I need a mobile solution that lets our third-party inspectors prove when—and where—they arrive on-site. The app must run on both iOS and Android and give each inspector a straightforward interface to: • Check in and check out, saving a precise time-stamp • Capture GPS coordinates automatically while checking in/out • Attach site photos to each visit On my side, I want a secure, web-based console where I can: • View every inspection record in real time • Generate downloadable reports (by date range, inspector, or site) • Create, edit, suspend, or delete user accounts Core expectations • Clean, intuitive UI for inspectors with offline caching that syncs when connectivity returns • Cloud-hosted backend (Firebase, AWS, or similar) with role-based access • Simple assignment tracker so I can push new jobs to inspectors and see their status at a glance • Source code, brief technical documentation, and a short hand-off session at the end If you have built attendance or field-force tracking tools before, please mention the stack you prefer and share a working example or screenshots.