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
PhotoTiling
"The well-known InstaTiling app is now PhotoTiling"
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.1
47 ratings · Below Average
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/
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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 PhotoTiling: 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 a wider variety of customizable filters and effects
Assumption to check: Limited filter options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Streamline navigation with a more intuitive layout and clear icons
Assumption to check: Clunky user interface and navigation
Validate with people who use this workflow before building.
Hypothesis 3
Optimize app performance for a wider range of devices
Assumption to check: Frequent crashes on older devices
Validate with people who use this workflow before building.
Hypothesis 4
Implement non-destructive editing to maintain original photo quality
Assumption to check: Inconsistent photo quality after editing
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 well-known InstaTiling app is now PhotoTiling" ** Tile banners and photo grids on your Instagram profile ** New: The app was previously named "InstaTiling". It has been renamed to "PhotoTiling" for meeting Instagram's brand policy. PhotoTiling is an app that enables you to crop your photos into multiple squares (tiles), then arrange them on your Instagram profile page to create Banners and Photo Grids. PhotoTiling not only enables you to easily and quickly make banners, but also provides you the maximum flexibility to tile your photos into any grid pattern you want. Besides uploading to Instagram, you can also save your Banner/PhotoGrid as a single photo. ** Features : 1. Load multiple photos, crop your input photos into multiple squares, then arrange and post them on Instagram as banner or any grid pattern you want. (see Screenshot 1,2,5), 2. Add tags, captions, and comments to the cropped photos within the app, and you can copy the tags to all other cropped photos with just one button tap (see Screenshot 3). 3. The UI is optimized for you to quickly and easily make banners. The "Fit" function can automatically fit your loaded photo into the squares you have selected. 4. Upload the cropped photos to Instagram in the correct order from within the app. The app will track which cropped photos have been uploaded so that you won't forget what should be the next one to upload (see Screenshot 4,5) 5. You can also save the cropped photos to your camera roll, then upload them later in Instagram. 6. You can save the created Banner/PhotoGrid as one single photo to Camera Roll. ** Tips: 1. To make large banners (e.g. 4x3 banner), you can use two-finger tap to quickly select multiple squares. 2. You can use the "Fit" function to quickly fit your loaded photo into the squares that you have selected. 3. Use "Save Grid" function to save the created Banner/PhotoGrid as one single photo to Camera Roll. ** Note: 1. Due to the constraints of Instagram API, currently you can only upload the cropped photos one at a time during "upload". 2. The tags or comments added within the app are only effective when you use the "upload" function. If you use the "save Tiles" function and use Instagram to upload from camera roll, you can only add tags within the Instagram app. ***** Visit @Instatiling on Instagram for featured user profiles (upcoming), update info, and samples etc. Visit #InstaTilingApp to see other users' InstaTilings Visit our website : www.eyetapsoft.com
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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
Starter
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.
