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.
- Free AI roleplay chat
Free · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Spark Chat: AI Roleplay Freely: 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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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
Assumption to check: Limited filter options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Slow performance when processing large images
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Confusing sharing options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Occasional crashes on older devices
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
- Free AI roleplay chat. Create characters, build stories, stay safe. Talk the way you imagine. Spark Chat is a character-first AI roleplay app where you can freely create companions, set personalities and boundaries, and co-write stories that remember context—safely and in your style. What you can do - Roleplay with depth: Chat with AI companions that adapt to your tone and keep long-context memories for richer stories across fantasy, sci‑fi, romance, adventure, slice‑of‑life, and more. - Create your own characters: Define personality, backstory, goals, relationships, and conversation starters. Save templates for quick reuse. - Build story worlds: Organize characters, locations, timelines, and lore to keep multi-chat narratives consistent. - Style and control: Adjust creativity, tone, and response length. Use presets to stay in-character. - Safe by design: Clear content filters, block/report tools, and privacy options put you in control. - Share and discover: Explore community prompts and character templates, or publish your own. - Multilingual: Roleplay in multiple languages. Why it stands out - Character-first memory for believable roleplay. - Flexible creator tools without complex setup. - Fast, high-quality AI replies tuned for storytelling. How it works 1. Pick or create a character. 2. Start a chat, set the scene and tone. 3. Evolve the story together and manage your world. 4. Save and share characters and templates. Pricing - Free to start. Optional in‑app purchases/subscriptions for extra messages and advanced features. Notes & safety - AI may generate fictional or inaccurate content. Verify facts if needed. - Not for professional advice (medical, legal, financial, etc.). - No explicit sexual content. We enforce safety filters and community guidelines. Support Contact Email: [email protected] Privacy Policy: https://www.caigirl.top/privacy-policy-ios.html User Agreement: https://www.caigirl.top/user-policy-ios.html
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.