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.
I made Leash out of my own necessity: For years, I've not only uninstalled social media apps and email from my mobile, I also had disabled my browser – otherwise, it was too tempting to simply distract myself with new...
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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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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 Leash Browser: map the core Utilities 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 browsing features compared to full browsers.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No customization options for users.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor performance with heavy web pages.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No support for multiple tabs.
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.
I made Leash out of my own necessity: For years, I've not only uninstalled social media apps and email from my mobile, I also had disabled my browser – otherwise, it was too tempting to simply distract myself with news sites or access webmail. Some people may have enough willpower to simply not do that, but I need more friction. Enter disabling the browser! Life without a browser is great, as my phone usage drifted towards more creative things: taking photos, capturing thoughts, catching up and a meticulously curated stream of news, via a RSS reader. But then, life comes along, and asks you to scan a QR code to purchase a ticket. Also, when people sent me a website that I should check out, I had to go a lot of extra miles to do that (i.e. adding it to my todo list and checking it at the laptop). Lastly, some things just don't work without a browser, such as signing in for an app that requires you to do the authentication via their website. Oh, and search! I even installed the Wikipedia app to look up things, but it also has limits. So, I decided to make a 'minimal' browser that will keep the friction where it's needed to withstand the sirens of the internets, but be assistive as a browser should be in living a life in 2026. So here comes Leash! It's built to replace your system browser, and it has two major features: - no address bar - no favorites ... but you can register it as the 'default browser' on your system, and so you'll be able to use it to open links that come 'from the outside world' (= friends, QR codes) and also to open a web search from your phone's search bar. I enjoy it a lot, and I hope, you do, too! (If anything goes wrong, please get in touch – I'm actively developing this, and I'd love to learn about things that aren't working well just yet.)
Written user reviews are not shown here. Check current App Store reviews >
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.