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
TEFpad
TEFpad is a tablature editor designed for the iPad that implements most features available in the TablEdit desktop program
$5.99 · In-app purchases
PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
44 ratings · Top 30%
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 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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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 TEFpad: 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
Enhance editing tools to be more robust and user-friendly.
Assumption to check: Limited score editing capabilities compared to desktop apps.
Validate with people who use this workflow before building.
Hypothesis 2
Provide clearer explanations and demos of premium features.
Assumption to check: In-app purchases can be confusing for users.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the UI for a cleaner experience.
Assumption to check: User interface can feel cluttered with too many options.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize the app for better performance with large tablature files.
Assumption to check: Performance issues on larger score files.
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
TEFpad is a tablature editor designed for the iPad that implements most features available in the TablEdit desktop program. It is also compatible with iPhone and iPod Touch. Just like TEFview for iOS, our free file viewer, TEFpad opens, displays, prints and plays all TablEdit files (.tef format). It imports as well many types of music files (ASCII tablatures, ABC files, MusicXML, MIDI, Guitar Pro, PowerTab...). In addition to this, TEFpad opens TabRite files and lets you create new tablature arrangements from scratch. The files you have created on your device with TEFpad can be edited and saved without any limitation. Warning: You can edit files not created with TEFpad or imported into TEFpad, but only the first 16 measures can be saved. Likewise the app does not allow copying the contents of one of these files into another .tef file. To get rid of these limitations, you can upgrade to TEFpad Pro (available as an In-App purchase). The .tef files saved with TEFpad can be opened and modified in the TablEdit desktop program that offers advanced capabilities not completely available in TEFpad. Please submit your suggestions and bug reports to http://www.tabledit.com/contact/feedback/ Specifications: - Open/Import TablEdit, ASCII, ABC, MIDI, Music XML, PowerTab, TABrite and GuitarPro files - Optical recognition of tablatures and scores (PDF or image) - Extracts TablEdit files contained in a zip archive - Display tablature and/or standard notation - English, French, German, Spanish, Japanese, Russian, Chinese and Italian language support - Embedded Help (tap the info button in the top-right corner of the screen) - File manager with subdirectory management - Email files as attachment - PDF export. The PDF can be emailed or opened in a third party app - iTunes file sharing - WIFI file sharing - Integration with the Files app - MIDI Playback with full real time control (speed, pitch, volume and MIDI instrument) - Metronome and count down settings - Ability to change the soundfont and to access all the presets - Playlist - Customize background color for screen, special keyboard, palettes, - Print to an Air Printer - ABC, MIDI, ASCII, WAV file, Music XML export - Time and Key signature setup along with a transpose feature - Measures management (Add/Delete/Copy/Move/Pick-up measure) - Instrument setup (String number, Tuning, Capo, Clef...) - Quantize notes (after a MIDI import) - Enter notes and rests in the tablature or standard notation - Edit notes (duration, velocity, special effect, staccato...) - Create chord diagrams - Insert text, tempo changes, pick strokes and fingerings and format them - Reading guides (repeats and endings) - Fingerboard or keyboard view - External keyboard support - Support for Page turners - Print options dialog - Support drum tabs and pedal steel guitar tabs - Simple grace note management - iPad Pro support
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.
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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.
