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.
SPLIX: BRUTAL BILL SPLITTING.
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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.
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 Splix App: 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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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: Users often find finance apps overwhelming due to too much data.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Manual transaction entry can be tedious.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of budget tracking features.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchases can be confusing.
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.
SPLIX: BRUTAL BILL SPLITTING. Look, splitting bills with your friends is a special kind of hell. Most apps try to hide that pain under rounded corners, "playful" pastel gradients, and enough animations to make you dizzy. I didn’t do that. I built an app that looks like a concrete wall because that’s how solid your finances should be. It’s called Brutalism. It’s high-contrast, it’s fast, and it doesn't care about your feelings—just your data. THE STARK REALITY: RADICAL CLARITY (DASHBOARD): A massive header that tells you exactly how much you’re up or down. No digging through menus. If you owe Brian $250 for that "weekend getaway" you didn't even want to go on, you'll see it immediately. ZERO-FRICTION SPLITTING: Add an expense before the waiter even brings the check. My buttons don't have shadows; they have "press-in" effects that actually feel like you’re doing work. UNLIMITED EVERYTHING: Unlike those other apps that want a monthly subscription just so you can track more than five coffees, I let you log 10 or 10,000 expenses. No caps. No paywalls. Just pure utility. GLOBAL DOMINATION (MULTI-CURRENCY): For the friend who went to Europe once and won't stop talking about "The Continent." Track expenses in USD, EUR, INR, or JPY side-by-side. The horizontal carousel handles the math so you don't have to. WHY SPLIX? Because your friendship shouldn't end over a $12 Chipotle bowl, and your phone shouldn't look like a box of crayons just because you're trying to track a dinner. POP THEME. PURE BLACK. PURE WHITE. ZERO NONSENSE. STAY BRUTAL. DEV NOTE: I’m just an indie dev who got tired of slow, bloated apps. If you like it, cool. If you don't, it’s probably because you like drop shadows and rounded corners. I can’t help you with that. Download Splix. Settle up. Move on.
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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.