App Overview

Endel: Focus & Sleep Sounds icon

Endel: Focus & Sleep Sounds

Endel · Health & Fitness

Focus, relax, and sleep through the power of sound

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
33,974 ratings · Top 15%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

Build your own version

Build Kit

Make this idea yours

A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Kit ready. Verify your email to download it.

What's included17 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

JavaScript is required to complete mailbox verification.

Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Endel: Focus & Sleep Sounds: map the core Health & Fitness workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

< Scroll to see more >
App Store description

Focus, relax, and sleep through the power of sound. Endel creates AI-powered sounds designed to support your everyday life. Backed by science, and enjoyed by millions worldwide. Endel is powered by its patented core AI technology. It takes inputs like location, environment, and heart rate, to create the optimal personalized soundscape. This happens on the fly and allows Endel to reconnect your state with your circadian rhythm. Get access to the following classic soundscapes at home, work, or on the move to relax, concentrate, and minimize distractions and brain fatigue: • Focus – boosts your productivity by helping you concentrate for longer • Sleep – soothes you into a deep sleep with soft, gentle sounds • Relax – calms your mind to create feelings of comfort and safety • Move – feel grounded and present while walking, hiking, or running ENDEL PREMIUM SUBSCRIPTION Alongside the classics, the Premium package contains the following Endel Soundscapes and features: • Colored Noise – choose one of 9 colors of noise to focus, relax, sleep, and mask outside sound • Study – improves concentration and keeps you calm while studying or working • Dynamic Focus – get your perfect productivity support with real-time sound tuning • Hibernation – nourish your ears with cozy sounds for cold-season slumber • Nature Elements – nurture the mind with sounds of nature, your way • Rainy Outside – cozy up to the gentle patter of rain, blended with sleep-aiding sounds • Recovery – revives your wellbeing with sounds engineered to lower anxiety • Spatial Orbit – venture into a more peaceful dimension with an immersive Spatial Audio experience • Focus Timer – the famous interval work method, upgraded with science-backed Focus sounds On top of the much-loved original Endel soundscapes, Endel works with innovative artists and thinkers to create unique experiences. These collaborative Endel Soundscapes are available for Premium users: • James Blake: Wind Down – prepare your body for sleep with soothing sounds from an award-winning artist • Grimes: AI Lullaby – supports sleep for babies and adults with original sounds and vocals from Grimes • Plastikman: Deeper Focus – a deep focus techno soundscape created with Richie Hawtin • Alan Watts: Wiggly Wisdom – soothing and motivation spoken word soundscape, infused with the playful wisdom from Alan Watts • Miguel: Clarity Trip – elevate your every step with original sounds from Miguel Endel Pacific is the patented technology that powers our apps and integrations. All soundscapes are available offline. Apart from the Premium sounds and features, Endel Premium users get access to the exclusive Apple Podcast shows. SUBSCRIPTION TERMS Skip the payment screen by tapping “X” in the top-right corner of the offer. The Free Edition of Endel will start automatically. You can get access to Endel Premium by subscribing to a recurrent plan of your choice or with a one-time Lifetime purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Payment will be charged to your Apple account at confirmation of purchase. Account will be charged for renewal within 24 hours of the end of the current period, and the cost of the renewal will be provided. Subscriptions may be managed by the user. Auto-renewal may be turned off by going to the user’s Account Settings after purchase. No cancellation of the current subscription is allowed during the active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. For more information: Terms of Use - https://endel.zendesk.com/hc/en-us/articles/360003558200 Privacy Policy - https://endel.zendesk.com/hc/en-us/articles/360003562619

Written user reviews are not shown here. Check current App Store reviews >

Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Allow more user-defined adjustments to soundscapes.

Assumption to check: Limited sound customization options

Validate with people who use this workflow before building.

Hypothesis 2

Implement offline capabilities for downloaded soundscapes.

Assumption to check: No offline playback

Validate with people who use this workflow before building.

Hypothesis 3

Simplify subscription tiers and clarify benefits.

Assumption to check: Subscription complexity

Validate with people who use this workflow before building.

Hypothesis 4

Integrate social sharing for users to share their favorite soundscapes.

Assumption to check: Lack of social sharing features

Validate with people who use this workflow before building.

Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Zustand
Firebase
react-navigation
expo-av
BUILD KIT DIFFICULTY
Advanced

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.