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
Mobile HitBTC
Mobile HitBTC allow you to be up to date on what happened on HitBTC Exchange without you computer
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.4
10 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Mobile HitBTC: map the core Finance 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
Implement rigorous testing and QA processes before launch.
Assumption to check: Poor user ratings due to bugs and crashes
Validate with people who use this workflow before building.
Hypothesis 2
Include a wider selection of cryptocurrencies and trading pairs.
Assumption to check: Limited cryptocurrency options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 3
Redesign UI for better organization and clarity.
Assumption to check: User interface is cluttered and confusing
Validate with people who use this workflow before building.
Hypothesis 4
Provide in-app tutorials and resources to guide new users.
Assumption to check: Lack of educational resources for beginners
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
Mobile HitBTC allow you to be up to date on what happened on HitBTC Exchange without you computer. It is possible to monitor exchange markets, collect you favourite symbols in one view for quick access, view detailed information on each trading pair. Mobile HitBTC give you access to view your balances, opened orders, trading and transaction history. Mobile HitBTC application does not allow trading of crypto assets, as well as deposit or withdraw. In order to use these services you need to use original HitBTC web site. Mobile HitBTC application allow to view information on exchange and you account status. Main features of Mobile HitBTC application: - View HitBTC Exchange markets real-time state - View details on each trading pair, including 24-hour summary and history chart - Real time updated Order Book and Market history - Accumulate you favourite trading pair to special view for quick access of your watch list Your personal Trading portfolio including: - Balances - Deposit and Withdraw history - Trading history - Opened Orders Feature requests and suggestions are welcome at [email protected] Important note: Mobile HitBTC - NOT an official application provided by HitBTC Exchange team. Mobile HitBTC application developed by individual developer. Application uses official Web API, provided by HitBTC Exchange for access public and private data. HitBTC is registered trademark of HitBTC LTD
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
axios
react-navigation
D3.js
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.
