# Resistor Calculator Lite vs Read A Res

The clearest difference is in-app purchases: Resistor Calculator Lite at none against Read A Res's 1. Resistor Calculator Lite also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.6). On price, update cadence and device support there is nothing between them.

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

Resistor Calculator Lite ships an update every 6 weeks, Read A Res every 2 months. The most recent releases landed on November 10, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Resistor Calculator Lite | Read A Res |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (34 ratings)](https://appshunter.io/ios/app/read-a-res/id1437744283/reviews)** |
| Number of ratings | — | **34** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 18 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marck Apps](https://appshunter.io/developer/561157787) | [Enes Akkus](https://appshunter.io/developer/1416782412) |

## What reviewers say

### Resistor Calculator Lite

[App page](https://appshunter.io/ios/app/resistor-calculator-lite/id567034416)

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

**In-app purchases:** none


### 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

**Features:** Vision Pro support

**In-app purchases (1)**

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


## Frequently asked questions

### Is Resistor Calculator Lite free?

Resistor Calculator Lite is free to download, with no in-app purchases.

### Is Read A Res free?

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

### Do Resistor Calculator Lite or Read A Res have ads?

Read A Res shows ads; Resistor Calculator Lite does not.

### Which is updated more often, Resistor Calculator Lite or Read A Res?

Resistor Calculator Lite ships an update every 6 weeks, and Read A Res every 2 months. Most recently, Resistor Calculator Lite was updated on November 10, 2026 and Read A Res on November 11, 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.*