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Appendix B — Field & Offline

AlgoNexta works when the internet doesn’t.

Purpose-built for humanitarian field conditions. Six layers of resilience so teams in intermittent-connectivity areas keep collecting, syncing, and acting on insights.

  • Offline data collection (PWA)

    Fill survey forms, record audio interviews, and capture responses entirely offline. Encrypted local storage (IndexedDB + AES-GCM). Background sync the moment connectivity returns. CRDT (Yjs) conflict-free merges.

  • Native mobile apps (Android + iOS)

    React Native + Expo, single codebase. Camera, microphone, GPS tag, push notifications, background sync via WorkManager / BGTask.

  • AI phone call collection (no internet, no smartphone)

    Azure Communication Services + Pipecat + GPT-5 Realtime Voice + Whisper-3 + ElevenLabs. Conversational surveys in 40+ languages over standard phone lines.

  • Low-bandwidth platform access

    Lite-mode web UI usable on 2G. Critical-path bundles < 150 kB gzipped. Service worker caches previously viewed classifications and reports.

  • Disconnected output distribution

    Downloadable AlgoNexta offline package (zip + JSON-LD). Distribute via USB, local Wi-Fi, or LAN. Optional Electron offline reader.

  • Server-side AI, always remote

    Field devices never need processing power for AI. Priority queue for newly synced field data — intermittent teams get actionable results fastest.

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