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
Kiwibit
At Kiwibit, we believe technology should keep life simple—and make it better
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
2,065 ratings · Top 5%
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 included18 files
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 Kiwibit: map the core Utilities 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 unique task tracking methods or integrations.
Assumption to check: Limited features compared to more robust task managers
Validate with people who use this workflow before building.
Hypothesis 2
Implement reliable iCloud sync with clear user feedback.
Assumption to check: Difficulties with syncing across devices
Validate with people who use this workflow before building.
Hypothesis 3
Adopt a minimalist design approach for better usability.
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to set priorities and reminders for tasks.
Assumption to check: Limited customization options for tasks
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
At Kiwibit, we believe technology should keep life simple—and make it better. Whether you’re at home or away, our smart devices and intuitive app help you effortlessly stay connected to the moments that truly matter. With clear design, thoughtful features, and seamless integration, Kiwibit makes smart living feel natural and reliable. We simplify the details, so you can enjoy more of what you love. Keep it Simple. Make it Better. 【Kiwibit Plus Service】 Elevate your security with the Kiwibit Plus Subscription to unlock next-level features: 1. Extended Cloud Storage: Gain access to up to 60 days of recording history, ensuring you never miss a moment. 2. Intelligent Push 1. Security Cameras: Get real-time notifications about people, vehicles, packages, and pets, so you're always aware of what's happening. 2. Bird Feeder: Receive smart notifications about bird activities and detect nuisance animals, to keep your bird feeder enjoyable. 3. Custom Alert Zones: Customize and filter alerts by setting up specific activity zones, reducing unnecessary notifications and enhancing your focus on key areas. 4. Birds Tab (Bird Feeder Only) Check out the special "Birds Tab" in the app to see all identified bird species and enjoy exciting moments captured by your bird feeder. With recognition for over 10,000 bird species, explore nature like never before. 【Details of the Plus Service】 Single Plan ( Subscribe monthly) Single Plan ( Subscribe annually) Unlimited Plan (Subscribe monthly) Unlimited Plan (Subscribe annually) 【Subscription Guidelines】 Cancel auto renewal: Please manually turn off the automatic renewal function in iTunes/Apple ID settings at least 24 hours prior to the expiration time of your subscription. Renewal: iTunes account will be charged automatically within 24 hours prior to the expiration time of your subscription. If the renewal is successful, the subscription will be extended by one subscription period. Privacy Policy： https://api-us.kiwibit.com/management/app-files/kiwibit/privacy/en/index.html Plus Service Agreement： https://api-us.kiwibit.com/management/app-files/kiwibit/awareness-service-agreement/en/index.html Continuous Subscription Service Agreement： https://api-us.kiwibit.com/management/app-files/kiwibit/continuous-subscription-service-agreement/en/index.html
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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
TypeScript
SQLite
AsyncStorage
react-navigation
BUILD KIT DIFFICULTY
Advanced
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.
