iPhone Screenshots


COIN is a directory in an app connecting collectors, buyers and sellers with experts at the finest galleries and boutiques in London and the UK.

We’ve created a unique platform that allows you to buy and sell secondary market items with convenience and confidence. You’ll find hundreds of items on the app - art, jewellery, watches, design, rare books, antiques, fashion and collectables - all from recommended experts or our trusted sellers with our guarantee of authenticity.

The COIN app allows you to sell quickly and discreetly, while achieving the best value for your items. All offers are sealed: messages and negotiations are secure and confidential.

If you have items to sell, you can quickly and easily upload them to the app, and through an algorithm we have created we are able to match your item(s) with a list of the most suitable potential recommended expert buyers then start receiving offers. All communication is instant, completely private and free.

On our user-friendly app you will have access to our directory of recommended experts from the finest galleries and boutiques in London and across the UK. You can view experts’ details and reviews, and connect with authentic sellers and genuine buyers.

Browse, buy and sell from wherever you are, with no waiting and no fees. Communicate directly with the seller within the app to make an offer and agree a price. We don’t charge commission: the price you agree is the price you pay and they receive.

Look out for great deals in our Snap Sales. Find rare and unique items from our recommended experts at exclusive Snap Sale prices. Each item is only available for a limited time, so send the seller an instant in-app message as soon as you spot something you like. Again, there's no commission on these items, so there are some truly great deals to be snapped up.

The COIN app is quick, easy and free to use. Follow our step-by-step guides and get buying or selling today.

1. Download the COIN app
2. Create a COIN profile in seconds
3. Upload details of your item
4. You’ll get an instant access to a selection of the best potential recommended expert buyers for your item.
5. You can choose to:
- Message all matched recommended expert buyers with your item
- View their profiles and message selected recommended expert buyers
- Request to post your item onto the COIN feed. If suitable and once verified by our team, the item can be seen by both expert and private buyers.
6. Receive offers and negotiate with recommend experts and potential buyers directly within the app to agree the sale. All offers are sealed, and conversations are confidential so no one buyer sets a price.

1. Download the COIN app
2. Create a COIN profile in seconds
3. Browse through hundreds of items either in our ‘snap sale’ or our feed, filtering to your requirements
4. Agree terms and deal direct with any seller.

It is strongly recommended that sellers use our Premium service for private sales. With our Premium service, COIN looks after every aspect of the sale from the moment the item is uploaded. We manage authentication, communication, logistics and insurance. We’ll also handle the payment process for you, saving you hassle and giving you peace of mind. For the premium service, we charge 5 – 10% of the final sale price.

What’s New

Version 1.3

Minor bug fixes and improvements

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating


Coin Projects Limited
257 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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