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AudraL'app di sicurezza personale che funziona anche con lo schermo bloccato

Di Kenneth Melchor, Fondatore & Direttore Tecnico

2026
iOS App DevelopmentFirebase BackendCloud Infrastructure
SwiftSwiftUIwatchOSFirebaseAWS SNSApp Store
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Questo caso studio descrive Audra, un'app nativa iOS per la sicurezza personale delle donne. Un solo gesto attiva una risposta d'emergenza simultanea: sirena ad alto volume, registrazione audio continua, tracciamento GPS in tempo reale, SMS ai contatti di emergenza con link di posizione live e chiamata automatica alla polizia opzionale — tutto in background con lo schermo bloccato. I soccorritori ricevono una pagina web live con mappa in tempo reale e indicatore di freschezza.


Existing safety apps fail at the moment they matter most — they require a screen tap, a passcode, a moment of calm. Audra was built for the opposite: phone in a pocket, one hand free, under stress. Every feature had to work silently in the background with the screen locked. Apple's background execution budget is narrow; a data race in an audio session kills the alarm silently. Getting Apple's Critical Alerts entitlement — which bypasses Do Not Disturb on responder devices — required a manual approval process with strict criteria.

Audra — The Challenge

10 Independent SOS Trigger Paths (button, widget, voice, volume combo, Apple Watch, fall detection)5 Simultaneous Evidence Streams (audio, video, screenshot, GPS trail, network forensics)AES-GCM On-Device Encryption via CryptoKit — Firebase never holds plaintextReal-Time Responder Web Page with Live GPS Map and Freshness BadgeAWS SNS SMS — 113-char single message across GB/ES/FR/DEApple Critical Alerts Entitlement — bypasses Do Not Disturb on responder deviceswatchOS Companion + WidgetKit Lock Screen Widget24-Country Emergency Number Auto-Dial Database
Audra — 10 Independent SOS Trigger Paths (button, widget, voice, volume combo, Apple Watch, fall detection)Audra — 5 Simultaneous Evidence Streams (audio, video, screenshot, GPS trail, network forensics)Audra — AES-GCM On-Device Encryption via CryptoKit — Firebase never holds plaintextAudra — Real-Time Responder Web Page with Live GPS Map and Freshness Badge

Every architectural decision was made under one constraint: it must work when someone's life depends on it. 10 trigger paths. 5 evidence streams. One gesture.


10

Independent SOS trigger paths — no single point of failure

5

Simultaneous evidence streams per SOS event

24

Countries with auto-dial emergency number

10

Locales supported at launch


100Velocità
100Accessibilità
100Buone Pratiche
100Ricerca
Online & mantenutoSEO ottimizzato

Mobile · Google PageSpeed Insights


97+

Punteggio Lighthouse su kaufast.com in tutte e quattro le categorie — verificato tramite Google PageSpeed Insights, giugno 2026

20+

Anni di consegna di soluzioni tecnologiche — fondata a Barcellona, 2004

50+

Progetti consegnati in 6 paesi e 3 continenti

< 100ms

Time to First Byte tramite Vercel Edge Network — tutti i progetti gestiti, nel mondo

Tutte le metriche sono verificabili in modo indipendente. Ultimo audit: giugno 2026.


Servizi Forniti

  • iOS App Development
  • Firebase Backend Architecture
  • Cloud Infrastructure
  • App Store Submission Pipeline
Servizi

Tecnologie

  • Swift 6
  • SwiftUI
  • watchOS
  • WidgetKit
  • AVFoundation
  • SFSpeechRecognizer
  • CryptoKit
  • CoreLocation
  • Firebase (Auth, Firestore, RTDB, Storage)
  • Cloud Functions (TypeScript)
  • AWS SNS
  • StoreKit 2
  • Fastlane
  • Leaflet.js

Team

  • iOS & watchOS Engineer
  • Backend & Cloud Architect
  • UX Designer
  • App Store Submission Lead
  • QA & Safety Testing

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