Spiritual meditation does require a spiritual teacher or master to guide you all the way until you reach that state where you find total bliss. This journey of meditation starts from basic meditation and progresses slowly, can take even several years for many or take a few months for few to get enlightened.
The best meditation apps are classified according to category. Like some might be useful to calm your mind or lower your anxiety and many are best for sleep or best for the newbies. You can check the app features and select the best meditation app according to your needs.