# CO₂ Aware vs Terralox

The clearest difference is rating: Terralox at 5.0 against CO₂ Aware's 4.0. Terralox also leads on update cadence (every 3 weeks vs every 3 months). CO₂ Aware's advantage is monetization model (free vs paid). On price, ratings volume, 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.

Terralox holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

CO₂ Aware ships an update every 3 months, Terralox every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | CO₂ Aware | Terralox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/co-aware/id1670412338/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/terralox-climate-change/id6765864399/reviews)** |
| Number of ratings | 2 | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Size | 11 MB | 28 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shouzhi Wang](https://appshunter.io/developer/1670412340) | [Fampot](https://appshunter.io/developer/1892473966) |

## What reviewers say

### CO₂ Aware

[App page](https://appshunter.io/ios/app/co-aware/id1670412338)

This app encourages daily actions to combat climate change with a growing interactive tree visualization. It offers environmental news and integrates with Apple Health to promote walking, helping users reduce their carbon footprint.

**Highlights:** Daily climate action tracking, Interactive growing tree visualization, Environmental news abstracts and links, Apple Health integration for step tracking, Photo record of completed actions, Reminder of past accomplishments

**Features:** macOS Compatibility

**In-app purchases:** none


### Terralox

[App page](https://appshunter.io/ios/app/terralox-climate-change/id6765864399)

This app personalizes the challenge of climate change by letting you see a 3D Earth respond to your daily eco-friendly actions. Complete small missions to track your real impact and build sustainable habits, with AR features to bring the planet into your room.

**Highlights:** Daily eco-missions, Track real-world impact, 3D Earth visualization, Augmented Reality mode, Build eco-streaks, VoiceOver and Voice Control support

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

**In-app purchases:** none


## Frequently asked questions

### Is CO₂ Aware free?

CO₂ Aware is free to download, with no in-app purchases.

### Is Terralox free?

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

### Which has better reviews, CO₂ Aware or Terralox?

Terralox is rated higher. CO₂ Aware averages 4.0 out of 5 from 2 ratings, while Terralox averages 5.0 from 2 ratings.

### Do CO₂ Aware or Terralox have ads?

Neither CO₂ Aware nor Terralox shows ads.

### Which is updated more often, CO₂ Aware or Terralox?

CO₂ Aware ships an update every 3 months, and Terralox every 3 weeks. Most recently, CO₂ Aware was updated on October 30, 2026 and Terralox on October 31, 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.*