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.
Pile Driving Log is a field logging app built for inspectors, engineers, and contractors who need fast, organized pile driving records on the job site with nothing but your phone!
$4.99 · 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.
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Combine features and design from your favorite apps.
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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 Pile Driving Log: 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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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 logging options for complex projects.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in filtering logs by multiple criteria.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited export functionality for reports.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No collaboration features for teams.
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.
Pile Driving Log is a field logging app built for inspectors, engineers, and contractors who need fast, organized pile driving records on the job site with nothing but your phone! Record blow counts as the pile is driven, track depth by foot or smaller increments, and see live driving data such as blow count, stroke estimate, blow rate, tip elevation, driving sessions, and practical refusal alerts. The app keeps each pile record organized by structure, bent, pile number, location, hammer, pile type, driving criteria, and DOT form details. Pile Driving supports state-specific pile documentation workflows for SCDOT, FDOT, GDOT, TDOT, NCDOT, and VDOT. Enter project and inspection details once, then generate shareable exports including CSV, PDF forms, and supported Excel form outputs. Key features: • Tap-to-record blow counts in the field • Live stroke, BPM, depth, and tip-elevation readouts • Driving criteria and practical refusal alerts • Start/stop driving session tracking • Adjustable depth increments: 1 ft, 6 in, and 2 in • Hammer setup with preset and custom stroke options • Soil notes by depth • State DOT form details for SCDOT, FDOT, GDOT, TDOT, NCDOT, and VDOT • Export pile records to CSV, PDF, and supported Excel formats • Local on-device storage for pile records • Built-in reference notes for DOT criteria and tolerances Pile Driving helps turn field observations into clean, consistent pile records without waiting until you are back at the office. Always verify final documentation requirements, driving criteria, tolerances, and form acceptance with the current DOT specifications, project plans, and project engineer.
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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.