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.
Schifter is a calculator for sawing angles, it calculates the setting angles for your mitre saw or your sliding compound mitre saw as well as the required alignment of the workpiece
$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 Schifter: map the core Productivity 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 integrations with calendars and task managers.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of customization options for shift entries.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor onboarding experience for new users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited reporting features.
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.
Schifter is a calculator for sawing angles, it calculates the setting angles for your mitre saw or your sliding compound mitre saw as well as the required alignment of the workpiece. (the result field to be used turns green) This calculation is merely based on you entering the beams’ designated inclination of installation (inclination of the hip rafters) and the number of beams coming together (hip rafters). With the help of Schifter, you can quickly construct a symmetric roof or other object, fitting perfectly. Mode of operation: With your input, namely the inclination and the number of the beams, the sawing angles to be chosen (mitre and inclination) for circular saws, mitre saws, sliding compound mitre saws, power saws with 3D cuts etc. are being calculated. Owing to largely unchanged settings oft he saw, Schifter enables you to quickly and easily do jack rafter cuts (double angle cuts or double mitre cuts). Such cuts are mainly being used in roof, wood and metal construction. Saving of time: Thanks to Schifter, you no longer need to painstakingly sketch the sawing angle onto each workpiece. Schifter aims at a quicker completion with a consistently precise sawing result and the workpieces’ better accurancy to fit. Precision: The icosahedron and the tented roof screenshots are meant to demonstrate Schifter’s precision. The required cutting angles were calculated by Schifter and then cut with a commercially available sliding compound mitre saw. The consistently precise angles of the sawn parts are a basic prerequisite for the success of a platonic solid. Among other features, a free update of the Schifter App to be released later will contain instructions on how to build an icosahedron, a dodecahedron, an octahedron, a hexahedron and a tetrahedron.
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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.