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.
Private Service Mobile
$9.99 · 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 Private Service Mobile: map the core Navigation 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 real-time traffic data
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Offline map capabilities are often unreliable
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Complex UI for new users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchase confusion
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.
Private Service Mobile Private Service is a peer-to-peer caller ID app built for people who want to stay reachable without handing out their real phone number. Instead of a carrier line, every member gets a unique 10‑digit Private Caller ID — a personal, portable identity you share only with the people you choose. Friends, family, clients, dates, contractors, co-parents, anyone. They dial your Private ID, your phone rings, and your real number stays invisible. What it does - True app-to-app calling. Calls travel directly between devices over an encrypted connection — no carrier in the middle, no number to leak. - Native CallKit ringing on iOS. Incoming calls ring on the lock screen with the full system call UI, even when the app is fully closed. It feels like a regular phone call because, to iOS, it is one. - Voice messages and voicemail. If you don't pick up, callers can leave a voice message that lands in your inbox. Tap to listen, reply, or call back. - Contacts you control. Import contacts on your terms, organize who can reach you, and block anyone with a tap. No public directory, no "people you may know," no social graph. - Call quality awareness. A live quality badge tells you when your connection is strong, degraded, or dropping, so you're never guessing why a call sounds off. - Reports and accountability. If someone misuses your line, you can report and block them. Abuse is reviewed; suspended accounts can't simply respawn. Why people use it Your phone number is one of the most over-shared pieces of personal data you own. It's tied to your bank, your email recovery, your two-factor codes, your social accounts, and an endless list of marketing databases. Once it leaks — and it always does — there's no taking it back. Spam calls, SIM-swap attempts, doxxing, stalker-ware, and targeted phishing all start with someone knowing your real number. Private Service flips that. The number you give out is not the number tied to your identity. If a Private ID gets abused, you block, replace, or walk away — your real line is untouched. Carriers never see who you're calling. There's no SIM to swap. There's no number to port. Who it's for - Public-facing professionals — agents, recruiters, freelancers, creators — who need a real callable line without publishing a personal cell. - Anyone dating, selling, renting, or hiring through online platforms where strangers ask for a number. - Co-parents, caregivers, and small teams who want a dedicated line for one part of life without paying for a second phone. - Privacy-minded people who simply don't believe their phone number is anyone's business by default. How it feels The app is intentionally quiet: a black, focused interface, a clean call screen, and almost no noise. No ads. No feed. No "discover." Just your line, your contacts, your messages, and a button that calls the person you actually wanted to talk to. Private Service is built so the most private thing about your phone — who can reach you — finally belongs to you.
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.