Shack

Shack is the AI-powered auction app that's completely disrupting the second-hand marketplace. Born in Switzerland and now live in Switzerland, Germany, Austria, and the United States, Shack is engineered for the modern consumer who values authenticity, speed, and keeping their hard-earned cash. This isn't another cluttered platform flooded with drop-shippers and mass-produced goods. Shack is a curated, community-driven space where real people buy and sell authentic, pre-loved treasures. Its core value proposition is powerful: 100% fee-free transactions for both buyers and sellers, eliminating the commission costs that plague other platforms. By leveraging cutting-edge AI, Shack allows users to launch a detailed auction in mere seconds by simply taking a photo—the AI generates titles, descriptions, and smart price suggestions. The interactive Shack Map transforms local discovery, letting you find and bid on exciting items right in your neighborhood in real-time. For anyone looking to declutter sustainably, hunt for unique collectibles, or flip items for pure profit, Shack is your essential AI wingman for a seamless, secure, and genuinely rewarding marketplace experience.

Sherlock Shack - AI-Powered Product Search

This intelligent search feature acts as your personal detective, scouring the platform to instantly find exactly what you're looking for. It goes beyond basic keywords, understanding context and item details to surface the most relevant auctions, saving you hours of manual scrolling and ensuring you never miss a hidden gem.

Scan Shack - Instant AI Auction Creation

This is the game-changer. Simply snap a photo of the item you want to sell. Shack's advanced AI analyzes the image and automatically generates a compelling title, detailed description, relevant keywords, and intelligent price suggestions. You can launch a professional-grade auction in seconds, bypassing the tedious manual entry required on other platforms.

Police Shack - Verified Safety & Authenticity

Security is non-negotiable. Police Shack conducts automated safety checks, including verifying seller IDs, to foster a trusted environment. This system, combined with a human review process for listings, ensures the platform remains free of retail new items and professional sellers, guaranteeing authentic peer-to-peer transactions.

Map Shack - Interactive Local Treasure Discovery

Ditch the endless feed. Map Shack provides a live, interactive map that visualizes auctions happening right around you. Discover local treasures, engage in real-time bidding wars with nearby users, and experience the thrill of picking up your win without shipping hassles. It turns your city into a dynamic, explorable marketplace.

The Sustainable Declutterer

Quickly and profitably clear out your closet, garage, or attic. Use Scan Shack to instantly list items you no longer need. The fee-free model means you keep 100% of the sale price, turning your unused possessions into cash while promoting a circular economy and reducing waste.

The Savvy Flipper & Side-Hustler

Source unique second-hand items from local auctions on the Map and resell them for a profit. Shack's AI tools help you price competitively and list efficiently, maximizing your turnover. With no seller fees, your profit margin is significantly higher compared to traditional marketplaces.

The Local Treasure Hunter & Collector

Discover one-of-a-kind collectibles, vintage furniture, or rare finds in your immediate area. Use the Map Shack to explore live auctions nearby and bid in real-time. Experience the excitement of winning a local item and arranging a convenient, often same-day, pickup.

The Conscious Consumer & Bargain Finder

Find authentic, high-quality pre-owned goods at great prices without wading through commercial listings. The AI-curated, ad-free environment and verified user base ensure you're dealing with real people and genuine items, making every purchase a smart, sustainable choice.

How do I sign up for Shack?

Signing up is designed for maximum speed and security. You can easily create an account using Apple Sign-In directly within the iOS app, ensuring a seamless and private onboarding experience without the need for lengthy forms.

Are there any transaction or seller fees?

No. Shack operates on a groundbreaking 100% fee-free model. Buying and selling is completely free of charge. There are never any commission fees or transaction costs deducted from your sales, which is a major disruption in the C2C marketplace space.

What payment methods are supported?

Transactions are flexible and peer-to-peer. Buyers can pay sellers in CHF via TWINT, in EUR, via PayPal, or even with cryptocurrency if the seller chooses to offer it. This puts the payment choice directly in the hands of the users involved in the transaction.

What devices are supported?

Currently, Shack is available exclusively as a native iOS application. You need an iPhone or iPad running iOS 17.0 or later to download the app from the App Store and start buying and selling.