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.
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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 ionBible: KJV Study Bible: map the core Books 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 search functionality
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchase confusion
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Basic UI/UX
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.
Every tool a serious student needs — fully offline. No Wi-Fi, no cell signal, no problem. KJV Study Bible brings the complete King James Bible together with a full library of study tools — Strong's Concordance, original Greek and Hebrew, verse-by-verse commentary, cross-references, audio, split-screen reading, personal notes, and reading plans — all in one app. 100% OFFLINE — STUDY TOOLS INCLUDED No internet required for study. Strong's Concordance, Greek and Hebrew lexicons, commentary, cross-references, and the full Bible text are all stored locally on your device. Open the app anywhere and your entire study library is ready — no loading, no buffering, no subscription required. TAP ANY WORD. FIND THE ORIGINAL. Every word in the King James Bible is linked to Strong's Concordance. Tap a word to instantly see the original Greek or Hebrew term, its precise definition, its root, and every verse in Scripture where that word appears. Understand exactly what the biblical authors meant — in their own language. COMMENTARY & CROSS-REFERENCES Trusted verse-by-verse commentary throughout the Old and New Testaments. Every chapter is also rich with cross-references connecting passages across all 66 books — see how Scripture interprets Scripture. RED LETTER BIBLE The words of Jesus are displayed in red throughout the New Testament — making it easy to follow His teachings and identify His voice at a glance. AUDIO BIBLE Listen to the King James Bible verse by verse with a clean player that follows along as you read. Perfect for commutes, walks, or any moment when your eyes are busy. Requires an internet connection. SPLIT-SCREEN MODE Read two Bible translations side by side, or browse the book list while keeping your chapter open. A powerful tool for comparison, in-depth study, and translation insight. POWERFUL SEARCH Intelligent search that understands natural queries. Want every verse in John that mentions Jesus and love? Type "jn jesus love" and see results instantly — across all 31,102 verses, even offline. HIGHLIGHTS, NOTES & TAGS Mark verses in five elegant pastel colors. Write personal notes, attach them to specific verses, and tag them by topic — "Faith," "Prayer," "Prophecy." Everything lives in your Notes and Activity pages, ready to revisit anytime. READING PLANS Choose from structured plans — Bible in a Year, New Testament in 90 Days, Psalms & Proverbs, The Gospels — or create your own custom plan. Track daily progress, mark days complete, and pick up exactly where you left off. SYNC ACROSS DEVICES Sign in to sync your highlights, notes, and reading history across all your devices and ionbible.com. Switch phones, upgrade your device — your study is always safe. SHARE THE WORD Select any passage and share it instantly with a web link that lets the recipient read the full context. Perfect for encouraging friends, group Bible study, or sermon preparation. PRAYER WALL Post prayer requests and stand in prayer for fellow believers around the world. Requires an internet connection. DESIGNED FOR SERIOUS READING Swipe up or down to move between chapters — as natural as turning a page. Choose your font, size, and theme color. Dark mode for night reading. The app remembers exactly where you left off. 6 TRANSLATIONS INCLUDED King James Version (KJV) · Reina-Valera Antigua (RVA) · Louis Segond (LSG) · Russian Synodal (RUSV) · Vulgate Latin · Biblia Sagrada (Almeida) No ads. No subscription. One purchase — yours to keep, forever.
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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.