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.
App Overview
Rollit: Photo Transfer App
The Fun Way to Move Your Photos & Videos to iPhone or iPad
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
114 ratings · Top 30%
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Rollit: Photo Transfer App: map the core Photo & Video workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Implement faster transfer protocols or local network optimizations.
Assumption to check: Limited transfer speed between devices.
Validate with people who use this workflow before building.
Hypothesis 2
Add persistent connections or retries for failed transfers.
Assumption to check: Occasional disconnections during transfer.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance onboarding and tutorials to guide users.
Assumption to check: Confusing user interface for first-time users.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce batch transfers and cloud backup options for improved user experience.
Assumption to check: Lack of advanced features (e.g. batch transfer or cloud backup).
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
The Fun Way to Move Your Photos & Videos to iPhone or iPad Got pictures and videos on your computer? Want them on your iPhone or iPad fast? Rollit makes it super easy! Just plug in a USB cable or use Wi‑Fi, and your media is ready to land in your Photos app. No extra apps, no fuss. Whether you’re on a Mac, PC, or even Linux. Rollit just works. Why You’ll Love Rollit • Transfer photos and videos directly into your Photos app • Works over USB cable or Wi‑Fi your choice • The only app that supports transferring Live Photos into your Photos app • Transfer photos and videos in full resolution, with no quality loss • Keeps all your original photo details like EXIF, location, and capture date • Easily filter by type: selfies, panoramas, screenshots, Live Photos, and more • Save thousands of photos and videos back to your Photos app with no size or count limits • Since your privacy is our top priority, your photos and videos are never uploaded to the internet or stored on any external server • Enjoy the simplicity, just a couple of quick touches are enough to do the job Supported File Types Photos: jpg, jpeg, gif, png, tif, tiff, bmp, bmpf, ico, icns, cur, dng, xbm, heic, psd, webp, heif, hif, tga, exr Videos: mov, mp4, m4v, 3gp Private by Design Rollit doesn’t collect or store any of your data. Your files never leave your device. Rollit makes transferring photos and videos feel like magic. Loving Rollit? Drop us a review—your support means the world!
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Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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BUILD KIT DIFFICULTY
Advanced
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.
