Ads are removed by subscribing to the Premium Plan from "Premium Service" in the settings screen. While your subscription is active, you can use the app without ads.
The Premium Plan is a Google Play subscription (monthly or annual plan) that renews automatically until you cancel it.
If the price feels a little high, we hope you can think of it as buying a real paper planner from a bookstore. Thank you for considering it.
If ads appear again after switching devices or reinstalling the app, tap "Premium Service" → "Restore Subscription" in the settings screen. As long as you use the same Google Account, ads are hidden again without paying again.