We checked Simple Habit out earlier this year when it launched and found it to be one of the better apps out there in a crowded marketplace of mindfulness tools. There's a set of things you can try for free, and if you sign up for a subscription you'll get access to the full library. There are hundreds of different topics so you can focus on your specific needs -- from broader things ilke sharper focus and stress reduction to more niche things you might be dealing with like breakups or calm before a job interview.
Simple Habit has changed its pricing structure a few times, but currently the subscription options are $11.99 per month or $8.99 per month if you sign up for a full year. You can also get a lifetime subscription for the rather high cost of $399. Fortunately, there are plenty of free sessions you can try before signing up for a subscription.