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
Stim: ADHD Sensory Calm
Stim turns your screen into a sensory experience
$0.99
PRICE
$0.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
4 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
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 Stim: ADHD Sensory Calm: map the core Health & Fitness workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Stim turns your screen into a sensory experience. Designed for people with ADHD and restless minds, it combines touch, sound and sight into a single calming interaction. Drag your finger to paint flowing trails of colour. Feel smooth haptic pulses respond to every movement. Ambient sound fades in as you touch and fades out when you stop — putting you in complete control of the experience. HOW IT WORKS - Your finger is the controller. Drag to create smooth, colourful trails that gently fade away. Tap anywhere for a ripple burst with particles. The longer you interact, the deeper you settle into a calm, focused state. - Sound responds to your touch. Choose from five ambient soundscapes — calming tones, white noise, rain, thunderstorm or dreamscape — and they'll swell in as you drag, then softly fade when you lift your finger. - Haptic feedback is tuned to feel satisfying without being distracting. Gentle pulses accompany your movements, grounding you in the tactile experience. FEATURES - Touch-reactive ambient soundscapes that fade in and out with your finger - Smooth haptic feedback tuned for sensory comfort - Five sound environments: Calming Tones, White Noise, Rain, Thunderstorm, Dreamscape - Vibrant colour trails with particles and ripple effects - Dark and light mode - Full-screen immersive experience with no distractions - Minimal, beautiful interface that stays out of your way DESIGNED FOR ADHD - Stim isn't a productivity tool or a meditation timer. It's a sensory space. Use it when you need to decompress, during a break, before bed, or any time your mind needs somewhere to land. - No accounts. No ads. No tracking. Just you and the screen.
Written user reviews are not shown here. Check current App Store reviews >
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
Implement a feature for user-generated sounds or sound packs.
Assumption to check: Limited sound selection can lead to user fatigue.
Validate with people who use this workflow before building.
Hypothesis 2
Add social features to share favorite sounds or settings.
Assumption to check: No social sharing options limit user engagement.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to create playlists or favorite sounds.
Assumption to check: Lack of customization options for users.
Validate with people who use this workflow before building.
Hypothesis 4
Consider a freemium model with optional premium content.
Assumption to check: Single payment model might not attract diverse user base.
Validate with people who use this workflow before building.
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
Not assessed in a Build Kit yet.
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.
