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Best Apps for Selling Your Stuff Online 2021

Selling stuff online is a great way to declutter your home and earn some extra cash. We tested some of the most popular online marketplace apps to find the best.




Best Apps for Selling Your Stuff Online 2021

Spring is here, and if you're looking to declutter and make some extra cash at the same time, there are many apps to help. We tested nine popular apps for selling your stuff online to find out how to make the most money with the least effort.

Mercari, a marketplace where you can sell almost anything, was our favorite for its great seller guidance. We also loved ThredUP's one-step decluttering process and found that Facebook Marketplace was best for local sales. And Tradesy was our favorite for high-end fashion.

Our Pick

Best Overall Marketplace App

Your stuff may be worth more than you think. Mercari can help you find the hidden value in your closet and junk drawer.

Why we chose Mercari:

  • You can sell anything on this well-organized marketplace site. The app is free, but Mercari takes 10% of the item price when sold (A pretty standard rate)
  • Listing items is quick and easy. You can do it in five minutes right from your phone
  • Great guidance for sellers helps you earn more. Mercari suggests items that are popular or profitable that you may have at home, and offers lots of tips for crafting a listing
  • Gamifies the selling experience by letting you set earnings goals and guiding you towards meeting them
  • Site is great for shopping, too. This is important for sellers since you need people to buy your items

Whether you want to get rid of a few things or dream of a side hustle selling your stuff, Mercari can help.

Read Mercari's Full Review
Runner Up

Best for Cleaning Out Your Closet

Want to sell your clothes but don't want to spend a lot of time creating listings? ThredUP is the app for you.

Why we chose thredUP:

  • Sell and donate your clothes in one step — ThredUP is the simplest of all the apps we tested. They send you a bag, you fill it with clothes and accessories you don’t want anymore and send it in. They sell what they can and donate the rest (or return to you for a fee if you prefer)
  • You don't have to worry about listing items, shipping, or communicating with buyers. ThredUP takes care of everything for you, including setting prices, although you can change the price if you want
  • Items are sold on consignment and are listed 30-90 days. You are paid when they sell
  • For a wardrobe refresh, opt for shopping credit instead of a cash payout to earn a little more
  • Your payout is likely to be lower than other apps, but it also takes much less time and effort

If you’re focused on decluttering more than earning money, consider ThredUP.

Read thredUP's Full Review
Also Groovy

Best Local Marketplace

  • Find friends, watch live videos, play games & save photos in your social network
    2.5 Ratings 126M+ Reviews 5B+ Downloads
    Free Feature Rich Fresh In App Purchases 1M+ Reviews
    Free In-App Purchases
    Free In-App Purchases


Psst ... you may not have to download a new app to sell your stuff online. If you're on Facebook, you're on Facebook Marketplace. 

Why we chose Facebook Marketplace.

  • Built right into the Facebook app, Marketplace lets you list anything from cars to knickknacks and sell them right in your neighborhood. Or ship to buyers around the world
  • App offers lots of tips for creating postings and meeting safely with buyers
  • Because Facebook doesn’t handle the transaction, they don’t take a fee
  • As with all things Facebook, the actual quality is less important than the fact that so many of people use it. Marketplace has lots of users and that means lots of potential buyers
If you're a Facebook user already, this may be the best choice for you, particularly if you want to sell large items to local buyers. Read Facebook Marketplace's Full Review
Also Groovy

Best High-End Fashion App

  • Buy & sell authentic luxury bags & brands. Save up to 70% off retail in the app.
    4.8 Ratings 51K+ Reviews 100K+ Downloads
    Free Fresh


Fashionistas and shopping mavens will appreciate the chance to get good prices for their luxury brands — as well as browsing for deals.

Why we chose Tradesy:

  • Tradesy specializes in high-end clothes, shoes, bags, accessories, and wedding items. If you have these, you can make good money on the site
  • Clear and detailed process for listing items. They ask for precise photos (item from the front, back, label, any flaws)
  • Smart Pricing feature allows you to maximize your earnings without letting your items sit on the app for too long
  • Multiple shipping options accommodate most users
  • For items under $50, they take a flat commission fee of $7.50. For items more expensive than $50, they take 19.8%. The commission is very high, but if you have luxury items to sell, Tradesy users are willing to pay higher prices than other sites, so you stand to make more money here

If you have a closet full of high-end clothes that you want to swap out for this season's trends, check out Tradesy. 

Read Tradesy's Full Review

Everything We Recommend

  • Our Pick
    Mercari is your marketplace.
    It’s the perfect place to go to declutter or find your new look. Letting go has never felt so good – it’s almost as good as finding your new favorite thing. And we’re here to help.

    Our team is always trying to find new ways to make exchanging items even easier. This means at-home pickups, same-day delivery, and a curated list of items you’ll love.

    It’s all from home.
    - Item sold? Contact your carrier for a home pickup.
    - Check out Mercari Local in select cities. The day your item is sold, a driver will pick it up and deliver it to the buyer.

    Listing is easy.
    - Take a few photos, add a description, and tap “list.”
    - Listing an item will always be free. We only charge fees when your sale is complete.
    - Once your ID is verified, you can get paid in minutes with Instant Pay.

    There are no meetups.
    - With Mercari, all items ship. You can sell almost anything from the comfort of home.
    - When you ship with a Mercari label, we’ll email you a printable shipping label when your item sells. Just print it out and drop off your package, or schedule a pickup.

    Shop from thousands of popular brands: Nike, Apple, Nintendo, Rae Dunn, Funko, and many more. We also have deals on quirky collectibles and authenticated luxury, all sold by real people like you.

    When you’ve found that perfect thing, we ask the seller to ship within 3 business days.

