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.
TALLINN & ESTONIA’S BEST is the ideal travel guide to this historic and starkly beautiful country
$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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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 Tallinn & Estonia’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: Lack of user engagement features like in-app messaging or community reviews
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited offline access to guides and map data
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No personalized recommendations based on user preferences
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: High cost for users upfront without a trial
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.
TALLINN & ESTONIA’S BEST is the ideal travel guide to this historic and starkly beautiful country. Written by a travel writer it explores key DESTINATIONS; suggests ITINERARIES; and details dozens of SIGHTS and ACTIVITIES. All content (150+ points-of-interest/195+ pics) is original and independent; no recommendations are ads! —— *** This app is ad-free and subscription-free: the single-one-off purchase also includes free updates in the future. Published by TouchScreenTravels.com: Travel guides for the digital age. Our Touch, Your Travels. *** —— TALLINN & ESTONIA’S BEST starts with essential TRIP-PLANNING information and an overview of key REGIONS and DESTINATIONS to provide perfect orientation. A hand-crafted ITINERARIES section then suggest how you might make the most of 10 DAYS IN ESTONIA and provides a single-day itineraries that introduces TALLINN IN-A-DAY. The app’s next section, INTERESTS & ACTIVITIES, gives you the heads-up on various topics, so if you’re keen to plan some HIKING & BOG WALKING; are looking for attractions for KIDS & FAMILIES; or want a good grounder in HISTORY and related sights, then you might just dive straight into the app here. Other categories include ART; CANOEING; SAUNAS; and WILDLIFE & BIRDWATCHING. Finally, the app provides useful general advice on FOOD & DRINK, with many RESTAURANT, BAR and CAFE tips at key locations; and finally a SHOPPING section to make sure you find that perfect souvenir. —— APP FEATURE: TRIP PLANNING Key before-you-go information, including: • Accommodation • Costs • Info, Media & Language • Seasons, Festivals & Events • Transport APP FEATURE: REGIONS The lowdown on all key parts of the country: • Northeastern Estonia (inc. Lahemaa National Park; Narva) • Southeastern Estonia (inc. Tartu; Võru) • Tallinn (Central Districts; Old Town; Suburban Tallinn; Toompea) • Western Estonia (inc. [Haapsalu; Hiiumaa; Pärnu; Saaremaa) APP FEATURE: ITINERARIES & TOURS Plan your time: • Estonia In-10-Days • Tallinn In-A-Day APP FEATURE: INTERESTS & ACTIVITIES Backgrounders, highlights & tips: • Art • Canoeing • Hiking & Bog-Walking • History • Kids & Families • Saunas • Wildlife & Birdwatching APP FEATURE: EAT, DRINK, SHOP Listings and insider tips: • Cafes • Pubs, Bars & Drinking • Restaurants & Food • Shops & Shopping —— 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: Jonathan Bousfield is the author of Rough Guides to the Baltic States, Croatia, Austria, Bulgaria and Poland; and has also written DK Eyewitness guides to Bulgaria, Slovenia, Poland, Kraków and Tallinn. He has written about travel, culture and history in Central & Eastern Europe for The Calvert Journal, Stray Satellite, Time Out, Jutarnji List, the Guardian, the Independent and others. • ICON: Andrey Korchagin@flickr —— 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.