Buy once. Keep it.
One payment, a licence key that never expires, and free updates.
ConTess talks to your car through your own Tesla developer application, that is what keeps your credentials on your Mac. Tesla verifies it with a one-off domain check, the same way Google does: a small verification file has to sit at a web address you control. The setup wizard creates the file and checks it for you, and free hosting works fine.
Under ten minutes, once. The file holds only the shareable half of your key. The half that can actually command the car never leaves your Mac.
- One payment, no subscription
- Free 2.x updates, forever
- 30-day refund
Almost ready.
ConTess is in the final stretch: the app is being signed and notarised by Apple, which is the last step before it can be sold and installed safely. It is not on sale yet.
Leave your email and you go on the waiting list. You will hear the day it is ready, and you get 10% off.
We use your address for this one thing: telling you when ConTess is on sale and sending your discount. No newsletter, nothing passed to anyone else, and you can ask us to delete it at any time.
You are on the list.
We will email you the day ConTess goes on sale, with your 10% discount. Nothing else.
Thanks, ConTess is yours.
Your licence key is below, and a copy is on its way to your email along with your receipt.
Set up once, then forget about it.
Install the app
Open the .dmg and drag ConTess into Applications. No installer, no background daemons you didn't ask for.
Run the setup wizard
It creates a signing key that never leaves this Mac, hands you the verification file ready to upload, and connects your own Tesla developer app. Three screens, each one checked for you.
Sign in with Tesla
Tesla's own login page issues the token. It is stored on your Mac, never on a server, because there isn't one.
Pair the key to your car
Scan the code with your phone and approve it in the Tesla app, once. From then on every command is signed on your Mac.
What you'll need
A Mac on macOS 14 or later, a free Tesla developer account, and a web address of your own where one small verification file can live. Free hosting is fine, the wizard hands you the file.
No account, no lock-in
ConTess has no sign-up and no cloud. Your data is a local file you can export to CSV whenever you like.
Updates
Free updates across the 2.x line. Download the new version and drag it over the old one.