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
PicCollage EDU Collage Maker
From the creators of PicCollage, the hugely popular photo app with over 200 million downloads, PicCollage EDU is the SAFEST and most user-friendly collage app available
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
155 ratings · Top 15%
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 included17 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 PicCollage EDU Collage Maker: map the core Education 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
Provide more templates and design elements.
Assumption to check: Limited customization options for collages
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image handling and processing.
Assumption to check: Performance issues with large images
Validate with people who use this workflow before building.
Hypothesis 3
Integrate sharing options for social media.
Assumption to check: Lack of social features for sharing collages
Validate with people who use this workflow before building.
Hypothesis 4
Implement more user-friendly monetization strategies.
Assumption to check: In-app purchase prompts can be intrusive
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
From the creators of PicCollage, the hugely popular photo app with over 200 million downloads, PicCollage EDU is the SAFEST and most user-friendly collage app available. With no account required to use the app and no social sharing features, it's perfect for young children and for classroom use. PicCollage EDU also offers hundreds of free backgrounds, fun stickers, and fonts. Easily create amazing collages with PicCollage EDU and save them to your device or print them out! "PicCollage EDU is by far one of the easiest and safest apps I have run across for elementary learners. I love the option to turn off the image search in the settings and how social media sharing is not allowed. Everything is safe and secure!" Julie S., Elementary Instructional Technology Consultant Highlighted features: * Safe and fun for all ages and perfect for classrooms. * Import photos from your photo library. * Rotate, resize, and delete scraps with simple touch gestures. * Easily "clip" photos by outlining the area you want with your finger. * Doodle drawings on your collage with our new "Doodle" tool. * Access hundreds of stickers and backgrounds for FREE. * Choose from a variety of fun frames to create an instant collage. * Over 100 colorful backgrounds and fun stickers. * Square and portrait layouts. Privacy Policy: https://cardinalblue.com/privacy/piccollageedu Terms of Service: https://picc.co/tos/piccollageedu/
Written user reviews are not shown here. Check current App Store reviews >
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.
SUGGESTED BUILD STACK
React Native
Expo
Zustand
react-navigation
expo-image-picker
expo-file-system
BUILD KIT DIFFICULTY
Intermediate
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.
