# Green CarShare vs OnBuoy

The clearest difference is update cadence: OnBuoy at every 2 weeks against Green CarShare's every 5 months. Green CarShare's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Green CarShare ships an update every 5 months, OnBuoy every 2 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Green CarShare | OnBuoy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (15 ratings)](https://appshunter.io/ios/app/onbuoy/id6757410812/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 21 MB | 43 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zemtu OG](https://appshunter.io/developer/1496004290) | [OnBuoy, SPC](https://appshunter.io/developer/1866742695) |

## What reviewers say

### Green CarShare

[App page](https://appshunter.io/ios/app/green-carshare/id6499452265)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### OnBuoy

[App page](https://appshunter.io/ios/app/onbuoy/id6757410812)

Find trusted guest moorage for your boat with this platform. Discover private docks, mooring buoys, marinas, and public facilities. Book with confidence and support responsible boating practices.

**Highlights:** Discover private docks and mooring buoys, Book with confidence using secure payments, Support community-driven responsible boating, Mobile-optimized maps and filters, GPX waypoint export to navigation apps, Push notifications for bookings and messages

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Green CarShare free?

Green CarShare is free to download, with no in-app purchases.

### Is OnBuoy free?

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

### Do Green CarShare or OnBuoy have ads?

Neither Green CarShare nor OnBuoy shows ads.

### Which is updated more often, Green CarShare or OnBuoy?

Green CarShare ships an update every 5 months, and OnBuoy every 2 weeks. Most recently, Green CarShare was updated on October 27, 2026 and OnBuoy on October 24, 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.*