Volunteer Central vs Carbon Tracker US
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Volunteer Central
Discover local volunteer projects and partner organizations to contribute to your community. Sign up for events, log your service hours, and track your progress. Earn rewards and see how you rank among other volunteers.
- Find local service opportunities
- Partner with organizations
- Sign up for projects
- Track volunteer hours
- Redeem rewards
- Check city rank
Read full descriptionHide full description
Find local service opportunities and partner organizations to help make your city thrive! Sign up for a project, track your hours, redeem rewards, check your city rank, and more!
Carbon Tracker US
Read full descriptionHide full description
CarbonTracker is an AI agent that helps you understand and reduce your environmental impact by analyzing your everyday purchases. Smart Receipt Analysis • Scan receipts with your camera for instant carbon footprint calculation • AI-powered analysis identifies environmental impact of your purchases • Track spending patterns and their carbon consequences Environmental Insights • See the carbon footprint of individual items and total purchases • Understand how your shopping choices affect the planet Personal Dashboard • Monitor your carbon footprint over time • Set goals and track progress • View detailed breakdowns by category and store • Monitor your carbon footprint trends • Set monthly environmental goals • Celebrate milestones in your sustainability journey Privacy-First Design • Your data is encrypted in transit and at rest • Receipt images are processed securely by industry-leading AI • No personal information sold to advertisers or third parties • Transparent about what data we collect and how we use it Perfect for anyone interested in how much carbon emission you have or looking to make more sustainable choices in their daily lives. Start your journey toward a greener lifestyle today with CarbonTracker!
Screenshots
Verdict
The clearest difference is iOS requirement: Volunteer Central at 13.4 against Carbon Tracker US's 18.5. On price, update cadence, ads and in-app purchases 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.
Both ship on a similar rhythm, roughly monthly. Both last shipped on October 30, 2026.
| Parameter | Volunteer Central | Carbon Tracker US |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (7 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.4 — better | 18.5 |
| Further details — not scored | ||
| Size | 47 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Love Our Cities, INC | Siqin Yu |
In-app purchases
Volunteer Central
No in-app purchases
Carbon Tracker US
No in-app purchases
Questions
Is Volunteer Central free?
Is Carbon Tracker US free?
Do Volunteer Central or Carbon Tracker US have ads?
Which is updated more often, Volunteer Central or Carbon Tracker US?
Other comparisons
