Neon ghosts at dusk
Filament
Spot the dead letter in broken signs before the buzz fades.
Dusk patrol tools
What Filament helps you do on the Buzz canvas.
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01
Buzz canvas cases
Swipe through neon sign puzzles on a phosphor-green canvas and guess which letter burned out.
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02
Case board archive
Filter solved, unsolved, and bookmarked cases—or capture fresh signs from your own photos.
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03
Ledger streak stats
Track accuracy, streaks, and dead-letter frequency as you restore filaments across the city.
App screens
Neon cases, quizzes, capture flow, and ledger.
Privacy Policy
Last updated: July 31, 2026
Filament stores your game progress, captured sign photos, and preferences locally on your device. We do not operate user accounts or collect personal data on our servers.
Photos you import for custom cases remain in the app sandbox unless you choose to share them through system share sheets. You can adjust capture retention in Kit settings.
We do not sell data, run third-party ad networks, or use analytics SDKs in Filament. If you contact us by email, we use your message only to respond.
Questions: yelyzavetadubovaapps@gmail.com
Support
Need help with a case, capture flow, or streak stats? Email us with your iOS version and a short description of the issue.
Contact: yelyzavetadubovaapps@gmail.com
We typically reply within two business days.