Car care
A car maintenance tracker that counts miles and months
Service intervals are "5,000 miles or 6 months, whichever comes first". Auto tracks both clocks at once and tells you which one lands first.
Open any car handbook and the service intervals read the same way: every five thousand miles or every six months, whichever comes first. Two clocks, and the one that matters depends on how you drive.
Most maintenance apps track one of them. Mileage-only apps tell someone who drives four thousand miles a year that their oil is fine when it has been sitting in the sump for eighteen months. Date-only apps tell a courier the same thing after thirty thousand miles.
Auto runs both clocks for every item and surfaces whichever is going to land first. Update the odometer and everything recalculates — due dates are worked out from your actual mileage rather than stored as a guess made months ago.
It also separates the things that renew on a date — registration, inspection, insurance — from the things that wear out with use. They behave differently, so treating them as the same kind of item only ever produces wrong reminders.
And because you are logging the work anyway, it keeps the cost. Fuel, parts, labour and renewals add up into what the car actually costs to run.

That app is Auto
Car maintenance that counts in miles and months at the same time.
Free for 30 days, then $12 a year.