# EnviroSys vs ALS Compass Evolution

The clearest difference is update cadence: ALS Compass Evolution at every 2 weeks against EnviroSys's every 6 months. EnviroSys's advantage is iOS requirement (11.0 vs 14.2). On price, ads, 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.

EnviroSys ships an update every 6 months, ALS Compass Evolution every 2 weeks. The most recent releases landed on May 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | EnviroSys | ALS Compass Evolution |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Size | 31 MB | 60 MB |
| Requires iOS | **11.0** | 14.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACQUIRE TECHNOLOGY SOLUTIONS PTY LTD](https://appshunter.io/developer/1348201049) | [ALS LIFE SCIENCES PORTUGAL, S.A.](https://appshunter.io/developer/1678954382) |

## What reviewers say

### EnviroSys

[App page](https://appshunter.io/ios/app/envirosys/id1458359910)

**Features:** macOS Compatibility

**In-app purchases:** none


### ALS Compass Evolution

[App page](https://appshunter.io/ios/app/als-compass-evolution/id6467979005)

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

**In-app purchases:** none


## Frequently asked questions

### Is EnviroSys free?

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

### Is ALS Compass Evolution free?

ALS Compass Evolution is free to download, with no in-app purchases.

### Do EnviroSys or ALS Compass Evolution have ads?

Neither EnviroSys nor ALS Compass Evolution shows ads.

### Which is updated more often, EnviroSys or ALS Compass Evolution?

EnviroSys ships an update every 6 months, and ALS Compass Evolution every 2 weeks. Most recently, EnviroSys was updated on May 17, 2026 and ALS Compass Evolution on September 18, 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.*