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.
Runlow shows how much of your AI usage you have left — on your Lock Screen, in the Dynamic Island, in widgets, on your watch and in your Mac's menu bar — before you run out.
$1.99 · 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.
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 Runlow: AI Usage Meter: map the core Developer Tools 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 analytics features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Poor user interface design
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of customization options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited support for multiple AI tools
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.
Runlow shows how much of your AI usage you have left — on your Lock Screen, in the Dynamic Island, in widgets, on your watch and in your Mac's menu bar — before you run out. Connect the services you pay for and every limit becomes a colour-coded meter that fills from green to red as you use it, with the time until it resets beside it. WHAT IT TRACKS • Claude — your 5-hour session, weekly caps and per-model lanes, across as many accounts as you have, plus extra-usage credits • Codex (ChatGPT) — your plan's limits • Gemini CLI — your quota • Cursor — plan usage • GitHub Copilot — premium requests • OpenRouter — credit balance, key spend, and what you spent today, this week and this month THE LOCK SCREEN CARD Pin up to eight meters to your Lock Screen as a Live Activity. Choose the headline meter, how big the top row is, how many meters fit, whether every meter gets a bar, and where the refresh button and the "updated" stamp sit. Reset times can count down live. The Dynamic Island shows the number you pick on each side, and expands to as many as six meters. A SETUP WIZARD One question at a time, with your own card in front of you the whole way: which meters, how big, the bars, the typeface, the background, how the numbers read. It takes about a minute, and Cancel puts everything back. WIDGETS Small, medium and large Home Screen widgets — the large one holds up to twelve meters, each with its bar — and rectangular, circular and inline Lock Screen widgets. Long-press a widget to choose which meters it shows, and tap its refresh button for fresh numbers. MAKE IT YOURS Seven themes, one tap each, that follow light and dark on their own. Nine typefaces. Bars in one piece or in blocks like a fuel gauge. Colour bars by the theme, by usage, by usage as a gradient along the bar, or give any meter its own colour and gradient. A glass, black, light or custom-coloured background. Name any meter, hide the ones you do not need, and put the rest in your order. Numbers as used or as what is left. ON YOUR MAC Runlow lives in the menu bar: the number sits next to the clock, and a click drops down every limit. Put as many meters in the menu bar as you like, side by side or stacked, and right-click any meter to add it or take it out. The Mac has the same themes, bars and setup wizard. ON YOUR WRIST Your focus meter on Apple Watch, in your theme, with its own settings page and a live preview. THE DASHBOARD Full-screen mode turns an iPad or iPhone into a wall of live meters for the desk. Landscape lays every limit out as tiles. History charts every meter over time, with an optional forecast — "at this pace, tomorrow around 11:14" — worked out from your own readings. A payments log tracks what you pay each service, with CSV export. A credit calculator does the sum after a top-up. Notifications warn you before you hit a wall and tell you the moment a limit resets, and service status flags when a provider is having an outage. ACROSS YOUR DEVICES Your settings can follow you to your other devices through your own iCloud — colours, themes, meter names and order, the Lock Screen layout — and you choose what travels. Off unless you turn it on. PRIVATE BY DESIGN Runlow has no account and no server. You connect your own provider accounts, and everything — your keys and your usage — stays on your device and goes only to the provider's own servers. Nothing is sent to us. Want a look first? Turn on Demo Mode to explore with sample data. One purchase covers your iPhone, iPad, Mac, Apple Watch and Apple Vision Pro. Runlow is an independent app and is not affiliated with, endorsed by, or sponsored by Anthropic, OpenAI, Google, Cursor, GitHub or OpenRouter.
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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.