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.
Simply the best
$3.99 · 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 I-Ching App of Changes: map the core Lifestyle 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 content updates and insights
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inadequate user engagement features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Difficult navigation for new users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited customization options
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.
Simply the best. Whether you're new to the I Ching or have used the book as an oracle, an aid to creativity, or a mirror of your subconscious, you'll love the clarity of writing, the intuition in the design, and the simplicity of use of this digital I Ching or Yi Jing. The modern, no-nonsense interface delivers new users straight to the basics: you ask a question, the I-Ching answers. For old souls who know the book well this app holds a wealth of features for deeper research. There's a journal where you can save and search your questions and readings, a notes area where you can record any length of text as context, a lookup library organized by number and trigram. You can recreate any I Ching reading using decimal notation. Cast a line at a time, an entire hexagram with a button press, or shake the phone gently to cast virtual coins. Original Chinese text and the Legge Translation included in an alternative selectable library. The I Ching software engine emulates precisely the ancient yarrow stalk method, which was slightly more likely to cast yang than yin. A changing yin line is very rare using stalks, but of equal probability to changing yang using coins. The ancient divination method uses stalks rather than coins. If you prefer to count your own stalks or cast your own coins there's a manual hexagram builder to look up and record your results. The wisdom and philosophy of the ancient Chinese texts blend seamlessly with commentaries that gently mix a dash of modern poetry, a pinch of humor, and cultural grace notes from the worlds of art, music, divination, literature and Human Design to bring you what many daily users have called the very best I-Ching app available. --------- Among my favourite reviews: "Of all the versions I've used, your renderings of the Book of Changes are my heart-felt favorites. They have inspired me, made me laugh and cry and everything in between." “Pretty profound! This Iching app gave me spot-on advice. I've never paid for an app before, but I had a strong urge to get this one. I'm impressed! Not to sound all new-age but I totally laughed out loud at the reading it gave me, it was like it was sitting here looking over my shoulder and telling me exactly what I needed to know about my grumpy husband. P.S. Grumpy husband called and apologized..." "Carl Jung would have been happy to have this Yi Jing on his phone - great to use, unfussy, untechy, respectful of the original. The journal feature is great for storing readings and referring back. Well done!" --------- All of us sometimes need a sympathetic ear and wise guidance, whether it's in matters of romance or finance: the I-Ching can become a companion along life’s journey like no other. It's a book that helps you explore questions and, if you're lucky, find answers: Whether you believe it's because the book is an oracle or the answers are simply unearthed from your subconscious -- the book's true magic lies in its ability to be a helpful guide (sometimes astoundingly so) to all these different forms of curiosity. Following the tradition of Baynes and countless interpreters of the original texts, I've written commentaries which borrow words and inspiration from a multitude of sources: Bob Dylan, Lao Tzu, Doctor Who, the Tarot, T.S. Eliot, Emily Dickinson, John Lennon, Maya Angelou, the Grateful Dead and Martin Luther King all make appearances. The language, unlike so many translations, makes every attempt to be gender-neutral when it's not gender-specific. I wanted the sparest interface possible. No fake parchment backgrounds, no gimmicky images of bamboo or cartoon sages with oracles and winning lottery numbers. I strived to create a quiet, reflective, slowed down experience in an environment that normally shouts. I hope you enjoy using this I-Ching app as much as I enjoy crafting it, improving it, and hearing from people who have found it helpful in their lives.
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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.