Lock Tess

Give your car a monster lock sound. Test with 2 sounds, then unlock premium to choose from over 30 sounds, import your own, favourite, categorise, rename, share, sync and more.
One app with a one-time unlock, for all your lock sounds. No subscription - ever

Lock Tess lets you customise your car's lock sound in seconds - all from your iPhone, iPad, or Mac.

Simply pick a sound from our built-in library or import your own, connect your USB drive to your iPhone, iPad or Mac, and tap Use. Lock Tess handles all the technical stuff automatically, creating the correctly named file your car needs. Plug the USB back into your glovebox USB port, enable USB as the sound in Boombox settings, and enjoy your new lock sound every time you walk away from your car.

--- SOUND LIBRARY ---
Over 30 hand-picked sounds ranging from funny to satisfying. Air horns, retro bleeps, dramatic stings, animal sounds and more.

--- IMPORT ANY SOUND ---
Found the perfect sound? Import it, Lock Tess accepts MP3, WAV, M4A, AIFF and FLAC files, automatically compressing, converting, and renaming to the exact format your car needs. Plus, for longer sounds, choose which part you want to use.

--- ORGANISE YOUR SOUNDS ---
Store all your lock sounds in one place. Search, filter, rename and categorise your sounds, mark your favourites for quick access, and share your sounds with friends via AirDrop, Messages and more.

--- YOUR SOUNDS, EVERYWHERE ---
Lock Tess works beautifully on iPhone, iPad and Mac. Unlock once and use everywhere. With iCloud Sync, your imported sounds automatically back up to iCloud and stay in sync across all your devices. Delete on one device, it disappears everywhere. Import on your iPhone, it appears on your Mac. Your sounds, always where you need them.

--- NO SUBSCRIPTION EVER ---
Lock Tess is free to try with the two included sounds. Then unlock the full experience with a single one-time payment. No monthly fees, no adverts, no surprises.

--- HOW IT WORKS ---
Pick a sound from the library or import your own
Connect your USB drive via an adapter
Tap Use - Lock Tess creates the LockChime.wav automatically
Save to the USB, then plug back into the glovebox USB port
Enable in Toybox - Boombox - Lock Sound - USB
Enjoy your new lock sound!

--- COMPATIBLE CARS ---
Compatible with most Tesla cars that are equipped with the Boombox feature and Pedestrian Warning System PWS speaker (usually from 2019 onwards) - if your car has Boombox in the Toybox menu, you should be good to go. Before you purchase there are 2 free sounds to test the full process.

--- FREE vs PREMIUM ---
Free: 2 built-in sounds to try the experience
Premium: Library of 30+ sounds, unlimited imports, iCloud sync across all devices, plus organise and store efficiently with search, categories, favourites, trimmer and more - one-time purchase for all your devices

Questions? Contact us at support@locktess.com