Comparison

- Footprint vs CO₂ Aware

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

- 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.

Highlights
  • Carbon footprint tracking
  • Personalized challenges
  • Daily eco-friendly tips
  • Lifestyle recommendations
  • Push notifications
  • User-friendly interface
Features
Read full description

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

About

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.

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
Read full description

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

- Footprint4 screens
CO₂ Aware4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

- 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.

UpkeepUpdate frequency

- 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.

Scorecard2 real differences · 8 level
- Footprint versus CO₂ Aware: the parameters behind the verdict, then further details
Parameter- FootprintCO₂ Aware
PriceFreeFree
Rating5.0 (2 ratings) — better4.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings22
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.1 — better15.0
Further details — not scored
Size42 MB11 MB
Age rating4+4+
Developer景程 杨Shouzhi Wang

Customer experience

- Footprint

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

CO₂ Aware

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

None

- Footprint

No in-app purchases

None

CO₂ Aware

No in-app purchases

Questions

Is - Footprint free?
- Footprint is free to download, with no in-app purchases.
Is CO₂ Aware free?
CO₂ Aware is free to download, with no in-app purchases.
Which has better reviews, - Footprint or CO₂ Aware?
- Footprint is rated higher. - Footprint averages 5.0 out of 5 from 2 ratings, while CO₂ Aware averages 4.0 from 2 ratings.
Do - Footprint or CO₂ Aware have ads?
Neither - Footprint nor CO₂ Aware shows ads.
Which is updated more often, - Footprint or CO₂ Aware?
- Footprint ships an update every 2 months, and CO₂ Aware every 3 months. Most recently, - Footprint was updated on October 24, 2026 and CO₂ Aware on October 10, 2026.

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