Spindles vs Harmonic.Audio Tuner

Created by Dudadius—composer Bryan Rheude—Spindles is original music and handcrafted sonic environments for focus, sleep, calm, and movement. Acoustic piano, analog and modular instruments, field recordings, custom noise, and binaural sound are composed and shaped by hand. Research informs the craft. The music leads. TODAY’S ATMOSPHERES Four fresh daily starting points—Mellow Focus, Beat Focus, Sleep, and Soothe. One tap to begin in the app or from a Home Screen widget. FOCUS COLLECTION Three paths into sustained attention: expansive Harmonic Fields, evolving Melodic Focus, and rhythmic ADHD Beats. SLEEP SPINDLES A guided journey through Fall Asleep, Stay Asleep, and an optional Wake Transition. Choose your own combination or begin with today’s rotating selection. EXPLORE Browse by state, sound, or intention—from acoustic piano and natural environments to custom noise, binaural sound, meditation, movement, and more. 14 DAYS OF FULL ACCESS Create a free profile and listen for 14 days. No payment information is required. Subscription options appear only after the trial ends. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

A fast, focused guitar tuner that does the job to perfection, nothing more, so you can spend your time jamming. Built to be trusted, not to keep you in the app. Made by guitar players for guitar players as the tuning app when you need it.