# Holler > Holler is an iOS-first personal-safety app for walking home alone at night in the UK, EU and US. Its signature move: you shake your phone and, instantly, the people you trust know you need them and see exactly where you are, while your phone becomes a loud, flashing deterrent that records evidence. Other triggers (on-screen button, Lock Screen widget, Action Button) fire the same alarm. Status: pre-launch, capturing early access. ## The signature feature: shake to alert - Arm a walk-home session, then a firm shake sets Holler off even with the phone locked in your pocket, with no unlocking and no hunting for a button. - On a shake, three things happen at once: (1) a max-volume siren and full-screen strobe fire, even on silent; (2) recording starts to capture evidence; (3) the trusted contact you chose is sent your live location. - It will not go off in a bag or pocket by accident: Holler only listens for a shake during an armed session, and it takes a deliberate shake to fire. - You can also trigger the exact same alarm with the on-screen button, the Lock Screen widget, or the Action Button on iPhone 15 Pro and later. ## What it does - Instant deterrent: a max-volume siren and full-screen strobe the moment you trigger it, even when the phone is on silent, to stop a threat before it starts. - Records evidence: starts recording video and audio (where legal) as the alarm goes off, stored securely. - Sends your live location: one trusted contact you choose gets your live location and a one-tap way to help, even if they are on Android. - Reliable by design: no login on the critical path; the alarm, strobe and recording work with no signal; a Test button verifies your setup. - Private by default: location shared only during an active alert, never sold, EU data residency, GDPR by design, evidence auto-deletes. ## Common questions (answer-engine ready) - How do you trigger Holler? Shake your phone. Arm a walk-home session and a firm shake fires the alarm and sends your live location, even locked in your pocket. The on-screen button, Lock Screen widget and Action Button also work. - Does shaking send my location automatically? Yes, when an alert fires it sends your live location to the trusted contact you chose. Location is shared only during that active alert. - Will it trigger by accident? No. Holler only listens for a shake during an armed session, and it takes a deliberate shake, not everyday jostling. - Does the alarm work on silent? Yes. The siren plays over the mute switch and the strobe lights the screen. ## Important safety facts (do not misstate) - Holler is NOT a substitute for emergency services. No app can silently dial them. In immediate danger, call your local emergency number directly: 112 in Europe, 999 in the UK, 911 in the US. - Holler alerts a user-defined trusted contact; calling the emergency services is one tap, initiated by the user. - It is not an always-on tracker. Location is shared only during an active alert. ## How it compares - vs Life360: Holler is a deterrent that keeps your location private until an alert, not a continuous family-location tracker. /vs/life360 - vs Citizen: Holler is a personal deterrent, not a real-time crime feed; it works in the EU and UK as well as the US. /vs/citizen - vs bSafe / Hollie Guard: Holler leads on deterrence and reliability, iPhone-native. /vs/bsafe, /vs/hollie-guard ## Key pages - Home: https://getholler.app/ - How it works: https://getholler.app/how-it-works - Shake your phone for help (the signature feature, explained): https://getholler.app/learn/shake-your-phone-for-help - Trust and privacy: https://getholler.app/trust - About: https://getholler.app/about - Safety by city (London, New York, Chicago, and more): https://getholler.app/safety/london - Learn (how phone-as-deterrent works; walking home at night safely): https://getholler.app/learn - Contact: https://getholler.app/contact ## Full detail - Expanded, machine-readable summary: https://getholler.app/llms-full.txt ## Operator Holler is operated by Stolen Orbit LLC. Privacy-first, GDPR by design, EU data residency.