Undercity
The Collector's Marketplace
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Undercity is the premium peer-to-peer marketplace and auction house built exclusively for serious collectors.
Whether you're hunting down a graded TCG items, a key issue comic, a rare figure, or a vintage artifact,
Undercity is where collectors come to buy, sell, trade, and compete at auction.
MARKETPLACE
Browse thousands of collectible listings from verified community sellers. Filter by category, rarity, grade, and price. Every item is presented with full detail, condition notes, grading info, and high-resolution images.
LIVE AUCTIONS
Place bids in real time and watch the competition unfold. Set your max bid and let the system fight for you, or jump in manually when it counts. Auctions close live, no sniping windows, no games.
DIRECT TRADES
See something you want but prefer to swap? Propose a trade directly with any seller. Negotiate terms through in-app messaging and seal the deal without spending a cent.
COLLECTOR RATING
Your reputation is everything. Undercity's proprietary Collector Rating system tracks your transaction history, community standing, and collecting behaviour, giving buyers and sellers the trust signals they need to deal with confidence.
COMMUNITY FEED
Post your latest pickups, share your claims, and connect with collectors who get it. The home feed surfaces the community's best finds and most active auctions in real time.
DIRECT MESSAGING
Talk deal terms, ask condition questions, or just talk shop. Every conversation is tied directly to the item, so nothing gets lost.
WHO IT'S FOR
- Trading Card Game collectors
- Comic book hunters
- Figure and statue collectors
- Vintage artifact and memorabilia enthusiasts
- Anyone serious about building and trading a collection
Built for collectors, by collectors.
Join the Undercity.
Seek, Claim, Treasure, Trade
General performance improvements and stability updates.
Keep the feedback coming via the message icon in-app.
The developer, Moment of Consciousness (Pty) Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Financial Info
- Contact Info
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Moment of Consciousness (Pty) Ltd
- Size
- 163.4 MB
- Category
- Shopping
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Infrequent
Contests
Contains
Advertising
Messaging and Chat
User-Generated Content
- Copyright
- © 2026 Undercity