Buffu

Buffu is a calm, fully offline 📴 tangram puzzle where every solve is decided by real geometry — not a scripted checkmark. You drag ✋, freely rotate and flip a small set of polygon pieces to fill a shown silhouette exactly, with no gaps and no overlaps. Pieces snap cleanly into place, and the moment your shapes truly tile the target 🎯, the puzzle is solved.

Three dissection sets give the game 🎮 its range: a gentle 3-piece Trio, a 5-piece Pentad, and the classic 7-piece Tangram. Across them sit 26 hand-crafted puzzles — squares, arrows, houses, a sailboat, a lighthouse and more — spread over Easy, Medium and Hard tiers, so there is always a next step up.

Every screen is built to be genuinely useful offline 📴:
• Puzzles library 📚 — search 🔍 by name, filter 🎚️ by difficulty 📏, and resume your last puzzle from a single tap. Each tile shows a real silhouette thumbnail and your own completion ring.
• Solve screen — a full play ▶️ surface with a piece tray, an arc rotation ring, a flip control, live coverage feedback, an objective line and an actionable hint that can snap the next piece into place, plus reset and show-solution.
• Progress 📈 dashboard 📊 — a visualization computed entirely from your own results: per-set completion rings, a solves heatmap 🔥 you can switch between moves and time ⏱️, and real stat tiles.
• Sets almanac — preview each dissection set, jump into free 🆓 play ▶️, and browse the puzzles it contains.
• Settings — tune haptics, snap-to-grid and rotation snap, reset your progress 📈, and reach the privacy policy.

When you finish a puzzle, Buffu lets you attach a keepsake photo 📸 from your camera 📷 or gallery 🖼️ as a personal trophy for that solve — a small, private 🔒 memento that appears back in your library.

There are no accounts, no sign-in and no network required — all puzzles, geometry and progress 📈 live on your device 📱. Pick it up for a quiet minute or settle in for a longer session ⏱️; the tangram is always ready. If you enjoy spatial-reasoning puzzles, brain-teasers and classic dissection games, Buffu is a tidy, thoughtful pocket set to keep coming back to.