    Say goodbye to your old go-tos, and hello to the new you.
    We’d love to hear from you.

    DM us on our Instagram @mercari or tweet @mercari_app.

    Mercari is available in the US for anyone 18+.
    In-App Purchases
  • Runner Up
    Thrift & sell women's and kids' clothes online. Get up to an extra 50% off your first thredUP order today & enjoy:
    🛍️ Over 35,000 brands, from Gap to Gucci.
    💸 Up to 90% off brands like Lululemon, Zara, J. Crew & Ann Taylor LOFT
    😱 1,000+ arrivals EVERY DAY.
    🌎 Sustainable shopping app
    👌 Easy returns & free shipping with orders over $79.
    💳 Payment via Paypal, Google Pay, Affirm, and credit card.

    Up to 90% off est. retail on womenswear, accessories, maternity & kids' clothes. This thrift shopping app offers high-quality secondhand clothes from Lululemon, Zara, J. Crew & Ann Taylor LOFT & MORE! Plus, shop designer brands secondhand like The Real Real, discover Gucci, Louis Vuitton, Kate Spade & more wishlist finds, including Rent the Runway REVIVE!

    Like Poshmark but without the work, our Clean Out service is hands down the EASIEST way to sell or donate your secondhand clothes. We do everything, YOU get cash or credit. Here's how it works:
    1. Order a Clean Out Kit or FREE shipping label on thredUP's selling app.
    2. Fill a bag with women’s or kids’ clothes from brands like Lululemon, Zara, J. Crew & Ann Taylor LOFT, and send it back.
    3. Relax! We inspect, photograph, list, and ship items for you.

    There are enough amazing clothes on the planet, let's wear them. To date, we’ve upcycled over 100M items so far and we’re just getting started. Join our community of sustainable fashion lovers and thrifters who are committed to a more sustainable future by giving clothes a second life.

    "The App for the Responsible Shopper" - Elle
    "The Easiest Way To Practice Sustainable Fashion" - Forbes
    "Your favorite brands at a crazy reduced price." - Seventeen

    ★★★★ “This is where I get 95% of my clothes from. Not Your Daughter Jean’s, Splendid, Lululemon Athletica, they have a great selection of high end brands for such a great deal.” - Alexandra S.
    ★★★★ “The ease of using this app was mindblowing! I set the filters to the category, sizes, styles, and even sale percentages! And up pops whatever matches what I chose!” - Adell H.
    In-App Purchases
  • Also Groovy
    Keeping up with friends is faster and easier than ever. Share updates and photos, engage with friends and Pages, and stay connected to communities important to you.

    Features on the Facebook app include:

    * Connect with friends and family and meet new people on your social media network
    * Set status updates & use Facebook emoji to help relay what’s going on in your world
    * Share photos, videos, and your favorite memories.
    * Get notifications when friends like and comment on your posts
    * Find local social events, and make plans to meet up with friends
    * Play games with any of your Facebook friends
    * Backup photos by saving them in albums
    * Follow your favorite artists, websites, and companies to get their latest news
    * Look up local businesses to see reviews, operation hours, and pictures
    * Buy and sell locally on Facebook Marketplace
    * Watch live videos on the go

    The Facebook app does more than help you stay connected with your friends and interests. It's also your personal organizer for storing, saving and sharing photos. It's easy to share photos straight from your Android camera, and you have full control over your photos and privacy settings. You can choose when to keep individual photos private or even set up a secret photo album to control who sees it.

    Facebook also helps you keep up with the latest news and current events around the world. Subscribe to your favorite celebrities, brands, news sources, artists, or sports teams to follow their newsfeeds, watch live streaming videos and be caught up on the latest happenings no matter where you are!

    The most important desktop features of Facebook are also available on the app, such as writing on timelines, liking photos, browsing for people, and editing your profile and groups.

    Now you can get early access to the next version of Facebook for Android by becoming a beta tester. Learn how to sign up, give feedback and leave the program in our Help Center: http://on.fb.me/133NwuP

    Sign up directly here:

    Problems downloading or installing the app? See http://bit.ly/GPDownload1
    Still need help? Please tell us more about the issue. http://bit.ly/invalidpackage

    Facebook is only available for users age 13 and over.
    Terms of Service: http://m.facebook.com/terms.php.
    In-App Purchases
    $0.99 - $399.99 per item
    $0.99 - $19.99 per item

    Tradesy: Buy Luxury Brands

    4.8 Ratings 51K+ Reviews 100K+ Downloads
    Looking for the most authentic fashion bags and exclusive brands? Buy and Sell on the Tradesy app to create your revolving designer closet today. Download the app and shop authentic fashion designers like Louis Vuitton, Gucci, Chanel, Bottega Veneta, Givenchy and more, with exclusive promotions and sales of up to 70% OFF retail.

    Share the styles you no longer wear with the next savvy shopper on Tradesy. List pieces in great condition, from Zara to Louis Vuitton.

    When you sell an item, we'll send you a pre-paid, pre-addressed shipping kit, complete with beautiful packaging so you can ship without any extra effort.

    Our promise to you: every item you purchase on Tradesy is authentic. If you're concerned an item you bought isn't, return it for free. We'll verify whether it's the real deal, and if it's not, we'll give you a full refund. Simple as that!

    Tradesy is a curated marketplace where millions of women buy and sell fashion every month. We're on a mission to bring trust and fairness to fashion, making great style affordable and accessible to everyone.

    *Tradesy is a reseller of luxury designer brands and is not affiliated with any designer brands.
    In-App Purchases
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The 411 from our Appventurer

Caroline Rothnie
Written by:

Caroline Rothnie

Best Apps for Selling Your Stuff Online 2021



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