# Avatar vs Green Science

The clearest difference is update cadence: Avatar at every 3 weeks against Green Science's every 2 months. Avatar also leads on iOS requirement (12.0 vs 15.5). 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.

Avatar ships an update every 3 weeks, Green Science every 2 months. The most recent releases landed on September 29, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Avatar | Green Science |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 86 MB | 56 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Reeder](https://appshunter.io/developer/1709103370) | [ZEY ENERJI SANAYI VE TICARET ANONIM SIRKETI](https://appshunter.io/developer/1772906289) |

## What reviewers say

### Avatar

[App page](https://appshunter.io/ios/app/avatar/id6471125863)

**In-app purchases:** none


### Green Science

[App page](https://appshunter.io/ios/app/green-science/id6736655887)

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

**In-app purchases:** none


## Frequently asked questions

### Is Avatar free?

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

### Is Green Science free?

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

### Do Avatar or Green Science have ads?

Neither Avatar nor Green Science shows ads.

### Which is updated more often, Avatar or Green Science?

Avatar ships an update every 3 weeks, and Green Science every 2 months. Most recently, Avatar was updated on September 29, 2026 and Green Science on October 16, 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.*