Cataster

Cataster measures ambient noise using the device microphone, tags each reading withlocation and time, and plots them on a shared map backed by Supabase.
WHAT YOU GET
- 10,900 lines of TypeScript- Expo app with real audio capture and level analysis- Location tagging and map view- Supabase integration for storing and sharing readingsWHAT IS NOT INCLUDED — PLEASE READThe dBFS-to-SPL conversion uses a fixed offset. Microphone sensitivity varies bydevice by roughly ±15 dB, so the absolute values are not calibrated — they areuseful as relative comparisons, not as measurements you could cite.If you ship this, add a per-device calibration flow and label readings accordingly.That is a real piece of work and the price reflects that it is missing.No in-app purchases. UI text is German.

Digital delivery: Source-code package for the stated product. Hosting, domains, paid third-party services, accounts, API keys and credentials are not included unless explicitly stated.

License clarification (controls over any conflicting wording in this listing): This purchase includes a non-exclusive commercial license only (nicht exklusive kommerzielle Lizenz). No copyright, ownership, resale, redistribution, sublicensing, or exclusivity rights are transferred. You may use, modify, and deploy the source code in your own products or client work. A separate written agreement is required for an exclusive asset sale.