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.
App Overview
Guitar Pro
The Guitar Pro application allows all musicians to view and play sheet music and tablature created with the famous Guitar Pro tab-editing program for Windows and Mac.
$6.99 · In-app purchases
PRICE
$6.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.6
896 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.
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
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Guitar Pro: 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
Expand the library with user-generated content and community features.
Assumption to check: Limited song selection compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Implement adaptive streaming for better performance.
Assumption to check: Inconsistent playback quality.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the subscription process and provide clearer pricing information.
Assumption to check: Subscription management is confusing.
Validate with people who use this workflow before building.
Hypothesis 4
Add social sharing options to engage users and promote songs.
Assumption to check: No social sharing 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
The Guitar Pro application allows all musicians to view and play sheet music and tablature created with the famous Guitar Pro tab-editing program for Windows and Mac. This mobile version is the ideal companion for you to practice your favorite songs and share them any time, anywhere! Coming up with some arpeggio, a riff, a chord sequence? You can now note and save it all on the single-track tablature NotePad. Powerful score player • Supporting GP3/4/5/6/7/8 (.gp) and PowerTab (.ptb) file formats, • Tab (with rhythmics), slash, and standard notations, • Compatible with mySongBook portal to sheet music (monthly subscription and single buying), • Switch between Dark and Light viewing modes, • Load files via WiFi and web browser, iTunes, e-mail, • Integrated sheet-music library with search, filters, and favorites, • Multitrack player with soundboard: volume / solo-mute / soundbanks, • Metronome and visual countdown, • 3 zooming levels, • Guitar or bass fretboard (for right- and left-handers), and virtual keyboard, • On-the-fly tempo changes, • On-the-fly global transposing by half-tones, • Playing any selection in loops, • Simplified navigation between sections, • E-mailing files directly from the application, • Exporting files to PDF, • Compatible with the Fretlight Wireless Guitar. NotePad tool to create a tablature • Use the NotePad to edit a single-track tablature for guitar, bass, banjo, ukulele, and mandolin, • Tablature for 4- to 8-string instruments, • 19 built-in sounds, • Customizable tuning and tempo, • Export your ideas into Guitar Pro 6 and 7 formats so as to later carry on with your composition on the Guitar Pro desktop version. ———————————————————————- The app is updated frequently, so feel free to contact our team to ask any question or give your feedback. For more info: Need help: https://support.guitar-pro.com Facebook: http://www.facebook.com/arobas.music Twitter: http://www.twitter.com/arobasmusic Instagram: https://www.instagram.com/guitarpro_official FAQ: Q: Can I create or edit sheet music with this app? A: Unlike Guitar Pro for Windows and Mac, this app does not let you change the notation in an existing Guitar Pro file, or create sheet music in standard notation. It is however possible to edit a single-track tablature with the NotePad tool and export your work into .gpx and .gp formats to finish your composition in Guitar Pro 6 or 7. Editing a drum track is not available with the NotePad tool.
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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.
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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.
