WhichBrick

A kid-friendly brick helper for finding pieces, browsing sets, and discovering new builds from the collection you already have.

WhichBrick is a friendly brick-building companion for kids and families. Add the sets you own, browse big photos, tap into parts, and quickly answer the question that always comes up during a build: which brick do we need?

Made for young builders, WhichBrick keeps things simple: large tap targets, visual browsing, minimal text, and parent-managed sign-in. Kids can explore their sets, search for parts, star favorites, and save notes or build photos without digging through a grown-up collection spreadsheet.

When a piece goes missing, WhichBrick helps you look across your collection to see where that part appears in other sets. It is a practical way to rescue a build without dumping every bin on the floor.

WhichBrick also helps turn the sets you already have into new ideas. From a selected set, find available alternate builds and MOCs, then save favorites for later. The app uses Rebrickable catalog data so your collection stays useful, searchable, and fun to explore.

Features:

• Add sets by set number or search
• Browse owned sets with clear images
• See each set's parts grouped by color
• Search parts across your collection
• Find which sets contain a part
• Discover alternate builds and MOCs
• Star favorite sets, parts, and builds
• Add notes and photos to favorites
• Sync account data across devices

WhichBrick is free to try with up to 10 sets. A subscription unlocks unlimited sets and cloud sync.

WhichBrick is for kids, but a parent or guardian sets up and manages the account.

WhichBrick is not affiliated with or endorsed by the LEGO Group.

WhichBrick is an auto-renewable subscription: $1.99/month (or $14.99/year), unlocking unlimited sets and cloud sync. Payment is charged to your Apple ID; it auto-renews unless canceled at least 24 hours before the period ends.

WhichBrick Privacy Policy: https://whichbrick.app/privacy/

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/