- Footprint vs CO₂ Aware
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
- Footprint
This app helps you reduce your carbon footprint with personalized challenges and daily tips. It focuses on simplicity, offering recommendations based on your lifestyle to encourage eco-friendly habits.
- Carbon footprint tracking
- Personalized challenges
- Daily eco-friendly tips
- Lifestyle recommendations
- Push notifications
- User-friendly interface
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minusFootprint is a simple application that helps you with your carbon footprint. Unlike other applications which calculates specific values of carbon emission and have complex processes, minusFootprint keens at being simple. minusFootprint will recommend challenges and daily tips to you based on your lifestyle to help you maintain a more eco-friendly lifestyle. Features: -Beautiful and fluent User Interface -A wide range of challenges and tips that will help you with your lifestyle -Personalization based on user data input -Push Notifications
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: - Footprint at 5.0 against CO₂ Aware's 4.0. - Footprint also leads on iOS requirement (12.1 vs 15.0). 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. Neither carries in-app purchases, so what you see is what you pay.
- Footprint holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
- Footprint ships an update every 2 months, CO₂ Aware every 3 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | - Footprint | 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 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 42 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | 景程 杨 | Shouzhi Wang |
Customer experience
- Footprint
CO₂ Aware
In-app purchases
- Footprint
No in-app purchases
CO₂ Aware
No in-app purchases







