Rideshare
Not only the miles with a passenger: driving to a pickup and between rides while you are working counts too, and an app's yearly summary may not show all of them. odo records every drive, so your log does.
Solutions
For work that happens on the road
If you are self-employed and drive for the work, the business miles are a deduction. Which drives count depends on the work — here is what it looks like for each.
Delivery
The drive to the restaurant or store, on to the customer and on to the next order are business miles. A day of short hops is exactly what is easy to miss when you log by hand.
Construction
Drives between job sites and to suppliers are business miles. The drive from home to a site counts only in the cases the IRS allows — a temporary site outside the area where you normally work, for example.
Real estate
Showings, listing appointments, open houses, inspections and closings: the drives to them and between them, and to meet clients, are business miles.
Freelancers
Drives to clients, to pick up supplies and to work away from your usual place count. If your home office is your principal place of business, the drive from it to a client counts as well.
Small business
Bank deposits, supply runs, deliveries and client visits made for the business are business miles; the drive to your regular shop or office is commuting and is not.
One rule is the same for everybody: the drive from home to your regular place of work is commuting, and commuting is never deductible. The blog post on what counts as a business mile goes through the rules in detail.