The clearest way to own your collection end to end
Track cards and LEGO sets in rich tables, watch prices, plan buys with your budget, share missing-card links, and get answers from the in-app assistant—all without juggling spreadsheets.
Portfolio aware
Dashboards that total what you own and what it might be worth.
Deep tables
Sort, filter, and drill into every card across collections.
Search + LEGO
Template & card search plus a full LEGO catalog, cached for speed.
Everything collectors actually use
One product surface for organization, market context, and sharing—so you spend time collecting, not wrangling data.
Dashboard & insights
See owned value, watchlists, and quick paths into every collection.
Collections
Per-brand detail, tables, and item-level actions that stay fast at scale.
Search
Sets, singles, and LEGO rows with filters tuned for real catalog shapes.
Watchlist & buy plan
Spread purchases across months and keep an eye on what moves first.
Sharing
Public missing-card links and wishlist images you can post anywhere.
AI assistant
Ask questions about your data from inside the app—no context switching.
Why DoubleUps
Built for people who care about every card—and every dollar.
Budgeting, pricing signals, and sharing should live next to your inventory. DoubleUps keeps the loop tight so you always know what to buy next and what it might cost.
