Comparison

Green CarShare vs OnBuoy

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

Head to head
About

Green CarShare

Features
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Green CarShare reservation system by Island Rides. Apply for membership, schedule reservations, and access vehicles through this app. Island Rides has initiated the Green CarShare program. The project encourages the elimination of carbon emissions and provides access to electric vehicle use. The CarShare program has been made possible through a grant from the Washington Department of Transportation Zero-Emissions Access Program (ZAP). Green CarShare provides access to charging stations and electric vehicles for members to reserve and drive. Members must be over the age of 21, with a valid driver’s license, insurance and a good driving history. If you meet the eligibility requirements and want to schedule a test drive, contact us at greencarshare-support@islandrides.org. Electric vehicles are shared across users who reserve times to use the cars. Have a question or want to get in touch? We'd love to hear from you. Contact us today, and we'll get back to you as soon as possible. Email us at greencarshare-support@islandrides.org

About

OnBuoy

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
Read full description

**OnBuoy – Find trusted guest moorage at your fingertips** OnBuoy helps boaters find safe, reliable places to tie up—without anchoring, guesswork, or last-minute stress. From private docks and mooring buoys to marinas, state parks, and public facilities, OnBuoy brings trusted guest moorage together in one easy-to-use platform built by and for boaters. The OnBuoy iPhone app includes everything you can do on the web—plus powerful mobile features designed for real-world boating, whether you’re planning ahead or navigating on the fly. WHY BOATERS LOVE ONBUOY * Discover private docks and mooring buoys offered by local hosts * Use the new public check in feature to find and announce occupied and unoccupied spaces * Reduce anchor damage and protect sensitive shorelines * Book with confidence using transparent listings, clear rules, and secure payments * Support a community-driven approach to responsible boating ENHANCEMENTS EXCLUSIVELY FOR THE IPHONE * Smoother maps and smarter filters** to find the right moorage fast * Quick access** to state park moorages, Intracoastal Waterway “free docks,” fuel docks, marinas, and pump-out stations * GPX waypoint export**, so you can drop moorages straight into your favorite navigation app * Push notifications** for new bookings and messages—no missed updates * Full moorage details**, optimized for mobile viewing * Support for charter and sailing-club vessels**, making it easy to manage shared boats BUILT FOR TRUST. DESIGNED FOR THE WATER. OnBuoy is often used in real-time, real-world situations—sometimes offshore, sometimes on the move. That’s why we focus on performance, clarity, and reliability before releasing the app. We are happy to release version 2.0 thanks to your feedback, and we will continue improving through the boating community's help. Whether you’re cruising unfamiliar waters or returning to a favorite harbor, OnBuoy helps you arrive with confidence. Download the OnBuoy app and tie up smarter.  We would love to hear your feedback. Please leave a review, use in-app contact, or email us directly at appfeedback@onbuoy.com

Screenshots

Green CarShare4 screens
OnBuoy4 screens

Verdict

The call

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.

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Green CarShare versus OnBuoy: the parameters behind the verdict, then further details
ParameterGreen CarShareOnBuoy
PriceFreeFree
Rating—5.0 (15 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—15 — better
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size21 MB43 MB
Age rating4+4+
DeveloperZemtu OGOnBuoy, SPC

In-app purchases

None

Green CarShare

No in-app purchases

None

OnBuoy

No in-app purchases

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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