Green Planet vs CO₂ Aware
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Green Planet
This app uses AI to help you classify garbage for recycling. It supports a large database of cities and common items, with features like voice and text search. Available on multiple Apple devices, it aims to make waste sorting easier.
- AI garbage classification
- 46 cities database
- Voice and text search
- Camera capture (beta)
- Apple Watch support
- Multi-language support
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# Introduction A simple AI garbage classification application for our green planet. # Features - Support 46 Cities Garbage Classification Database - Support Apple Watch - Support Voice Search - Support Text Search - Support Camera Capture (beta, via AI technology, support 40 common items at current version) - Support Siri - Support English, Traditional Chinese and Simplified Chinese - Support iPhone, and iPad # Feedback If you like this application please kindly give 5 stars. Any feedback and recommendation please click Email icon in about page.
CO₂ Aware
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.
- 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
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Leaving a smaller footprint requires change. CO₂ Aware is a high school student project focuses on small, daily actions that individuals can take to enable great change. People of today believe in technology, and we believe technology can also help mitigate the problem of climate change. This app includes dozens of essential actions that help you to be aware of climate change. An interactive tree is visible on the home page. As you complete more actions, it grows. This visualization allows you to experience tangibly and profoundly what you contribute to a better environment. Furthermore, you can take a picture when they complete an action, which serves as a record of your contribution. A section on the front page also shows a random action completed in the past, reminding your past accomplishments. Beyond actions, CO2 Aware also provides abstracts and links to high-quality news articles from renowned sources that allow you to acquire environmental knowledge. This app integrates with Apple Health on your iPhone in order to acquire your steps data and encourage you to walk. This helps reduce physical inactivity and prevents air pollution. We do not upload or analyze any data. We will be adding more thrilling features in the future. Just wait and see! Thanks for downloading this app. If you have any questions or comments, don't hesitate to send an email to shoguns.lenses.0s@icloud.com
Screenshots
Verdict
The clearest difference is rating: Green Planet at 5.0 against CO₂ Aware's 4.0. Green Planet also leads on iOS requirement (12.0 vs 15.0). CO₂ Aware's advantage is in-app purchases (none vs 3). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Green Planet sells 3 one-off in-app purchases. CO₂ Aware asks for nothing beyond the download.
Green Planet holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
Green Planet ships an update every 5 months, CO₂ Aware every 3 months. The most recent releases landed on September 17, 2026 and September 30, 2026 respectively.
| Parameter | Green Planet | CO₂ Aware |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 | 2 |
| Update frequency | Every 5 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 28 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | 涛 吴 | Shouzhi Wang |
Customer experience
Green Planet
CO₂ Aware
In-app purchases
Green Planet
- Buy developer for a drink$0.99
- Buy developer for a coffee$4.99
- Buy developer for a wine$14.99
CO₂ Aware
No in-app purchases









