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.
See your pitch and volume live as you speak — record, measure, and track your voice for speech therapy, voice training, and singing.
$17.99 · 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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Generating… usually about a minute.
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 Voice Analyst: Pitch & Volume: map the core Medical 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: Users find the app can be unintuitive to navigate.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Some users report issues with audio recording quality.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited customization options for analysis results.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchase process can be confusing.
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.
See your pitch and volume live as you speak — record, measure, and track your voice for speech therapy, voice training, and singing. Voice Analyst is used in speech pathology clinics, research centers, universities and homes in more than 180 countries, with over 12 million recordings made. Winner of the Digital Health Award (Medilink SW Healthcare Innovation). Listed in the Parkinson's UK tech guide: https://techguide.parkinsons.org.uk/catalogue/voice-analyst One purchase for iPhone, iPad and Mac. No subscriptions. MEASURE YOUR VOICE • Watch live graphs of your pitch (in hertz or musical notes) and volume as you speak or sing. • Record your voice and play it back alongside its pitch and volume traces. • See statistics for any recording, or any part of it: minimum, maximum, average and range for both pitch and volume. • Set pitch and volume targets and see instantly when your voice is inside them. • Zoom in on any part of a recording to analyze it in detail, and save any portion. • Split View and multitasking support on iPad. MADE FOR SPEECH THERAPY • Practice between appointments with the targets your speech-language pathologist sets — including the loudness targets used in programs such as LSVT LOUD for Parkinson's. • Track progress over time with saved recordings and statistics. • Use it in clinic, at home, or in remote telehealth sessions. SHARE WITH YOUR THERAPIST • Email recordings and statistics to your speech-language pathologist, or share by messaging and AirDrop. • Save recordings to your device, or to iCloud, Dropbox and other cloud storage. • Copy statistics into spreadsheets for records, reports and research. WHO USES VOICE ANALYST • Speech-language pathologists (SLPs) and therapists measuring clients' pitch and loudness, in clinic and via telehealth. • People in voice therapy — for Parkinson's disease, stroke, brain injury, dysarthria, vocal fold palsy, muscle tension dysphonia and other voice difficulties. • Transgender and non-binary people training their voice with clear pitch feedback. • Singers, actors, teachers and presenters monitoring and developing their voice. • Researchers and students measuring voice objectively. PRIVATE BY DESIGN • Your recordings stay on your device unless you choose to share them. • Nothing is uploaded to our servers — clinicians stay in control of client recordings. • GDPR compliant — no personal data is collected. • Works offline — record and analyze anywhere. WHAT USERS SAY "Fantastically easy to see where your pitch is, to set target ranges, to make and analyze recordings, and to export and import recordings. I can't imagine working on my voice without this app." "I've been using Voice Analyst with my transgender clients. It is incredibly user friendly and provides great visual readings of frequency as well as an instant analysis of pitch range and mean. My clients can use it in session and some have downloaded it to work with at home." "Love this app. So simple to use yet it packs all the technology needed to make it easy for me to monitor and motivate myself." Voice Analyst is not a medical device — it measures and records your voice; it does not diagnose or treat any condition. If you are concerned about the quality of your voice, see your doctor and ask for a referral to an Ear, Nose and Throat (ENT) specialist. Questions or ideas? Email [email protected] — we would be delighted to hear from you.
Written user reviews are not shown here. Check current App Store reviews >
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.