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
Factastic – Daily Facts
Factastic – Daily Facts
$2.99
PRICE
$2.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Factastic – Daily Facts: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Factastic – Daily Facts A little curiosity, whenever you need it. One surprising fact at a time, in an elegant serif on rich gradients – swipe for another, copy or share the ones you love. _____ • Over 2,400 facts across 13 topics, from Space, Animals & Nature and the Human Body to History, Science, Technology, Arts, Literature, Music, Sports, Politics, Geography and Food. • A daily fact at the time you choose, with a soft ding – or silently. • Home Screen widgets in four sizes (extra large on iPad) and a Lock Screen widget, with a new fact every 10 minutes. • Pick the topics you like, or none for everything. • Every fact comes up once before any repeats. • A short setup on first launch. Change anything later in Settings. • Made for iPhone and iPad, in portrait and landscape. • Also on the Mac, as a menu bar app with fact cards. Private by design: no accounts, no tracking, no data collection. _____ Questions, feedback or a fact we're missing? Send us a message at factastic.roniger.co.il/contact (or from Settings › Contact Support).
Written user reviews are not shown here. Check current App Store reviews >
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
Incorporate user-generated facts or a wider variety of topics to keep content fresh.
Assumption to check: Users may find the content repetitive and lose interest quickly.
Validate with people who use this workflow before building.
Hypothesis 2
Add quizzes or trivia games related to the daily facts for engagement.
Assumption to check: Limited interactivity can make the app feel static.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to select categories of facts they want to receive.
Assumption to check: Lack of customization options for users.
Validate with people who use this workflow before building.
Hypothesis 4
Implement social sharing options to encourage users to share facts on social media.
Assumption to check: No social sharing features can limit the app's reach.
Validate with people who use this workflow before building.
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
axios
zustand
react-navigation
expo-sharing
BUILD KIT DIFFICULTY
Starter
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.
