Music designed to support sleep, focus, and calm — composed by Dudadius, shaped by science, and purpose-built for daily use.
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Spindles is a carefully curated music and sound environment created by Emmy-nominated composer Bryan Rheude (Dudadius). The app features purpose-composed analog and acoustic music, immersive soundscapes, and gentle auditory patterns designed to support sleep, focus, and calm.
Rather than stimulation or alarms, Spindles emphasizes gradual transitions and sustained states — helping you drift into sleep, remain focused, or wake gently. The experience is informed by neuroscience and shaped by years of compositional practice, with a focus on clarity, restraint, and long-form listening.
Spindles is used by listeners seeking better rest, deeper focus, or relief from anxiety, tinnitus, or attention challenges — without hype, pressure, or distraction.
Version 2.0 introduces a refined listening experience, including Wake Transition, intelligent playlist flow, and flexible playback controls designed to fit naturally into daily routines.
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
I use Spindles for studying, work, and to relax. I am impressed with the quality and variation of tracks. There is a feature that allows a soundscape to play on top of the track, which is very unique. The soundscapes are original and enhance the listening experience. While I mostly use it for focus, I have also enjoyed it during working out, everyday listening, etc. I highly recommend Spindles!
Developer Response
Thanks, buddy (I just figured out how to respond to reviews, haha!) -BR
We love this app!
Jz1010!
I’ve been using spindles to help my boys focus during homework and to help them relax and fall asleep at night. The quality and effectiveness of the sounds is unlike any other soundscape app I’ve used. There is a wide variety which is really nice. The boys love it and so do I. We highly recommended Spindles.
Developer Response
Thanks for the insights on how you use Spindles and thanks for the review. 😉
Worth it
Himynameisgracehowru
Really cool app obviously made by a real artist. Not like other music apps because of its uniqueness and diversity. I originally got it for sleep but now I also use it for that flow state jam mode, when I’m journaling, working on a project, taking walks, or just craving a nice vibe to add to the moment. You should try it!!!!!!!!!
Developer Response
Wow, thank you so much for the kind words. Makes me happy that it connects! Cheers, BR
5 stars all around
alkuc
Spindles has been incredibly impactful when it comes to helping me fall asleep at night. It is truly an amazing tool with a wide variety of quality tracks to choose from. Would highly recommend!
Developer Response
Yay! Glad you find it useful and thank you for the kind words. 🙏🏻
UX refinements
Version 2.4
The developer, Redsquared Inc, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Contact Info
Other Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More