App Overview

Flashnote Derby icon

Flashnote Derby

Luke Bartolomeo · Education

Flashnote Derby is a fun, effective way for kids to learn to read music through fast-paced note flashcard games.

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
3.8
109 ratings · Top 50%

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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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 Flashnote Derby: map the core Education 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

Allow users to design flashcards with different themes and colors.

Assumption to check: Limited flashcard customization options.

Validate with people who use this workflow before building.

Hypothesis 2

Implement better audio management for smoother playback.

Assumption to check: Inconsistent audio playback quality.

Validate with people who use this workflow before building.

Hypothesis 3

Redesign quizzes with gamification elements to enhance user engagement.

Assumption to check: Unengaging quiz interface.

Validate with people who use this workflow before building.

Hypothesis 4

Introduce social sharing or community features for collaborative learning.

Assumption to check: Lack of community features.

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

Flashnote Derby is a fun, effective way for kids to learn to read music through fast-paced note flashcard games. Perfect for piano, guitar, band, orchestra, and general music students, this teacher-created app turns note recognition into an engaging game that works equally well at home or in music lessons. ———— Learn to Read Music — Fast Each race is a fast-paced challenge: identify notes correctly as you learn to read music faster and speed your horse toward the finish line. Missed or slow answers allow the other horse to catch up. After each round, students can review the notes they missed— turning every race into a meaningful learning opportunity. ———— New! Practice Mode (No Timer, No Stress) Students can now choose a relaxed 'practice mode' with unlimited time for each note. Perfect for beginners, this mode builds accuracy and confidence before racing competitively. ———— Multiple Ways to Answer Players can answer flashcards in a variety of ways: • Play the note on any instrument. Flashnote Derby listens and recognizes what you play (including transposing instruments). • Use a MIDI instrument • Tap on-screen letter names • Or play notes on the on-screen piano keyboard ———— Fully Customizable for Any Student Tailor each drill to match your student’s level: • Treble, bass, alto, or tenor clef • Select specific note ranges or individual notes • Add sharps, flats, or full key signatures • Adjust time limits (or remove them entirely in Practice Mode) • Expand difficulty all the way up to five-and-a-half ledger lines above and below the staff. As skills grow, you can increase the challenge. Higher difficulty earns higher scores—keeping students motivated. ———— Multiple themes keep practice fresh In addition to the classic horse race, students can take flight with the whimsical Pretty Pegasus course, blast through an arcade-style space challenge in Ecliptic Encounter, or switch to the seasonal Reindeer Race during the holidays. ———— Built for Teachers, Loved by Students Flashnote Derby is designed to fit easily into lessons: • Quick to set up and perfect for a 1–2 minute warm-up • Send homework assignments directly to students • Track progress automatically • See which notes need more review Teachers see real improvement. Students stay engaged. Parents appreciate the progress. ———— Why Flashnote Derby Works Many students struggle because drilling note names feels boring and difficult. Flashnote Derby turns this essential skill into a game—one they’ll want to keep playing. A little daily practice adds up quickly, and students learn to read music with confidence. ———— Get on the road to confident music reading today! Download Flashnote Derby and help your young musician master notes with joy—not frustration.

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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
Zustand
React Navigation
expo-av
BUILD KIT DIFFICULTY
Intermediate

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.