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.
VoiceMap tours are like podcasts that move with you, to tell stories about what you’re seeing right now
Free · 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 VoiceMap: Audio Tours & Guides: map the core Travel workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
VoiceMap tours are like podcasts that move with you, to tell stories about what you’re seeing right now. They're produced by insightful local storytellers, including journalists, filmmakers, novelists, podcasters, and tour guides. Ian McKellen has even created a tour. So have the Daily Show and Sir Stephen Fry. Why use VoiceMap? • Explore at your own pace instead of being herded along in a group. Start and stop tours whenever you like, to grab a drink or take in the view, then tap Resume to pick up exactly where you left off. • Focus on your surroundings, not the screen. With automatic GPS playback, you can just tap on Start and let VoiceMap guide you. • Avoid expensive roaming fees or fiddly connection issues. After you download a tour, VoiceMap works offline and includes an offline map. • Enjoy tours as many times as you like, both in your destination and with your feet up, at home. Virtual Playback turns every tour into a podcast or audio book. • Extend your attention span with indoor tours that help you make the most of your time at a growing range of museums and art galleries around the world. • With over 2,100 free and paid tours in 80 countries, VoiceMap offers huge variety. There are over 100 tours in London alone! Press: “High-quality self-guided walking tours...Narrated by local experts, they provide insight into corners of the city sometimes overlooked by regular guided tours.” Lonely Planet “We may be biased, but could there be anything more helpful than having a journalist in your pocket when touring a new city? How about a historian, a novelist or just a really passionate local? VoiceMap culls city-specific stories from them all and fits them neatly into walking tours.” New York Times User Testimonials: "Perfect for solo travelling on your own schedule! Downloaded for a trip to Europe and will be continuing to use it on my next travels." App Store review, Vialetter “My wife and I really enjoyed exploring Bruges at our own pace with this audio tour, and there were some memorable stories that the narrator shared. Also, the app worked great in relation to the location-based services. We easily followed the map and the audio was triggered in the appropriate spots. In comparison to the packs of people wandering the city with tour guides, this was a much better fit for us.” Viator review, Rick A “Great quality information - interesting and entertaining. The time flew by. And no waffle! This is far better than any other guided tour we found - they are much more expensive and far less informative. And you can do this tour any time, any day, at your own pace, and even do it twice!” Tripadvisor review, Carcassonne 's Medieval Walls: A Self-Guided Tour "Thoroughly recommend. Really enjoyed the tour. Very well done. Packed with information and took me round streets I’d never have thought to walk round. An audio and visual treat. Thank you." Janet, NYC “It was enjoyable to be under no time pressure to freely roam the city of Pisa as we so pleased. Wandering from attraction to attraction. The app is clever, concise and easy to use! Would do again - especially with another person or solo traveler.” GetYourGuide review, Grace L “Great value for money, interesting and very clear and easy to follow! I learnt lots about London I didn't already know and I have lived here over 30 years.” London’s Alternative History Tour, Carmella V. ** Just so you know, GPS runs in the background while you're on a tour. This decreases battery life and it's best to start a tour with your device fully charged.
Written user reviews are not shown here. Check current App Store reviews >
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 offline functionality for tours
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in discovering new tours
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Booking process can be cumbersome
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
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.