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.
Nanoloop combines sequencer, synthesizer and sampler in one package
$3.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for nanoloop: 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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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
Assumption to check: Limited sound customization options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Steep learning curve for new users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of offline capabilities
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Nanoloop combines sequencer, synthesizer and sampler in one package. It provides all functions for creating electronic music from scratch. - Easy to use sequencer, suitable for rhythm and melody - Automatisation of all parameters - 8 channels, each can be synth or sampler - 8 patterns per channel - Sample via microphone - Re-sample - Polyphonic FM-, PWM- and noise synth - Song editor with loop function - Send and receive projects via e-mail - WAV export - Sharing projects and audio in file sharing apps like Dropbox is possible when these apps are installed. - MIDI sync with other devices - Ableton Link The Synth Nanoloop's FM synth offers a maximum of flexibility within a small set of parameters. It comes with a stereo modulator detune effect and covers the typical clean bells and Rhodes-like sounds, spheric pads, thick beats and basses. The Sequencer The stepsequencer visualises the rhythmic structure in a compact 4x4 square matrix, making it very easy to lay out patterns. The Sampler Besides A/D envelope, loop function, start offset, tune and fine tune, the puristic sampler comes without effects. You can record up to 6 seconds via microphone or copy samples via iTunes. Share With nanoloop for iPhone, you can send your saved projects to other nanoloop users and your own PC via e-mail. If nanoloop is installed on the recipient's iPhone / iPod, she/he can simply tap on the file name in the received e-mail to start nanoloop and import the attached file so that it is available for editing. This makes collaboration very easy, multiple users around the world can work on the same project by simply e-mailing the file. Export Songs can be exported to a WAV file that is accessible via iTunes (simply drag & drop files in finder). The exported file is also copied to the clipboard so that it can be pasted in other apps that support pasting audio. If a file sharing app like Dropbox is installed, you can upload the file there. More information can be found at the nanoloop website: www.nanoloop.com
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.