# GO2 Alarm vs ADC Urethane Systems

The clearest difference is iOS requirement: GO2 Alarm at 7.0 against ADC Urethane Systems's 11.0. On price, update cadence, ads 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.

GO2 Alarm ships an update every 2 months, ADC Urethane Systems every 3 months. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | GO2 Alarm | ADC Urethane Systems |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/adc-urethane-systems/id1462098192/reviews)** |
| Number of ratings | — | **7** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | — | Free |
| Size | 79 MB | 13 MB |
| Requires iOS | **7.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chuango Security Technology Corporation](https://appshunter.io/developer/534068551) | [CODIFI LLC](https://appshunter.io/developer/1197506641) |

## What reviewers say

### GO2 Alarm

[App page](https://appshunter.io/ios/app/go2-alarm/id950220556)

**In-app purchases:** none


### 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


## Frequently asked questions

### Is GO2 Alarm free?

GO2 Alarm is free to download, with no in-app purchases.

### Is ADC Urethane Systems free?

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

### Do GO2 Alarm or ADC Urethane Systems have ads?

Neither GO2 Alarm nor ADC Urethane Systems shows ads.

### Which is updated more often, GO2 Alarm or ADC Urethane Systems?

GO2 Alarm ships an update every 2 months, and ADC Urethane Systems every 3 months. Most recently, GO2 Alarm was updated on October 13, 2026 and ADC Urethane Systems on October 24, 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.*