# ADC Urethane Systems vs Circuit Resistance Creator

The clearest difference is update cadence: Circuit Resistance Creator at every 3 weeks against ADC Urethane Systems's every 3 months. ADC Urethane Systems's advantage is iOS requirement (11.0 vs 14.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for ADC Urethane Systems against 5.0 for Circuit Resistance Creator. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

ADC Urethane Systems ships an update every 3 months, Circuit Resistance Creator every 3 weeks. The most recent releases landed on October 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | ADC Urethane Systems | Circuit Resistance Creator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/adc-urethane-systems/id1462098192/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/circuit-resistance-creator/id1475404949/reviews) |
| Number of ratings | **7** | 3 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 13 MB | 15 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CODIFI LLC](https://appshunter.io/developer/1197506641) | [David White](https://appshunter.io/developer/911163945) |

## What reviewers say

### ADC Urethane Systems

[App page](https://appshunter.io/ios/app/adc-urethane-systems/id1462098192)

This free utility app provides users with essential tools for urethane products. It includes casting calculators, formulation search, and access to technical data sheets and safety data sheets.

**Highlights:** Casting calculators, Formulation search, Technical data sheets, US SDS access, Urethane product information

**Features:** macOS Compatibility

**In-app purchases:** none


### Circuit Resistance Creator

[App page](https://appshunter.io/ios/app/circuit-resistance-creator/id1475404949)

Calculate equivalent resistance for any resistor circuit. This tool is designed for students, technicians, and engineers, offering high accuracy for voltage, current, and resistance. It's a great way to check homework and perform engineering calculations.

**Highlights:** Equivalent resistance calculation, Supports any resistor circuit, High accuracy displays (6 decimal places), Apply custom circuit voltages, Designed for students and engineers, Homework checking tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ADC Urethane Systems free?

ADC Urethane Systems is free to download, with no in-app purchases.

### Is Circuit Resistance Creator free?

Circuit Resistance Creator is free to download, with no in-app purchases.

### Which has better reviews, ADC Urethane Systems or Circuit Resistance Creator?

ADC Urethane Systems and Circuit Resistance Creator are both rated 5.0 out of 5 on the App Store, from 7 and 3 ratings respectively.

### Do ADC Urethane Systems or Circuit Resistance Creator have ads?

Neither ADC Urethane Systems nor Circuit Resistance Creator shows ads.

### Which is updated more often, ADC Urethane Systems or Circuit Resistance Creator?

ADC Urethane Systems ships an update every 3 months, and Circuit Resistance Creator every 3 weeks. Most recently, ADC Urethane Systems was updated on October 24, 2026 and Circuit Resistance Creator on September 26, 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.*