App Store Keywords for Resale and Marketplace Apps

Marketplace ASO has to serve both sides of the transaction

A marketplace app rarely has one search audience. Buyers want products, deals, discovery, and trust. Sellers want demand, simple listings, predictable fees, shipping support, and fast payment. A keyword strategy that speaks only to shopping may weaken seller acquisition; a strategy built only around selling may make the marketplace feel empty to buyers.

Start with the marketplace model and the side that is hardest to acquire. Then build related keyword clusters around real product strengths. Apple does not publish search volume or competitors' hidden keyword fields, so the terms below are candidates to validate, not guaranteed ranking opportunities.

Map the six main marketplace keyword intents

Separate buyer and seller language

Buyer terms describe what can be found and why the purchase feels worthwhile. Seller terms describe how quickly supply can be listed, whether demand exists, what the transaction costs, and how earnings reach the seller.

Avoid forcing every buyer and seller phrase into one subtitle. Choose the side that defines current growth, then use screenshots or Custom Product Pages to serve the other acquisition intent.

Use category depth to escape generic marketplace competition

Marketplace, shopping, and buy and sell are relevant but broad. Category terms can connect the listing to a more concrete supply advantage: streetwear, vintage clothing, luxury bags, trading cards, furniture, electronics, handmade goods, or local services.

Category coverage must reflect actual liquidity. Ranking for a narrow product term is not useful if buyers find little inventory or sellers find no demand. Marketplace ASO and marketplace health cannot be separated.

Treat trust terms as product promises

Buyer protection, authentication, secure checkout, tracked shipping, refunds, seller verification, and safe payments can support conversion, but they are not decorative keywords. Each term creates an expectation about disputes, prohibited goods, delivery, and support.

• Name protection only when its scope is clear
• Avoid implying every item is authenticated if verification is selective
• Keep fee and payout claims current by storefront
• Use reviews to find where trust expectations break

The reviews-to-conversion framework explains how to distinguish a listing expectation problem from a product, support, or transaction failure.

Map terms to metadata without repeating everything

Public listings illustrate distinct choices: Vinted emphasizes a pre-loved marketplace and second-hand clothes, Depop emphasizes a thrift clothing marketplace, and Whatnot emphasizes live shopping. See the Vinted, Depop, and Whatnot comparison for the full breakdown.

Example metadata directions

These structures demonstrate intent coverage. They are not complete metadata recommendations and should not include competitor brands.

Fashion resale marketplace

• Title direction: Brand + Resale Marketplace
• Subtitle direction: Buy & Sell Vintage Fashion
• Supporting roots: thrift, clothes, streetwear, closet, secondhand, list, ship

Live collectibles marketplace

• Title direction: Brand + Live Auctions
• Subtitle direction: Shop Cards, Coins & Collectibles
• Supporting roots: bid, stream, seller, trading, rare, deals, community

Local marketplace

• Title direction: Brand + Local Marketplace
• Subtitle direction: Buy & Sell Nearby
• Supporting roots: used, pickup, neighborhood, furniture, electronics, list

Make screenshots continue the acquisition promise

Seller traffic should see earnings, listing effort, demand, or shipping. Buyer traffic should see inventory, discovery, value, and trust. Live-shopping traffic should see the energy and mechanics of a live transaction rather than a static product grid alone.

1. Lead with the primary side of the marketplace
2. Demonstrate the core listing, browsing, or bidding workflow
3. Reduce the biggest trust or economics objection
4. Show category breadth only after the primary value is clear

Use the screenshot copywriting guide to turn each intent cluster into concise creative.

Validate the keyword strategy with marketplace metrics

Search visibility is only useful when new users strengthen the marketplace. Measure acquisition together with transaction quality.

• Buyer and seller activation by acquisition source
• Time to first listing, purchase, or sale
• Search-to-result and listing-to-sale rates
• Repeat purchase and repeat seller behavior
• Disputes, cancellations, refunds, and support contacts

A keyword may generate installs while attracting the wrong side, wrong category, or wrong transaction expectation. Keep the term only when downstream marketplace behavior supports it.

A practical marketplace keyword workflow

1. Define the market, geography, format, and constrained side
2. Build buyer, seller, category, format, trust, and economics clusters
3. Remove terms the product or inventory cannot substantiate
4. Compare public competitor metadata and creative
5. Map one primary cluster to title, subtitle, and screenshots
6. Validate the hidden field with the free keyword counter
7. Measure conversion and transaction quality together

Use the App Store Keyword Field Counter to remove duplicates and stay within Apple's field limit.

FAQ

What is the best keyword for a marketplace app?

There is no universal best term. Choose a relevant market, audience, category, or transaction format that the product and current supply can prove.

Should a marketplace target buyers or sellers?

Prioritize the side constraining marketplace growth, then use additional creative or Custom Product Pages for the other side.

Can fee claims be used as keywords?

Only when the claim accurately reflects current fees in the target market. Clarify payment processing, promotion, shipping, or service fees that still apply.

Should competitor names go in the keyword field?

Avoid third-party trademarks. Target accurate category, audience, product, format, and outcome language instead.