App Overview

Practice Farm: Etudes, Any Key icon

Practice Farm: Etudes, Any Key

Nicholas Mahon · Music

Practice Farm is a library of étude books, orchestral excerpts and Bach, rewritten on the spot for the instrument you play

$9.99

PRICE
$9.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
6 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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A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
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Goal: Send a clear invoice after finishing a job.

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Screen plan

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

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App evidence

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Screenshots

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App Store description

Practice Farm is a library of étude books, orchestral excerpts and Bach, rewritten on the spot for the instrument you play. Choose your instrument once. Every page comes out in your clef, in your range, in any key you want, with the fingerings on the notes and a band to play along with. YOUR INSTRUMENT, OVER THE MUSIC Your instrument is drawn above the page and moves with every note as the music plays: a trombone's slide, the valves of brass and horn, the keys of clarinets, oboe, English horn, bassoon, flutes and saxophones, the fingerboards of the four strings, and two or four mallets over glockenspiel, xylophone, marimba and vibraphone. Tap the hand in the panel's corner, tap a note, and choose your own fingering or position. The page prints your choice and the panel plays it, study by study. Mark any passage, keep it as a clip and loop it. Tap a tempo or expression word on the page and its meaning opens, in eleven languages. LINE MODE On a phone, read any page as one line that scrolls under you. Turn the phone on its side and the notes are big enough to read from the stand; tap once and everything but the music goes away. WHAT'S ON THE SHELF • 307 studies from Arban's Complete Method, by chapter • New: Mozart's concertos for clarinet, flute and bassoon, with the piano; Kreutzer and Wohlfahrt for violin; Sachse, Guilmant and Saint-Saëns for trombone and piano • Weissenborn for bassoon, Ferling for oboe, Rose for clarinet, Andersen for flute, Concone for bass and for voice • Bordogni, Kopprasch, Blazhevich, Slama, Bléger, Müller, Cornette, Belcke • Bach's cello suites, sonatas and partitas, and Telemann's fantasias • 414 orchestral excerpts for 13 instruments • 275 traditional tunes • 365 Bach chorales in four voices 1,963 studies in 49 books, and room for your own. WRITTEN FOR YOU No more reading Bordogni in the wrong clef or Kopprasch out of your range. Tell Practice Farm what you play and every study is rewritten for it: a tuba gets bass clef and valve numbers, a trumpet gets its own transposition, a cellist gets string positions. 39 instruments, each with its own clefs, range and fingering system. ANY KEY Move a study up a semitone, down an octave, or into any key you name. Or take it around the circle of fourths or fifths and get one page with all twelve keys on it, with rest bars between them. PLAY ALONG Drums with a groove. A drone that follows the study when it changes key. And on the 178 studies printed with a piano part, the pianist. Set a tempo by tapping, get counted in, take the repeats. BACH CHORALES Four parts: soprano, alto, tenor and bass. Choose an instrument for each one, a trumpet on the soprano, a horn on the alto, a trombone and a tuba below, and the chorale is transposed on the spot, each part in the right clef and key for the instrument that plays it. Change an instrument and the part changes with it. Read all four parts on one iPad or split the score across two. A ready-made quartet for a studio class, a section rehearsal, or colleagues each reading their own part. YOUR OWN MUSIC Import any MusicXML file and it works like every other study. Export any page as a PDF for a student or a teacher. THE INSTRUMENTS Violin, viola, cello, double bass, guitar, bass guitar, ukulele, flute, piccolo, alto flute, descant and treble recorders, oboe, English horn, clarinets in B flat, A and E flat, bass clarinet, bassoon, contrabassoon, soprano to baritone saxophones, trumpet, French horn, alto, tenor and bass trombones, euphonium, tuba, soprano, alto, tenor and bass voice, glockenspiel, xylophone, marimba and vibraphone. WORKS OFFLINE The whole library is inside the app. Every study, every key, every instrument and the band all work with no internet connection, on a plane or in a practice room with no signal. No account and no subscription. One purchase, for iPad and iPhone. In English, French, German, Italian, Spanish, Portuguese, Dutch, Polish, Japanese, Korean and Simplified Chinese.

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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

Generous offline download limits

Assumption to check: Can't play offline

Validate with people who use this workflow before building.

Hypothesis 2

Better personalization with explicit feedback

Assumption to check: Algorithm doesn't understand taste

Validate with people who use this workflow before building.

Hypothesis 3

Limited on-demand plays for free users

Assumption to check: Shuffle-only on free tier

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

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Check the hard parts

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

SUGGESTED BUILD STACK
React Native
Expo AV
Supabase
RevenueCat
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.