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.
JarLogic is a simple, private way to keep track of your money — built for anyone who wants a clear picture of their spending without learning a complicated app.
$4.99
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.
Your first Build Kit is free with a verified email.
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 JarLogic: 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.
JarLogic is a simple, private way to keep track of your money — built for anyone who wants a clear picture of their spending without learning a complicated app. HOW IT WORKS Set your starting balance, then log money as it comes in and goes out. Every expense gets sorted into a "jar" — Housing, Food, Transport, Fun, Savings, or categories you name yourself — each with its own monthly limit. Watch each jar fill up as you spend, so you always know where you stand before you're over budget, not after. WHAT YOU GET A running balance that updates with every entry Spending jars with visual limits for each category A full month-by-month history you can look back through anytime One-tap CSV export if you want your numbers in a spreadsheet Everything synced privately across your iPhone and iPad via iCloud YOUR DATA, YOUR ACCOUNT JarLogic doesn't ask you to create an account, doesn't show ads, and doesn't sell or share your information. Your budget is stored in your own private iCloud account — Geekos Solutions never sees it. JarLogic by Geekos Solutions.
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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: Complex, confusing interface
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Slow bank connections
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Security concerns
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.
Not assessed in a Build Kit yet.
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.