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.
DEVON & CORNWALL’S BEST is an ideal travel guide to Britain’s beautiful south west
$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 Devon & Cornwall’s Best: 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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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: Hidden fees revealed at checkout
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Poor customer support
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Complicated booking process
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.
DEVON & CORNWALL’S BEST is an ideal travel guide to Britain’s beautiful south west. Illustrated using 430 pics and written by a pro-author it explores key DESTINATIONS; suggests ITINERARIES; details 230 SIGHTS and ACTIVITIES; and suggests great spots to EAT & DRINK. All text is independent. ––– *** This app is ad- and subscription-free and all content works OFFLINE. The single, one-off purchase also includes free updates in the future. Published by TouchScreenTravels.com: independent digital travel guides. Our touch, your travels. *** ––– DEVON & CORNWALL’S BEST starts with essential TRIP-PLANNING information and an overview of key DESTINATIONS to provide perfect orientation. A hand-crafted ITINERARIES section then offers first-timers three different, easy-to-follow routes to explore the region. Do one or two of them, or link them all up for a brilliant two-week trip. Or, if you have particular INTERESTS or ACTIVITIES in mind, then you might just dive straight in to the this section of the app. It’s designed to give you the low-down on various themes, so if you’re travelling with KIDS; want an overview of WATER SPORTS; or want to tour landscaped GARDENS or HISTORIC HOMES – you'll find dedicated sections point you in the right direction. Other categories include BEACHES, CYCLING, HISTORY and WALKING. Finally the app details many good RESTAURANTS, CAFES & PUBS near many key sights as well as a few places that are attractions in themselves. There’s also a little on SHOPS & SHOPPING to help hunt souvenirs and round off that perfect trip. —— APP FEATURE: TRIP ESSENTIALS Key before-you-go information, including: • Accommodation • Costs & Tipping • Local Info & Visitor Centres • Seasons, Festivals & Events • Transport APP FEATURE: DESTINATIONS Meet the key regions: • Cornwall:– Bodmin Moor & Around;East Cornwall; Isles of Scilly; North Cornwall; South Cornwall; West Cornwall • Devon:– Dartmoor National Park; Exeter & East Devon; North Devon & Exmoor; Plymouth; Torbay; South Devon APP FEATURE: ITINERARIES & TOURS Easy-to-follow tours: • The Cream of Cornwall (7 Days) • Dartmoor, North & East Devon (3 Days) • South Devon, Plymouth & Torbay (3 days) • Cornwall Tour Companies • Devon Tour Companies APP FEATURE: INTERESTS & ACTIVITIES Backgrounders and practical advice on: • Arts • Beaches • Cycling • Gardens • Historic Homes • History • Kids & Families • Walking • Water Sports APP FEATURE: LISTINGS Where best to eat, drink, shop and more: • Cafes • Pubs & Bars • Restaurants • Shops & Shopping • Theatres & Cinemas —— APP FEATURES: TECHNICAL • NAVIGATE quickly using the app's many image buttons; a global search; and internal hyperlinks. • LOCATION info (using your device's GPS). • Detailed OFFLINE MAPS and the ability to ADD YOUR OWN markers. • Save and share FAVOURITES. • One-click website LINKS. • One-click PHONE CALLS (on phones). • Easily CONTACT the author. —— CREDITS • AUTHOR: Belinda Dixon has loved living in the south west since she moved to Falmouth to study and found palm trees on campus. A travel writer since 1997, she’s co-written dozens of guidebooks, as well as walking guides, web articles and apps. • ICON: Dr Bob Hall @fickr —— REVIEWS AND RATINGS Reviews and ratings are like gold dust to small developers like us, if you like the app please go back into the app store, find it and leave a review or just a rating. It really helps us. Thanks.
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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.