# impakESG vs SustainOS

The clearest difference is iOS requirement: impakESG at 11.0 against SustainOS's 17.6. 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.

impakESG ships an update every 3 weeks, SustainOS every 2 weeks. The most recent releases landed on September 13, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | impakESG | SustainOS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 49 MB | 141 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Eighty One Sdn Bhd](https://appshunter.io/developer/1568228281) | [Net Carbon Vision Private Limited](https://appshunter.io/developer/1819702303) |

## What reviewers say

### impakESG

[App page](https://appshunter.io/ios/app/impakesg/id6505089974)

**Features:** macOS Compatibility

**In-app purchases:** none


### SustainOS

[App page](https://appshunter.io/ios/app/sustainos/id6747073314)

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

**In-app purchases:** none


## Frequently asked questions

### Is impakESG free?

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

### Is SustainOS free?

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

### Do impakESG or SustainOS have ads?

Neither impakESG nor SustainOS shows ads.

### Which is updated more often, impakESG or SustainOS?

impakESG ships an update every 3 weeks, and SustainOS every 2 weeks. Most recently, impakESG was updated on September 13, 2026 and SustainOS on September 14, 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.*