# Volunteer Central vs Carbon Tracker US

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.

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.

## The numbers

| Metric | Volunteer Central | Carbon Tracker US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (7 ratings)](https://appshunter.io/ios/app/volunteer-central/id6478170865/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | — |
| Size | 47 MB | 4 MB |
| Requires iOS | **13.4** | 18.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Love Our Cities, INC](https://appshunter.io/developer/1732064271) | [Siqin Yu](https://appshunter.io/developer/1836378162) |

## What reviewers say

### Volunteer Central

[App page](https://appshunter.io/ios/app/volunteer-central/id6478170865)

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.

**Highlights:** Find local service opportunities, Partner with organizations, Sign up for projects, Track volunteer hours, Redeem rewards, Check city rank

**Features:** macOS Compatibility

**In-app purchases:** none


### Carbon Tracker US

[App page](https://appshunter.io/ios/app/carbon-tracker-us/id6751712815)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Volunteer Central free?

Volunteer Central is free to download, with no in-app purchases.

### Is Carbon Tracker US free?

Carbon Tracker US is free to download, with no in-app purchases.

### Do Volunteer Central or Carbon Tracker US have ads?

Neither Volunteer Central nor Carbon Tracker US shows ads.

### Which is updated more often, Volunteer Central or Carbon Tracker US?

Volunteer Central ships an update monthly, and Carbon Tracker US monthly. Most recently, Volunteer Central was updated on October 30, 2026 and Carbon Tracker US on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*