ships an update every 2 months, and Resistor Calc+ every 2 months. Most recently, Read A Res was updated on October 24, 2026 and Resistor Calc+ on October 24, 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.*