FlowLock: Focus Music
Deep work, study & sleep
Free · In‑App Purchases
Six states for six kinds of work: Deep Focus, Active, Study, Create, Unwind, Sleep. Wordless music your brain locks onto. One payment, yours forever. No subscription.
Music engineered to lock you in. Pick a state, press start, and FlowLock builds a sound field tuned to exactly what your brain needs to do next, then gets out of your way.
Each of the six states plays a wordless, evolving piece of music whose volume pulses at a specific rate, and your brain naturally follows that pulse. It's the same kind of amplitude-modulated music validated in peer-reviewed research for supporting sustained attention. It's not binaural beats, and not a tone hidden under the music. The music itself is the pulse.
SIX STATES, ONE FOR EVERY KIND OF WORK
- Deep Focus: peak concentration for hard problems, coding, writing
- Active: energized alertness for admin, planning, tactical work
- Study: calm absorption for reading, courses, retention
- Create: open, associative flow for design and ideation
- Unwind: decompression and reset when the work is done
- Sleep: a slow descent into delta for sleep onset
BUILT TO DISAPPEAR
- Start a session, lock your phone, drop it in your pocket, and the music keeps playing with lock-screen controls.
- Every session eases in: the pulse glides up to its target rate so you settle, not startle.
- Beautiful, calm, alive. Visuals that move with the music, and hold perfectly still if you use Reduce Motion.
- Lock Quality scores how undisturbed each session was, so you can watch your focus improve week over week.
ONE PAYMENT. NO SUBSCRIPTION. EVER.
Buy it once and it's yours. All six states, every sound bed, no recurring charges. No account, no email, no ads, no data collection. Everything lives on your device and works fully offline.
Made for people who just want to sit down and get into it.
FlowLock is designed to support focus and relaxation. It is not a medical device and is not intended to diagnose, treat, or cure any condition. Effects vary from person to person.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
FlowLock 2.0 is a ground-up rebuild of the sound.
- Six all-new composed beds, each a piece of music engineered to pulse at your target focus rate.
- An eased-in "lock-in" ramp: the pulse now glides up to speed as your session begins.
- A refreshed design and a brand-new app icon.
- Same promise: one payment, no subscription, no ads, nothing collected.
The developer, Rapid Sync IT LLC, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Rapid Sync IT LLC
- Size
- 217.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Unlock FlowLock $19.99
- Copyright
- © 2026 Rapid Sync IT LLC