Yes!

You are able to inactively progress up until 99% of your highest stage reached. For example, if your max stage is 1000, you can progress inactively until stage 990. This works similarly with tournaments, but instead of 99% of your actual max stage, it will look at your tournament max stage. This means you cannot inactively increase your tournament max stage.

Inactive progression will start after five minutes of inactivity, so you’ll want to ensure your game stays closed until you’re ready to start playing again. This five-minute cooldown will reapply every time you open your game.

Inactive progression is based on two main factors. One is your Sneak Count, which determines how many titans you can inactively progress through every five minutes of inactivity. For example, if you were to be inactive for 30 minutes and with a Sneak Count of 100, the first five minutes would be taken up by the cooldown, and then you would progress 100 titans every minute for a total of 500 titans. As a result, the second main factor of inactive progression is the number of titans you have per stage. Taking that same example above, if you have been inactive for 30 minutes, your Sneak Count allowed you to bypass a total of 500 titans. If you have 14 titans per stage plus the 1 boss titan, you would move 500 / (14 + 1) = 33.333 stages in that 30-minute window.

You can increase your Sneak Count by leveling your Silent March Talent and/or completing the Sly Wolf legendary set.