# A Complex Calc vs Resistor Calc+

The clearest difference is ads: A Complex Calc at none against Resistor Calc+'s shown. A Complex Calc also leads on update cadence (every 3 weeks vs every 2 months) and review sentiment (80% vs 67%). Resistor Calc+'s advantage is rating (5.0 vs 4.7). 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.

Resistor Calc+ holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 23 and 5 respectively. Written reviews complicate that: 80% of A Complex Calc's written reviews are positive against 67% of Resistor Calc+'s, so the app with the better star average is not the one people write more warmly about.

A Complex Calc ships an update every 3 weeks, Resistor Calc+ every 2 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | A Complex Calc | Resistor Calc+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (23 ratings)](https://appshunter.io/ios/app/a-complex-calc/id1372571548/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/resistor-calc-plus/id1441211200/reviews)** |
| Number of ratings | **23** | 5 |
| Positive reviews | **80.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Size | 28 MB | 6 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Antonio Ruffolo](https://appshunter.io/developer/1372571547) | [EONSOFT](https://appshunter.io/developer/899851112) |

## What reviewers say

### A Complex Calc

[App page](https://appshunter.io/ios/app/a-complex-calc/id1372571548)

Perform complex calculations with a modern, user-friendly interface. Offers both basic and scientific modes, including support for complex numbers and advanced functions. This lightweight application provides a history of computations and is completely free with no advertisements.

**Highlights:** Complex number support, Basic and Scientific modes, History of operations, Trigonometric and hyperbolic functions, Random number generation, Lightweight app size

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

**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 A Complex Calc free?

A Complex Calc is free to download, with no in-app purchases.

### Is Resistor Calc+ free?

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

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

Resistor Calc+ is rated higher. A Complex Calc averages 4.7 out of 5 from 23 ratings, while Resistor Calc+ averages 5.0 from 5 ratings.

### Do A Complex Calc or Resistor Calc+ have ads?

Resistor Calc+ shows ads; A Complex Calc does not.

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

A Complex Calc ships an update every 3 weeks, and Resistor Calc+ every 2 months. Most recently, A Complex Calc was updated on October 14, 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.*