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
HintApp - Cue Cards & Notes
Prepare your speech or presentation in advance!
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.3
6 ratings · Below Average
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 included17 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 HintApp - Cue Cards & Notes: 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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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
Allow users to customize card layouts and styles more extensively.
Assumption to check: Limited customization options for cue cards
Validate with people who use this workflow before building.
Hypothesis 2
Implement a folder or tagging system for better organization.
Assumption to check: Difficulty in organizing notes and cards
Validate with people who use this workflow before building.
Hypothesis 3
Ensure reliable cloud syncing with clear user feedback.
Assumption to check: Inconsistent syncing with cloud services
Validate with people who use this workflow before building.
Hypothesis 4
Add options for sharing cards and notes with others.
Assumption to check: Lack of collaboration 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
Prepare your speech or presentation in advance! Hintapp is an app for creating text cards for your speech. It could be a speech for your friends, presentation at work or at school. Create speech notes on your Mac, iPhone or iPad. You can save your notes in iCloud. Then use your cue cards during the presentation on your iPhone, Apple Watch, iPad or Mac. You can create cards in different colours. Monitor timer during the speech to be on time. Simple and elegant UI will help you focus on the presentation. Check app settings (iOS Settings -> Hintapp) to adjust Hintapp for your needs. Write the whole speech as a set of small cards and use it like a teleprompter. Or write just short hints to help you focus on most important ideas. Hintapp will help you create perfect cue cards: - Apple Watch support - Desktop app for macOS - iCloud storage support - Export/import to/from file - Large contrast font makes it easy to read text from a distance - Edit cards on iPhone, iPad or Mac - Easy gesture control - Minimalistic design - Timer to help you keep track of time - Coloured cards - You can enable web links and text selection in presentation mode (turn it on in the iOS settings for the app) - Dark mode support
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
React Native Reanimated
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.
