# Cardot2 vs Resistor Calc+

The clearest difference is ads: Cardot2 at none against Resistor Calc+'s shown. Cardot2 also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (8.0 vs 13.0). On price, in-app purchases and device support there is nothing between them.

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

Cardot2 ships an update fortnightly, Resistor Calc+ every 2 months. The most recent releases landed on September 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Cardot2 | Resistor Calc+ |
| --- | --- | --- |
| 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 | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | — | Ad-supported |
| Size | 68 MB | 6 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [文 肖](https://appshunter.io/developer/1454669020) | [EONSOFT](https://appshunter.io/developer/899851112) |

## What reviewers say

### Cardot2

[App page](https://appshunter.io/ios/app/cardot2/id1439096014)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Cardot2 free?

Cardot2 is free to download, with no in-app purchases.

### Is Resistor Calc+ free?

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

### Do Cardot2 or Resistor Calc+ have ads?

Resistor Calc+ shows ads; Cardot2 does not.

### Which is updated more often, Cardot2 or Resistor Calc+?

Cardot2 ships an update fortnightly, and Resistor Calc+ every 2 months. Most recently, Cardot2 was updated on September 18, 2026 and Resistor Calc+ on October 7, 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.*