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
To Do Receipt: Simple List
The minimalist to-do list that feels like paper.
$3.99 · In-app purchases
PRICE
$3.99
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.
First kit free with a verified email
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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.
What's included
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 To Do Receipt: Simple List: 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
The minimalist to-do list that feels like paper. Tap to check. Swipe to scratch. Pinch to tear off when you're done. No account, no cloud, no AI — just you and your backlog, crumpled up at the end of each day. HOW IT WORKS - Write your tasks on the receipt - Tap the checkbox to check items off - Tap the text to scratch items out - Pinch to tear off the receipt and start fresh - Your old lists crumple into paper balls you can revisit anytime DESIGNED TO FEEL REAL Realistic paper textures, torn edges, and thermal print fonts make every list feel like a real receipt. Five unique store themes give each receipt its own personality — from QUICK MART to CORNER STORE to THE PAPER CO. SIMPLE BY DESIGN No account. No cloud. No sync. No ads. No AI. No notifications. Everything stays on your device, private and offline. A quiet, paperless to-do list for people who are tired of notification-driven productivity apps. FEATURES - Check & scratch — two satisfying ways to mark tasks done - Tear gesture — pinch to archive and start a new receipt - Paper ball archive — tap to revisit, long-press to delete - 5 receipt themes with randomized headers - 40+ decorative stickers and 12 torn edge variants - Haptic feedback on every interaction - 6 customizable app icons - Home Screen widget (coming soon) - Pay once. Yours forever. No ads, no subscriptions, no in-app purchases - Works 100% offline
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
Add advanced features like recurring tasks and reminders.
Assumption to check: Limited features compared to other task management apps.
Validate with people who use this workflow before building.
Hypothesis 2
Implement cloud sync for cross-device use.
Assumption to check: No cloud sync options.
Validate with people who use this workflow before building.
Hypothesis 3
Add user ratings and reviews for tasks.
Assumption to check: Lack of user feedback mechanisms.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce task sharing or team features for better collaboration.
Assumption to check: No collaboration features.
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
React Navigation
Axios
React Native Paper
@react-native-community/picker
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
