App Overview

Smule: Sing, Duet & Record icon

Smule: Sing, Duet & Record

Smule · Music

Sing, duet, and create music on Smule, a creative singing platform built to help you grow your voice with confidence

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
182,479 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.

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Build Kit

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

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What's included18 files

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

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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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.

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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 Smule: Sing, Duet & Record: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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App evidence

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

Screenshots

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App Store description

Sing, duet, and create music on Smule, a creative singing platform built to help you grow your voice with confidence. Join others in duets for free, or unlock solo recording when you are ready to practice, learn, and craft your sound. Explore 15 million+ songs across pop, rock, R&B, country, K-pop, musicals, and more. Smule gives you the space to practice, improve, and explore your voice at your own pace, whether you are singing for fun or working toward becoming a better singer. On Smule, you can begin by joining existing duets with singers from around the world at no cost. Singing together is a low pressure way to start, helping you learn by doing while building confidence through shared performances. With a VIP subscription, you can unlock solo recording and start your own duets or group songs, giving you more control to practice independently, refine performances, and shape your sound. Smule offers one of the largest karaoke song libraries available, with new songs added regularly. You can also sing recorded duets alongside official tracks from global superstars. Smule lets you join pre recorded duet performances featuring artists like Ed Sheeran, Dua Lipa, Olivia Rodrigo, and Disney favorites, so you can learn songs you love and feel part of the music. As you sing, Smule helps you improve naturally over time. You can practice with pitch guidance, adjust song keys to better fit your vocal range, and experiment with harmonies, layers, and arrangements. Whether you are practicing solo, joining duets, or creating group songs, Smule supports progress at every stage of your singing journey. Smule uses studio quality audio and voice effects to support creativity without replacing your unique sound. You can enhance recordings with reverb, filters, and vocal effects, explore optional AI powered tools to refine tone and range, and experiment freely while keeping your voice authentic. These tools are designed to help you learn, improve, and gain confidence as you sing. Smule is a global community of singers in more than 190 countries. You can join duets, create group songs, discover new artists and styles, participate in live singing sessions, or share performances when you feel ready. Many singers start by practicing and joining duets, then gradually unlock more creative options as their confidence grows. Smule is built for every kind of singer, from curious first timers and casual karaoke fans to aspiring artists developing their voice. There is no single right way to use Smule. You choose how you practice, how you perform, and how far you want to go. Smule is more than a karaoke app. It is a creative platform for learning to sing, practicing with purpose, building confidence, and growing through solo recordings, duets, and musical collaboration, powered by smart tools and a supportive global community. Download Smule and start singing today. Subscription Info Get unlimited access to Smule’s full karaoke song catalog and sing karaoke solos, duets, groups, or acapella. Subscriptions are available weekly, monthly, or yearly. Payment is charged to your iTunes Account at purchase and renews automatically unless canceled at least 24 hours before the end of the current period. Manage or turn off auto-renew in your Account Settings. Subscriptions cannot be canceled during the active period. Unused trial time is forfeited when a subscription starts. - You can read our privacy policy at www.smule.com/privacy - Prices are equal to the value that "Apple's App Store Matrix" determines is the equivalent of the subscription price in $USD https://www.smule.com/termsofservice

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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

Offer a larger library with premium features.

Assumption to check: Limited song selection for free users.

Validate with people who use this workflow before building.

Hypothesis 2

Provide an ad-free tier for subscribers.

Assumption to check: Frequent ads disrupt the singing experience.

Validate with people who use this workflow before building.

Hypothesis 3

Implement a better social discovery feature.

Assumption to check: Difficulties in finding friends or collaborators.

Validate with people who use this workflow before building.

Hypothesis 4

Simplify navigation and increase accessibility.

Assumption to check: User interface can be cluttered.

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
Supabase
React Navigation
Zustand
React Native Reanimated
BUILD KIT DIFFICULTY
Expert

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.