Comparison

CO₂ Aware vs TrueCost

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

Head to head
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

About

TrueCost

Features
Read full description

TrueCost helps you make smarter spending decisions by showing the real price of every purchase: your time. Instead of only tracking money, TrueCost converts each expense into life hours based on your income and work rhythm. You instantly see how much of your day, week, and life energy each purchase costs, so you can spend with more clarity and intention. Why people love TrueCost: - Convert prices into life hours in seconds - Build mindful spending habits - Use AI-powered reframes before impulsive buys - Track spending vs. resisted purchases - View clean dashboards and trend insights - Review detailed purchase history - Stay private with local-first data storage How it works: 1. Set your income, working hours, and days 2. Enter a purchase amount 3. See the true cost in time 4. Reflect, resist, or record 5. Improve your habits over time Premium Subscription: Upgrade to remove ads and enjoy a cleaner experience. Benefits include: - Ad-free experience - Unlimited AI reframes - Support ongoing development Designed for clarity, speed, and behavior change, TrueCost helps you pause before spending and align purchases with what matters most. If you want to spend less impulsively, save more intentionally, and make your money choices feel calmer and more conscious, TrueCost is for you. Download TrueCost and start treating your time like the wealth it truly is.

Screenshots

CO₂ Aware4 screens
TrueCost4 screens

Verdict

The call

The clearest difference is in-app purchases: CO₂ Aware at none against TrueCost's 1. CO₂ Aware also leads on ads (none vs shown). TrueCost's advantage is update cadence (every 5 days vs every 3 months). On price, device support and iOS requirement 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. TrueCost sells 1 in-app purchase, starting at $1.99 per year. CO₂ Aware asks for nothing beyond the download.

UpkeepUpdate frequency

CO₂ Aware ships an update every 3 months, TrueCost every 5 days. The most recent releases landed on October 10, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 6 level
CO₂ Aware versus TrueCost: the parameters behind the verdict, then further details
ParameterCO₂ AwareTrueCost
PriceFreeFree
Rating4.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size11 MB37 MB
Age rating4+4+
DeveloperShouzhi WangAbdelwahed farabi

In-app purchases

None

CO₂ Aware

No in-app purchases

1 purchases

TrueCost

Subscriptions1
  • Yearly ad-free experience$1.991 Year

Questions

Is CO₂ Aware free?
CO₂ Aware is free to download, with no in-app purchases.
Is TrueCost free?
TrueCost is free to download, with in-app purchases available.
Do CO₂ Aware or TrueCost have ads?
TrueCost shows ads; CO₂ Aware does not.
Which is updated more often, CO₂ Aware or TrueCost?
CO₂ Aware ships an update every 3 months, and TrueCost every 5 days. Most recently, CO₂ Aware was updated on October 10, 2026 and TrueCost on October 28, 2026.

Other comparisons