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November 15, 2025
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Mobile commerce isn’t just the future—it’s already here. By 2029, over 63% of all ecommerce sales will happen on mobile devices. Whether you’re an entrepreneur building your brand or just cleaning out your closet, the right selling app can help you turn your products into profit straight from your phone.
In this guide, we’ll break down the 9 best apps to sell stuff in 2025, how to choose the right one for your goals, and expert tips for maximizing your earnings.
The Shop app gives Shopify merchants a powerful new way to reach mobile shoppers. Orders are processed directly through your Shopify store—meaning no extra seller fees, just your standard Shopify payment processing.
Shop also includes:
Perfect for: Businesses of any size looking to grow their ecommerce presence.
Pricing: Included with your Shopify plan.
Why it works: Seamless integration, full brand control, and access to 100M+ Shop app users.
A classic marketplace that continues to dominate online reselling. From collectibles to refurbished tech, eBay attracts both hobby sellers and full-time merchants.
With the Marketplace Connect app, Shopify sellers can sync their products, prices, and inventory to eBay directly from their Shopify dashboard.
Best for: Antique, collectible, and general goods sellers
Pricing:
Features: Auctions, Shopify integration, international audience
Facebook Marketplace remains one of the best free tools for selling locally. It’s integrated into the Facebook app, so you can list products in minutes and chat with buyers through Messenger.
It’s great for selling large or heavy items (like furniture or electronics) and now supports in-app checkout and shipping for small businesses.
Best for: Local sellers and small retailers
Fees: None for local pickup; 10% for shipped items
Features: Messenger integration, flexible delivery options
If fashion is your niche, Poshmark is your playground. It’s a social selling app where you can host live shopping events, use bundling tools to encourage upsells, and access built-in analytics.
Buyers pay a flat $8.27 shipping fee, and sellers receive prepaid shipping labels.
Best for: Clothing and accessory resellers
Fees: $2.95 (sales under $15) / 20% (sales over $15)
Features: Live selling (Posh Shows), social engagement tools, community-driven marketplace
Pro tip: New to Poshmark? Sign up here with code FINALSALE2020 to save $10 on your first purchase—perfect for trying the platform risk-free.
Etsy is still the top marketplace for handmade, custom, and vintage products. It offers advanced tools like Etsy Ads and Shopify integration via Marketplace Connect, making it easy to manage all orders in one place.
Best for: Crafters, artists, and vintage sellers
Fees:
OfferUp is a mobile-first local marketplace that’s expanded into nationwide shipping and even service listings. You can sell everything from second-hand phones to home décor—or even post jobs.
Best for: Local sellers, service providers, and quick deals
Fees: None for local; 12.9% for shipped items
Features: Jobs and housing categories, reputation ratings, simple app interface
A Japanese-founded app with massive global reach, Mercari is known for its simplicity and wide variety of listings—from clothing to electronics.
Best for: Casual sellers and general resellers
Fees: 10% per sale (no listing fees)
Features: Instant Pay option, international buyers, intuitive mobile interface
Turn your extra stuff into income. Start selling on Mercari today and experience how easy it is to earn from your phone.
ThredUp takes the work out of selling clothing online. Just send your clothes, and their team photographs, lists, prices, and ships them for you.
Best for: Busy people who want a hands-off consignment model
Fees:
The original online classifieds site still holds up in 2025 for local, no-frills selling. From furniture and cars to services and jobs, Craigslist remains free for most categories and transactions are direct.
Best for: Local, in-person sales
Fees: None (some paid categories for real estate, cars, jobs)
Features: Simplicity, flexibility, massive reach
Who’s buying your products?
Factor in all costs—listing, transaction, subscription, and shipping—to calculate your real profit margin.
Look for options like:
If you’re planning to build a long-term business, you need control over your brand identity.
That’s where Shopify + Shop app stand out—you can create a custom storefront that builds customer trust and loyalty from day one.
✅ Use bright, high-quality photos
✅ Write clear, keyword-rich descriptions
✅ Offer fair, data-driven pricing
✅ Communicate safely—avoid sharing personal info
✅ Reinvest profits into building your own Shopify store
While apps are great for quick sales, true scalability starts with your own online store. With Shopify, you can:
👉 Start your free Shopify trial and turn your side hustle into a business today.
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