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
FreePrints Photobooks
Create photo books quickly, easily and for FREE with the world’s #1 photo book app!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
212,252 ratings · Top 5%
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 included19 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 FreePrints Photobooks: 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
Offer more templates and advanced editing features.
Assumption to check: Limited customization options for photo books
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image loading and caching.
Assumption to check: Potential slow loading times with large photo selections
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the payment and order confirmation steps.
Assumption to check: Complicated checkout process
Validate with people who use this workflow before building.
Hypothesis 4
Introduce more free features or a freemium model.
Assumption to check: Subscription model may deter casual users
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
Create photo books quickly, easily and for FREE with the world’s #1 photo book app! Everyone loves photo books, but making them has always been cumbersome, time-consuming and costly. The FreePrints Photobooks® app changes all that with the fastest, easiest way to create beautiful photo books—right on your iPhone or iPad. And best of all, you get one 20-page standard softcover photo book every month for FREE! You pay only a small delivery charge. There are no catches—no subscriptions or commitments™. Just free photo books. Here’s how it works. • Get one free 5x7 or 6x6 standard softcover cover photo book every month. • Optional premium hardcovers in 6x8, 8x8, 8.5x11.5, and 12x12 are also available. • Start out with 20 pages. Or add more pages for a small additional charge. • Pay only a small shipping charge of $7.99. Our shipping charge never changes, no matter how many books you order. • There are no subscriptions or commitments. Create a photo book whenever you like. • We guarantee 100% satisfaction or your money back! It’s beyond easy. • Add photos from just about anywhere—your device or sources like Facebook, Dropbox, and previous FreePrints orders. • Photo books arrive on your doorstep in just days. • You’ll find yourself coming back month after month. Now that photo books are free, there’s no reason to wait for a special occasion! All FreePrints Photobooks® feature premium papers, vivid color and long-lasting laminate covers. Interior pages are printed on acid-free, archival paper with a satin finish that makes photos sharp and vibrant. They’re printed and bound in the U.S. using the highest quality standards. ABOUT FREEPRINTS®: FreePrints Photobooks® is a member of the growing FreePrints™ family of mobile apps, each dedicated to designing personalized products quickly, easily and affordably. The popular original FreePrints® app lets you order 1,000 free 4x6 photo prints each year, paying only a small shipping charge. We’re glad you’re here – and we believe you’ll find our apps, products and services to be the very best in the business. We hope you enjoy using FreePrints Photobooks®!
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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.
