I don't have a telematic device, but I can chime in as someone who has worked in the P&C insurance industry for a couple decades.
Telematics (the industry term for all those tracking devices/apps) exist because the insurance companies think it'll be more profitable for them in the long run to differentiate between different driving behaviors. Personal Auto is a tough business to be in: customers are extremely price sensitive, each state regulates insurance differently and imposes its own rules, and the product itself is almost identical across competitors (because of those regulatory issues). The entire industry has lost money on Auto since 2007.
If you were to apply telematics to any given population of drivers, you'd expect that the group would pay more than an identical group without telematics, because the carrier has to cover the cost of the devices, apps, marketing, and managing that additional data.
HOWEVER, the real benefit as an insurance carrier is twofold: (1) you can attract the very safest drivers who will stay with you because you can offer a discount no one else can compete with, and they will still pay you more in premiums than you pay out in claims/expenses, and (2) most people think they're very good drivers, even when that's clearly not true at all, so they'll agree to telematics up front and then get gouged on the back end.
So, what's a driver to do?
First, only agree to telematics if you are very, very sure that you're an extremely safe driver by the carrier's definition. If you do any of the following, never sign up at all: speed, use your phone, brake hard, swerve, or drive between midnight and 4am. Whether or not any of these make any sense in the real world conditions you're driving in is completely immaterial. On average, all of those things have been actuarially proven to increase risk, meaning the carriers can justify raising your rates. Logic doesn't matter to actuaries, only the math matters.
Second, find an independent insurance agent. These are agents who work with many different insurance carriers and know the ins and outs of all of these programs, which is different from agents who only work with one carrier (Allstate, State Farm, USAA, etc.). Their job is to shop around for you.
@FtWorthAtheist, if you tell an agent what you said here, they'll be able to make a suggestion for a different plan with or without telematics. (To find one, you can search "independent agents near me" and look through reviews, or ask a local group for recommendations. Most people don't know the difference between independent and captive agents, though, so look for one with multiple carrier names on their website.)