how we use your data

short version: your vehicle file belongs to you. ddpc stores it so you can read it back. we do not sell individual-user data. we will only share aggregate data with the repair and parts industry if you opt in, and even then we strip anything that points to you.

what we collect

the things you put into ddpc on purpose:

account info: email, password hash, display name.
vehicle records: year, make, model, vin, odometer, trim, photos, and anything else you add to a vehicle profile.
ownership log: maintenance entries, fuel fill-ups, parts installed, modifications, service intervals, issue reports, receipts.
obd data from ddpc-connect: live readings your phone pulls from the vehicle (rpm, speed, coolant temp, maf, fuel trim, diagnostic codes, and similar), linked to the vehicle in your garage. only sent to our servers if you have ddpc pro. the diagnostic log used to debug connection issues stays on your phone unless you explicitly upload it for a bug report.

the things we collect automatically to keep the app working:

session info: ip address, device type, browser, and pages you visited. used to keep you signed in, debug problems, and block abuse.
basic analytics: which features get used, counts and durations, not tied to your identity in our analytics tools.

where it lives

your data lives in a supabase postgres database we control, hosted on amazon web services in the united states. backups are encrypted. only a small set of administrators at ddpc can reach it, and only when they have a specific reason. row-level security rules inside the database enforce that you can only read and write your own vehicle records, even from inside the system.

what we do with it

give it back to you. the main job of ddpc is to store your ownership record and show it to you in useful ways. charts, summaries, anomaly flags, and ai insights if you subscribe.
make the app work. process payments, send transactional emails, keep you signed in, prevent abuse, fix bugs.
learn about ddpc at the product level. things like "how many users added a vehicle this week" and "what percentage use fuel tracking." never tied to individual users in anything we share.

what we do not do

we do not sell your individual-user data. not to insurers, not to advertisers, not to anyone.
we do not share your location, trip logs, or driving behavior with third parties without your explicit opt-in.
we do not read your vehicle data to score you or report you to anyone. your file is yours.
we do not use dark patterns to trap subscribers. you can cancel pro any time and keep your data.

the aggregate data question

ddpc only makes sense at scale if the industry can see that people who drive themselves are a real, visible demand signal. parts manufacturers, independent shops, and researchers can work better when they can see patterns in how vehicles are actually owned. that is the collective half of what ddpc is for.

we want to share aggregate, anonymized data with those groups. we do not do it yet. when we do, it will work like this:

sharing is opt-in. default is off. we will ask you in plain language before turning it on.
only aggregate data is shared. counts, averages, distributions across many vehicles. never your individual records.
identifying fields are stripped before anything leaves our database. your vin, email, address, precise location, and account id are never part of a shared dataset.
you can turn it off at any time in account settings.

your rights

you can do any of the following at any time:

see what we have on you: request an export of your full account data.
correct it: edit any vehicle record from inside the app, or email us.
delete it: delete your account from account settings. we purge your records within 30 days.
take it with you: data export is available in standard formats so you can move it wherever you want.
opt out of anything optional: analytics, aggregate data sharing, marketing emails.

questions

the formal versions of this live in our privacy policy and terms of service. if anything on this page seems off, contradicts what we actually do, or you want a specific question answered, email us at myddpc@gmail.com and we will answer.