Is there any meditation timer app on iPhone?

Hello greytigyr.

Thank you for using Apple Support Communities. The iPhone has a built-in timer, however it doesn't have the option for meditation: Use the timer or stopwatch on iPhone - Apple Support

Apple Fitness+ does have a meditation option for workouts. Learn more about it here: Fitness+ introduces workouts and meditations with SharePlay - Apple & Listen to guided Meditations on Apple Watch (Apple Fitness+ subscription required) - Apple Support

If you do use an Apple Watch, the Mindfulness app uses guided Meditations, as mentioned here: Use Apple Watch to practice mindfulness - Apple Support

The Mindfulness app  on your Apple Watch encourages you to set aside a few minutes a day to focus, center, and connect as you breathe. With an Apple Fitness+ subscription, you can listen to guided Meditations on Apple Watch.

If these options don't work for you, we recommend that you visit the App Store and see if you're able to find any third-party apps for meditations. We also encourage. you leave Apple feedback on things they can change or update here: Feedback - iPhone - Apple

Thank you for using Apple Support Communities. Cheers.