App Overview

Tunable – Tuner & Metronome icon

Tunable – Tuner & Metronome

AffinityBlue · Music

Join more than a million musicians and improve your playing with Tunable - Music Practice Tools

$7.99 · In-app purchases

PRICE
$7.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.8
6,832 ratings · Top 5%

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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What's included19 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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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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> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for Tunable – Tuner & Metronome: 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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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

Add support for more instruments and customizable tunings.

Assumption to check: Limited instrument support

Validate with people who use this workflow before building.

Hypothesis 2

Enhance metronome with advanced features like polyrhythms.

Assumption to check: Basic metronome features

Validate with people who use this workflow before building.

Hypothesis 3

Integrate social sharing for users to share their tuning achievements.

Assumption to check: No social sharing options

Validate with people who use this workflow before building.

Hypothesis 4

Introduce a subscription model with a free trial.

Assumption to check: High one-time purchase cost

Validate with people who use this workflow before building.

App evidence

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

App Store description

Join more than a million musicians and improve your playing with Tunable - Music Practice Tools. More than a chromatic tuner, tone & chord generator, metronome, and recorder, Tunable is a music practice coach that can help you play steadily, in tune, and on beat anywhere you go. Jam-packed with features to help with ear training, breath support, rhythm, timing, and dynamics, Tunable is easy to use yet feature-rich. Tunable tracks your playing habits and gives feedback to help you improve. Equipped with a unique “tuning history” display for viewing pitch as you play, an easy to use metronome and a handy audio recorder, Tunable is the perfect toolkit for beginning to professional musicians. Grab Tunable today and use in your next practice session, group rehearsal, band class, or live performance. Why are Broadway musicians, students at Juilliard, National Youth Orchestras and beginning instrumentalists using Tunable? GET FEEDBACK ON HOW YOU PLAY • It's like a music instructor in your pocket. Record a practice session and get a practice score with note graphs to help summarize your playing. LEARN TO PLAY IN TUNE WITH SUSTAINED PITCH HISTORY™ • Visualize how steadily you play or sing. The straighter the white line, the more consistent the pitch. IMPROVE YOUR EAR WITH TONE AND CHORD GENERATOR • Use the tone and chord generator to play and sustain chords with various tone options. Toggle between different temperaments to hear how they compare. KEEP TEMPO WITH AN ACCURATE METRONOME • See the pulse with a visual metronome. View subdivision and current beat, with a large display and (optional) visual flash. RECORD YOUR SESSIONS AND SHARE WITH EASE • Record practices and performances. Add reverb for a professional sound. Share recordings with family, friends, and teachers. FEATURES OVERVIEW TUNER • Large, colorful tuning indicator clearly shows when in tune (green fills the screen) • Clear, visual tuner with note, octave, cents (+\-), and frequency (Hz) display • Sustained Pitch History™ tuning display to see how you’re sustaining notes over time • Especially suited for wind instruments, strings, and vocals with note detection from Tuba to Piccolo • Adjustable A=440 reference tone • Create your own or change between Equal, Just, Pythagorean, and 15 other tuning temperaments TONE AND CHORD GENERATOR • Chromatic Tone Generator and Full Piano with multiple tone options • Play and sustain single notes or chords • Continues playing when the screen is locked or in the background METRONOME • Large number display with optional visual flash to see the downbeat and each subdivision • Adjust tempo, beats per measure, and subdivision to fit your needs • Accent or mute individual subdivisions • Sync metronome to nearby devices so they run at the same tempo and in time (via Ableton Link) • Select from over 30 metronome sounds • Tempo Tap (tap metronome center to set a tempo) • Continues playing when the screen is locked or in the background RECORD PRACTICE SESSIONS • Record and save unlimited recordings • Receive a score and individual note graphs per recording • Organize recordings into folders • Search by name to find past recordings • Easily share recordings and practice scores • Playback recordings at 0x - 3x speed AND MORE • Transpose notes to any instrument • 15 Notations to choose from • AppleTV/AirPlay mirroring • Dark and light themes • Siri Shortcuts access to common tasks Tunable is especially great with voice, wind, and string instruments: • Guitar, Ukelele • Piccolo, Flute • Oboe, English Horn, Bassoon • Clarinet • Saxophone • Trumpet and Cornet • French Horn • Tenor and Bass Trombone • Euphonium and Tuba • Violin, Viola, Chello, and Bass • Voice TESTIMONIALS • "The best tuner, metronome, and recorder on iOS and a pitch-perfect bargain for any musician." — MacLife • "Tunable shows musicians what pitch-perfect means as they play." — Engadget • "Tunable doesn't just tell you how you sound -- it shows you." — FastCoDesign

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

Screenshots

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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
expo-av
zustand
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.