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
MarkWell — Bookmark Manager
MarkWell is a native bookmark manager for Mac, iPhone, and iPad
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 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
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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.
JavaScript is required to complete mailbox verification.
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 MarkWell — Bookmark Manager: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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 better tagging and filtering features.
Assumption to check: Users often struggle with organizing a large number of bookmarks.
Validate with people who use this workflow before building.
Hypothesis 2
Create a simple import tool for easy migration.
Assumption to check: Importing bookmarks from other browsers is not straightforward.
Validate with people who use this workflow before building.
Hypothesis 3
Enable local storage for offline access.
Assumption to check: Lack of offline access to bookmarks.
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize bookmark card styles.
Assumption to check: Limited customization options for bookmark appearance.
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
MarkWell is a native bookmark manager for Mac, iPhone, and iPad. Save links from anywhere, organize them with tags, and find them again later — across all your devices, with no separate account to manage. SAVE FROM ANYWHERE Share any URL from Safari, Mail, Messages, or any other app, straight into MarkWell using the system share sheet. The app fetches the page's title and favicon for you, so the bookmark looks right the moment it lands. TAGS, NOT FOLDERS Tag a link with as many ideas as it has. Filter the sidebar by tag to find things by mood, topic, or project — whatever sticks in your head. No nested folders to maintain, no rigid structure to fight against. SYNCED THROUGH YOUR OWN ICLOUD Bookmarks sync end-to-end through your own iCloud account using Apple's CloudKit framework. There is no MarkWell account, no MarkWell server, and no analytics. Your data stays under your Apple ID, and the same bookmark you save on your iPhone shows up on your Mac a few seconds later. PRIVACY-FIRST MarkWell collects nothing. The only network call the app makes on its own is to read the title and favicon of a URL when you save it. There are no third-party SDKs, no advertising, no telemetry. The privacy policy at bendansby.com/apps/markwell/privacy.html spells it out in detail. REQUIREMENTS - Mac running macOS 14 Sonoma or later - iPhone or iPad running iOS / iPadOS 17 or later - Optional: iCloud account for cross-device sync (works fully offline without one) Feedback welcome — [email protected].
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
React Navigation
Zustand
React Native Paper
BUILD KIT DIFFICULTY
Intermediate
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.
