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.
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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.
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Appster - Developer's Diary: map the core Developer Tools workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Lack of user engagement features like reminders or analytics.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited customization options for entries.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No collaboration features for teams.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Absence of offline capabilities.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Appster helps you plan, build, and ship apps with confidence. Organize your projects, track budgets and spending, manage tasks and bugs, capture notes, and stay on top of everything with smart notifications—all in a fast, delightful interface.Whether you're an indie developer, a student, or a small team, Appster keeps everything clear and actionable so you can focus on shipping.Highlights Projects at a glance: See your apps by stage: Idea, Design, Building, Testing, Live. Budget made simple: Set total or periodic budgets (daily, weekly, monthly, or total project), track spending with detailed history, and see what's left with a modern circular progress view. Categories for clarity: Create colored categories (like Development, Marketing, Design) and assign spending for better insights and organized tracking. Quick actions: Add spend or increase budget with one tap, select categories on the fly, perfect for on-the-go updates. Tasks & bugs: Check off tasks, track bug severity (Low to Critical), and stay on top of what matters most. Smart notifications: Get notified when bugs are reported or tasks completed. Set up daily digests at your preferred time. Configure reminders for stale bugs and tasks—fully customizable to match your workflow. Notes you'll actually use: Capture ideas, meeting notes, or release plans, and edit anytime. Smart onboarding: Helpful tips appear only when you need them, guiding you through key features. Haptic feedback: Feel your progress with subtle taps for key actions and interactions. Spotlight search: Instantly find your apps from the system search, integrated seamlessly. Archive & organize: Archive completed projects to keep your active list focused, while preserving all project data. Designed for real workflows Multiple platforms per app: iOS, "other phone platforms", Web, macOS—track them all in one place. Fast editing: One-tap updates for stage, budget, tasks, bugs, and notes. No complicated workflows. Spending history: Track every expense with dates, categories, and notes. See exactly where your budget goes. Beautiful UI: Clean cards, gradients, and materials that feel right at home on iOS, with attention to every detail. Why developers love Appster Keeps projects organized and budgets under control Reduces context-switching with everything in one place Helps you ship faster with clarity and focus Never miss important updates with smart notifications Perfect for solo developers and small teams Start your first project today, and ship with confidence.EULA: https://bigtechdesign.cc/appster-terms-of-service Privacy Policy: https://bigtechdesign.cc/appster-privacy-policy
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.