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
短信电话宝—加密网络电话传话助手
短信电话宝，是一款可以发送加密短信，人工传话以及匿名电话的软件工具，全程加密，实时送达，是情感复合、祝福、道歉的绝佳帮手。
$0.99 · In-app purchases
PRICE
$0.99
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's included15 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 短信电话宝—加密网络电话传话助手: map the core Business 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
Focus on building a secure and reliable user experience with positive feedback.
Assumption to check: Lack of user reviews and ratings indicates potential issues with user trust.
Validate with people who use this workflow before building.
Hypothesis 2
Provide easy-to-understand tutorials and onboarding to simplify usage.
Assumption to check: Encrypted messaging can seem complicated to users.
Validate with people who use this workflow before building.
Hypothesis 3
Add unique features such as group messaging or voice messaging to enhance functionality.
Assumption to check: Limited features compared to other messaging apps.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize data usage and provide options to adjust quality settings.
Assumption to check: Potential for high data usage during calls.
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
短信电话宝，是一款可以发送加密短信，人工传话以及匿名电话的软件工具，全程加密，实时送达，是情感复合、祝福、道歉的绝佳帮手。 加密短信：全程加密发送，企业级平台短号发送，防拉黑，不限制条数和字数； 短信模板：多种短信模板，适用于节日，祝福，免审核发送，实时送达； 人工传话：专员代替您，说出无法说出的话，支持抖音、微信、QQ等十多种主流社交平台，到达率90%以上； 匿名电话：国内随机手机号显示，24小时可用，随用随冲，无需储值； 如您在使用中遇到任何问题，请点击APP—我的—人工客服，在线时间，为您解答问题。
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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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
React Navigation
React Native Gesture Handler
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.
