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
Violet - Tumblr Client
Violet is a simple Tumblr client app specializing in dashboard browsing and Like and Reblog.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
1 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 included15 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 Violet - Tumblr Client: map the core Social Networking 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
Allow users to customize their profile themes and layouts.
Assumption to check: Limited customization for user profiles
Validate with people who use this workflow before building.
Hypothesis 2
Implement image caching and optimization.
Assumption to check: Slow image loading times
Validate with people who use this workflow before building.
Hypothesis 3
Enhance the search algorithm and introduce personalized recommendations.
Assumption to check: Difficulty discovering new content
Validate with people who use this workflow before building.
Hypothesis 4
Establish a regular update cycle and user feedback system.
Assumption to check: Infrequent updates and bug fixes
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
Violet is a simple Tumblr client app specializing in dashboard browsing and Like and Reblog. # Interface that is easy to operate with one hand - Floating UI that is easy to Like and Reblog - Swipe left or right or tap both ends of the screen to move the dashboard (tap the left and right edges at the bottom of the screen to move to the next post, tap the left and right edges at the top to move to the previous post) - Double-tap or triple-tap on a post to Like or Reblog (can be changed from settings) # Other features - More than 250 dashboards can be loaded - You can choose which blogs to Like and Reblog - Configurable types of posts to be read - Reblogged posts and duplicate posts can be set not to be loaded - The image quality of the image to be read can be changed from low image quality / high image quality - Images can be saved to the device (only when the post type is photo. Even if the image quality to be read is set to low quality, it will be saved in high quality) - UI theme can be changed from 3 types: light / Tumblr / black (You can also switch themes automatically according to your device settings)
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
Supabase
Zustand
React Navigation
Axios
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.
