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
PadLab - Live Pads
PadLab brings ambient pads, drums and instruments together for rehearsals, music creation and live performance
$1.69 · In-app purchases
PRICE
$1.69
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
42 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/
Preview a sample Build Kit No email needed
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 PadLab - Live Pads: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
PadLab brings ambient pads, drums and instruments together for rehearsals, music creation and live performance. Play on your iPhone or iPad screen, or connect a compatible MIDI controller. • Continuous pads in different keys, with transitions and level controls. • Drum Pads with kits, individual sound selection and batch sample import. • Live Loops, available as a standalone one-time purchase or included in PadLab Full App, for creating patterns and recording quantized drum hits in one-loop or overdub mode. Arrange scenes, build your own kits and explore Gospel/worship presets. • A Live Loops mixer with volume, pan, mute, solo and convolution reverb with individual sends for each drum part. • A metronome with adjustable tempo, time signature, sound and volume. • MIDI Learn for pads, drum parts, transport, volume and set selection. • Complete performance sets that bring together pads, drums, Live Loops and StageLab instruments and settings when used. Arrange them in Set List for quick access. • Import and export performance sets and Live Loops sets with the personal files they use. Performance packages can include your samples and SF2 files. • On-screen guides to help you learn the controls and revisit them whenever needed. StageLab is an optional expansion unlocked through an in-app purchase. Combine up to eight sounds, use library instruments or import SoundFont SF2 files. Adjust levels, keyboard ranges, MIDI channels, envelopes, EQ, compression and reverb. Per-sound effects include chorus, tremolo, auto pan, drive and Leslie. Master controls provide volume, separate gain up to +9 dB and MIDI Learn. Inside StageLab, the WAVE 3 synthesizer offers oscillator, filter, envelope and effects editing, plus an integrated arpeggiator and sequencer. Explore a bank of 24 ARP/SEQ presets, create your own sounds and save your presets. In the standalone app, WAVE 3 and Live Loops follow the shared metronome. The AUv3 extension lets you use instruments in compatible hosts; Live Loops playback is available only in the standalone app. In AUv3, WAVE 3 retains Local/Host clock options. PadLab Full App includes Live Loops and StageLab, including for existing Full purchasers. WAVE 3 arpeggiator and sequencer are included in StageLab at no additional charge. Previous standalone ARP/SEQ purchasers retain access to their legacy tools. Buying Live Loops alone does not unlock StageLab or all premium drum kits. Other optional sounds, kits and features are offered through in-app purchases. Factory content referenced by a set depends on the library and purchases available on the destination device.
Written user reviews are not shown here. Check current App Store reviews >
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
Offer a wider range of sound packs through in-app purchases.
Assumption to check: Limited sound selection can frustrate users.
Validate with people who use this workflow before building.
Hypothesis 2
Add features for layering sounds and saving multi-pad compositions.
Assumption to check: Difficult to create complex compositions.
Validate with people who use this workflow before building.
Hypothesis 3
Enable sharing pads and compositions on social media.
Assumption to check: Lack of social sharing features.
Validate with people who use this workflow before building.
Hypothesis 4
Implement an onboarding experience for new users.
Assumption to check: No tutorial or onboarding process.
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
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
Redux
react-navigation
expo-av
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.
