LOCKY — anti-theft alarm for your iPhone

Stop someone from walking off with your iPhone.

LOCKY turns your iPhone into a self-defending device. Leave it on a café table, on the beach, at the gym — if someone tries to take it, the siren goes off. Your Apple Watch lets you know when you are the one walking away without it.

Works in the background, on iOS 17+ and watchOS 10+

No cloud, no tracking — your data stays on the device

Pro features free for 7 days, then optional subscription

Three ways to protect your iPhone.

Distance Guard

Lock your phone to a spot. If it moves more than the radius you set, the siren fires. The default 15 metres works for cafés, libraries and offices.

Active Guard

For bars, beaches and parties. The screen stays on — the moment your iPhone is lifted off the table, you have a few seconds to enter your PIN. Don't enter it? The alarm wakes the room up.

Anti-loss for Apple Watch

Your Watch and your iPhone keep an eye on each other. Walk out of the office without your phone — the Watch buzzes. Leave the gym without your Watch — the iPhone tells you.

How it works.

Set a PIN.

The PIN is what stops someone from disarming the alarm with your phone in their hand. Stored only in iOS Keychain — never in the cloud.

Pick a mode and arm.

Slide the lock slider on the home screen. Distance Guard for stationary scenarios, Active Guard for situations where you need an instant reaction.

Walk away with peace of mind.

The siren, vibration and torch flash kick in if your phone is moved. Disarm with PIN, biometrics or your iPhone passcode.

Where LOCKY is at its best.

Most phone theft is opportunistic — three seconds, one quick grab. These are the places where it really happens.

Café & restaurant

You step away for a refill or a refill of cutlery. The phone is on the table for 30 seconds — that's all an opportunist needs.

Bar & pub

Loud music, people moving past your table all night. Active Guard fires the moment someone lifts your iPhone, even if you don't notice.

Mall food court

Plastic chair, plastic table, hundreds of strangers. You go grab napkins — your phone stays armed.

Airport & lounge

Charging at the gate, dozing at the lounge sofa. Phones disappear from airports more often than people think — Active Guard keeps a constant eye.

Train & bus

You're on a long ride, phone on the fold-down tray, you start to drift off. Anyone reaching for it from the aisle triggers the siren.

Beach & pool

You're in the water, your phone is on the towel. Active Guard makes sure that the second someone bends down to pick it up, the siren goes off.

Gym & locker room

Phone on the bench while you do a set, or in an unattended locker zone. Active Guard fires the moment someone tries to grab it.

Barbershop & salon

You can't move your hands for 40 minutes. Your phone stays on the counter and watches itself.

Hotel lobby & coworking

Common areas full of strangers — exactly where opportunistic phone theft thrives. LOCKY turns "I'll be back in two minutes" into a safe two minutes.

Why Apple Watch matters.

Half of all "stolen" iPhones are simply forgotten. LOCKY uses your Watch as a second pair of eyes:

If you walk away from your phone — your Watch buzzes within seconds.

If you leave your Watch behind — your iPhone alerts you.

Snooze alerts when you know what you're doing — gym locker, charging spot, partner's bag.

FAQ

Will LOCKY work if I close the app?

No. iOS does not allow third-party apps to run a siren after they have been swiped out of the App Switcher. LOCKY needs to stay running. We're upfront about this — there's a "How it works" page inside the app that explains every limit clearly.

Will the siren play if my phone is on silent?

Apple does not allow ordinary apps to fully bypass silent mode. LOCKY plays the siren as loud as the system allows and ducks any music — but if your phone is on silent, the result is not guaranteed. For full coverage, leave the ringer on while LOCKY is armed.

Does LOCKY upload my location anywhere?

No. Location data stays on your iPhone. There's no LOCKY server, no analytics service watching you, no cloud backup of where you've been. The app does not need an account.

Do I need an Apple Watch?

No. The two iPhone-only modes (Distance Guard and Active Guard) work without a Watch. The anti-loss features are an Apple Watch bonus.

What's free and what's paid?

Every feature is free for 7 days when you install the app. After that, the basics stay free: Distance Guard, one Safe Place, the standard siren and PIN protection. LOCKY Pro unlocks Active Guard, anti-loss for Apple Watch, unlimited Safe Places, all alarm sounds, sensitivity tuning and event history. Subscriptions are 1, 6 and 12 months.

Can I use LOCKY as a real anti-theft system?

LOCKY is a behavioural deterrent, not a guarantee. If your phone is destroyed, switched off or thrown into a Faraday cage, no app on iOS can save it. LOCKY is built for the situations where 95% of phone theft actually happens — opportunistic grabs in public places.