# Resistor Calc+ vs Frese T650

The clearest difference is ads: Frese T650 at none against Resistor Calc+'s shown. Resistor Calc+'s advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Resistor Calc+ ships an update every 2 months, Frese T650 every 6 weeks. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Resistor Calc+ | Frese T650 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/resistor-calc-plus/id1441211200/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 41 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [SV Technics](https://appshunter.io/developer/1384360031) |

## What reviewers say

### Resistor Calc+

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

Easily determine resistance values from colored bands on resistors. Supports 3 to 6 band configurations with a visual representation of your selections. Ideal for electronics enthusiasts and hobbyists.

**Highlights:** 3, 4, 5, and 6 band resistor support, Visual band color selection, Displays resistance value and tolerance, Aids in electronics configuration

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


### Frese T650

[App page](https://appshunter.io/ios/app/frese-t650/id6793839383)

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

**In-app purchases:** none


## Frequently asked questions

### Is Resistor Calc+ free?

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

### Is Frese T650 free?

Frese T650 is free to download, with no in-app purchases.

### Do Resistor Calc+ or Frese T650 have ads?

Resistor Calc+ shows ads; Frese T650 does not.

### Which is updated more often, Resistor Calc+ or Frese T650?

Resistor Calc+ ships an update every 2 months, and Frese T650 every 6 weeks. Most recently, Resistor Calc+ was updated on November 3, 2026 and Frese T650 on October 27, 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.*