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.
Stop guessing what you made — or what you'll make.
Free · In-app purchases
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.
First kit free with a verified email
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 ServerLife - Tip Tracker: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Stop guessing what you made — or what you'll make. ServerLife is a powerful Tip Tracker and Income Tracker built for tipped and commission-based workers who want to clearly see their real take-home pay — shift by shift. Over 750,000 workers have used ServerLife to log more than 65 million income entries and understand exactly where their money comes from. If your income changes week to week, ServerLife brings clarity. Built for Variable Income Perfect for: • Servers & Bartenders • Gaming Dealers • Uber, Lyft & Delivery Drivers • Shipt & Instacart Shoppers • Stylists, Barbers & Makeup Artists • Fitness & Yoga Instructors • Commission Sales • Freelancers & Independent Contractors • Self-Employed Workers If you earn tips, commissions, or shift-based income — ServerLife helps you track it all. Track Your Shifts in Seconds Log your earnings at the end of your shift and instantly see: • Total earnings • Hourly averages • Weekly & monthly totals • Your best-paying days • Income trends over time No more mental math. No more guessing if it was a "good week." Free Features • Track tips • Track hours • Add notes • Daily, weekly, monthly & yearly totals • Custom pay week start • Entry reminders • Income forecasting — see your projected month-end total based on your own shift history ServerLife makes it simple to stay consistent and build a clear record of your earnings. Know What You'll Make Before the Month Ends ServerLife's Forecasting tab uses your last 90 days of shifts to predict what you're likely to earn for the rest of the month — based entirely on your own patterns, not industry averages. • See how much you've earned so far and what's projected for the rest of the month • Understand your average earnings and how often you work each day of the week • Confidence level shows how reliable your estimate is as your history grows The more you log, the smarter your forecast gets. Upgrade to Premium for Advanced Income Tracking Unlock deeper insight and powerful comparison tools: • Forecast range — see a realistic earnings spread, not just a single number • What-if scenarios — find out what picking up an extra shift would add to your month • Goal check — see how many shifts you'd need to hit your monthly target • Separate Cash & Credit tips • Service charges • Tip Out & Tip In • Hourly wages • Sales totals & Tip % • Covers & sales per cover • Expenses • Work schedule • Multiple jobs & positions • Goals & progress tracking • Mileage & delivery fees • Shift, job & role comparisons • Advanced filtering See which shifts, sections, or roles make you the most money — and plan smarter. Built for Real Workers Cash income is easy to spend and hard to measure. ServerLife gives you a clear, organized view of your earnings so you can make better financial decisions with confidence. Safe & Secure Your data is securely backed up to the cloud automatically. Switch phones? Nothing is lost. Access your income history anytime across devices. ServerLife — The Tip Tracker trusted by over 750,000 workers.
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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: Limited customization for tip categories
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No multi-currency support
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Basic analytics only
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inconsistent data syncing
Validate with people who use this workflow before building.
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.