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
Dot Sign: LED Sign Maker
Dot Sign is the fast way to turn short messages into crisp LED-style signs for display and sharing.
$1.99 · In-app purchases
PRICE
$1.99
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Dot Sign: LED Sign Maker: map the core Graphics & Design 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
Enhance customization options with more templates and design elements.
Assumption to check: Limited design capabilities compared to full graphic design apps.
Validate with people who use this workflow before building.
Hypothesis 2
Integrate easy sharing options to popular platforms.
Assumption to check: Lack of sharing features for social media.
Validate with people who use this workflow before building.
Hypothesis 3
Allow multiple users to work on the same sign in real-time.
Assumption to check: No collaborative features for teams.
Validate with people who use this workflow before building.
Hypothesis 4
Offer more flexible pricing options or a freemium model.
Assumption to check: Potentially high subscription cost for premium features.
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
Dot Sign is the fast way to turn short messages into crisp LED-style signs for display and sharing. Write your message, choose the look, add motion, and put it on screen. Dot Sign is built for practical sign-making - storefront windows, pickup boards, event notices, studio signs, and simple promo displays. CREATE SIGNS FAST Start with a simple text-first studio. Type your message, preview it instantly, and save multiple signs to your library. CUSTOMIZE THE LOOK Tune your sign with: - Multiple font faces - Color palettes and backgrounds - Dot shapes - Glow intensity - Density presets - Alignment and letter spacing - Inverse dots for board-style depth ADD MOTION Choose the animation style that fits the message: - Scroll left or right - Bounce - Blink - Pulse - Wipe You can also adjust animation speed for subtle movement or attention-grabbing motion. DISPLAY FULL SCREEN Open any sign in a dedicated display mode designed for clear, readable presentation at a distance. EXPORT AND SHARE Export your sign as a still image or animated media and send it through the standard share sheet for review, social posting, or promotion. NO ACCOUNT REQUIRED Dot Sign does not require sign-up. Your saved signs are stored locally on your device so you can create, edit, and display them quickly. GREAT FOR - Storefront messages - Pickup and rideshare boards - Event wayfinding - Studio and production signs - Short promo loops - Everyday display text PRIVACY Dot Sign stores sign data locally on your device. The app uses analytics to understand product usage and improve the experience. See the privacy policy for details: https://dotsign.storepage.app/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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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.
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React Native
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BUILD KIT DIFFICULTY
Intermediate
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.
