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.
Move and pinch and fractals in real-time! Explore Mandelbrot and Julia sets on your iPhone and iPad
$2.99 · 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 Fractals: 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: High price point for full features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Slow performance 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.
Move and pinch and fractals in real-time! Explore Mandelbrot and Julia sets on your iPhone and iPad. Select multiple fractal equations and enter your own values for Julia sets. Save fractals to your photos to share with friends and collect them in your fractals album. Fractals by Jochya "Shear aesthetic power opens a new art venue and opportunity to surpass all previous styles of ornamentation. The revelation of self- similarity across orders of magnitude is wonderfully illustrated here: the possibility of incorporating non-fractal elements remains an exciting potential giving a new perspective on perspective." Fun by EriQuintero "Very fun app for creating fractals pictures on iPhone." Exciting, beautiful, meditative by amusante "I am a color junkie. I am a math junkie. I am a pattern junkie. This app is perfection for me. The graphics are wonderful and the pattern flows are beautifully done. I could and often do, veg out on this when I'm problem-solving. Seems to trigger all the right neurons." Fractals totally worth it for schools by avsig "Awesome app, and an excellent way for secondary teachers to inspire and motivate students to explore and understand post-calculus topics!!!" Great starter for understanding Fractals by kami-1 "I really appreciate this work. Certainly worth the price tag. Hope it grows with more possibilities and options." lilgrey by Excellent ! "With so many color possibilities and very fast I have saved hundreds of beautiful pics." epic by LSperring "I've almost been waiting my whole I-pad experience to find a fractal app!" I've almost been waiting my whole I-pad experience to find a fractal app!? it by Willis936 "Render times are shorter than any other one I've used, does not go to infinity but you can spend 10 minutes trying to get there. Depth and technical options are much great. Buy this app!" Awesome! by Jesusfreak147 "I absolutely LOVE fractals! It's amazing that math equations do all of this!" Wow! by daralatho "This is an amazing App. It uses the iPad's multi-touch interface very intuitively. It's the best of the Fractal Apps I've found. I could spend hours playing and creating. The ability to save and quickly share makes it very fun." Worth it by COB Masters "This app is absolutely amazing. It has intuative controls and runs smoothly." Update is perfect! by Emppu66 "Thank you for working out so many kinks! Zoom is so much better and detail is improved! I love fractals and the improvements made this the perfect fractal app!" The Thumbprint Of God by Earl C Grey "That was the term Arthur C Clark used when referring to The 'M' Set, insomuch that one can see all kinds of various natural forms in this simple equation. Perhaps it's the formula used by nature herself when creating coral reefs, seahorses, elephants, ferns, and the plethora of familiar organic shapes revealed in a Mandelbrot zoom. This app is fantastic! The colors: Vibrant. The zooms go into infinity. None of the 'crashes' one experiences in some of the lesser fractal generators out there. I LOVE it! My favorite iPad app so-far."
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.