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.
App Overview
Local News & Weather: Haystack
Stream 400+ News Channels
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
20,369 ratings · Top 15%
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Local News & Weather: Haystack: map the core News workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Provide personalized news based on user preferences and interests.
Assumption to check: Limited article variety in localized news
Validate with people who use this workflow before building.
Hypothesis 2
Integrate reliable weather APIs for accurate local forecasts.
Assumption to check: Weather updates can be inaccurate
Validate with people who use this workflow before building.
Hypothesis 3
Implement offline reading capabilities for saved articles.
Assumption to check: Lack of offline reading mode
Validate with people who use this workflow before building.
Hypothesis 4
Add a text-to-speech feature for accessibility.
Assumption to check: No text-to-speech feature for articles
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Stream 400+ News Channels. Get Local News, Live News & World Coverage. Watch All the News in Just One Click. Trusted by more than 24 million news viewers! Your go-to, from local news to world events. It’s the best way to watch a variety of coverage, all in one place, and absolutely free. The most local news available to stream anywhere! Choose the categories, sources and topics to create a news channel built just for you. Get the latest local weather for your neighborhood. Explore on demand channels like International News and Entertainment News with stories from only the most trusted news channels. Get all of your local news stations together so you never miss what's happening in your community. Watch live news channels and get breaking local news alerts on your phone, so you always have access to the news that matters to you. Take a deep dive into important topics and trends with dedicated channels that bring coverage from all over the world together in one convenient spot. Connect to the world around you with Haystack News. What the world is saying about Haystack News “The best free streaming news app.” – Techhive “Offers a variety of content — including both on-demand and live-streaming news, and both national and local news coverage.” – Techcrunch “Customized preferences allow Haystack users to follow celebrities, companies, local news, weather and other things they care about.” – The Hollywood Reporter Featured National and World News Partners ABC News Live, Bloomberg, CBS News, CNN, Reuters, CBC, Cheddar, CNET, EuroNews, AfricaNews, GameSpot, NewsNation, Newsy, i24 News, Al Jazeera, Yahoo! Finance, Newsmax, The Hill and more. The Most Local News! Stream Local News for Every State. Local news include: CBS New York, News12, WCBS, KCBS, CBS Chicago WBBM, KYW, KTVT, CBS San Francisco KPIX, KTRK, WCVB, WGCL, WMOR, KPHO, WXYZ, KIRO, WCCO, WFOR, KMGH, WESH, WEWS, KCRA, KMOV, WTAE, WTVD, KPTV, WBAL, WRTV, KGTV, WSMV, WFSB, KCWE, WISN, WLWT, WYFF, WPBF, KVVU, KOCO, WGAL, WVTM, WXII, WFOX, KOAT, WLKY, WDSU, WMCTV, WKBW, KFSN, KJRH, Fox10tv, WFTX, WHIO, KCCI, KGUN, WNEM, KETV, KSPR, WTVG, WMTV, WMTW, WJCL, WAPT, WPTZ, KHBS, KIVI, WGGB, KVLY, KATC, KSBY, KSBW, KERO, KRIS, KOSA, WBOC, KPAX, KTVQ, WCAV, KBZK, KRTV, WTAP, KCWY, KXLH, WLNY, CBS Los Angeles KCAL, WLS, WPVI, KABC, KGO, KY3, CBS Boston WBZ, WMUR, WFTS, KNXV, WMYD, WFXT, WWJ-TV, KCNC, WKCF, KOVR, WFTV, WSOC, CBS Pittsburgh KDKA, KTVU, WRDQ, WPXI, WMAR, WJZ-TV, KCTV, WTVF, KMCI, KMBC, TMJ4, WCPO, FoxCarolina, WPTV, KTNV, KSHB, WFLX, WJAX, WLEX, WHBQ, WACY, KOKI, KMTV, WGBA, KWBA, WJRT, KOAA, KXXV, WNNE, KHOG, NBC Nebraska KNIN, KSAW, WTXL, KTRE, KZTV, WSYM, WSHM, NEWSPLEX, KXLF, KTVH, WHEC, WDIO, KOB, KSTP, KSTC, KAAL, WNYT, WNYW. Please let us know how we can improve by tapping the feedback button on the main screen of the app. Or email us [email protected] Learn more about Haystack News at http://www.haystack.tv Haystack News is a free and advertiser-supported way to watch local news and world news. Haystack News Premium is an optional subscription that removes any ads controlled by us. If you choose to purchase Haystack News Premium your payment will be charged to your iTunes Account after any promotional period. Your subscription will auto-renew every month until you cancel. You may manage your subscription, including cancellation by going to your Haystack settings or the Subscription section of your iOS Settings. By using Haystack you agree to the below "Terms of Use" and "Privacy Policy": Haystack News Terms of Use: https://www.haystack.tv/tos.html Haystack News Privacy Policy: https://www.haystack.tv/tos.html#privacy
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
React Navigation
Axios
BUILD KIT DIFFICULTY
Expert
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.
