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
Tab Space – Tab Saver
Tab Space keeps browser tabs organized as reusable sessions on iPhone and iPad.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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 included15 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.
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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 Tab Space – Tab Saver: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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 advanced filtering and sorting options.
Assumption to check: Users often find tab management cluttered and inefficient.
Validate with people who use this workflow before building.
Hypothesis 2
Introduce swipe gestures for quick access to favorites.
Assumption to check: Difficulty in quickly accessing favorite tabs.
Validate with people who use this workflow before building.
Hypothesis 3
Add customizable notifications for saved tabs.
Assumption to check: Lack of notifications for tab updates or reminders.
Validate with people who use this workflow before building.
Hypothesis 4
Implement cloud sync for tabs.
Assumption to check: Inability to sync tabs across devices.
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
Tab Space keeps browser tabs organized as reusable sessions on iPhone and iPad. SAVE FROM ANYWHERE Capture your open Safari tabs with the Tab Space Safari extension, or send individual links to Tab Space from the system share sheet. SESSIONS AND TAGS Turn a group of tabs into a named session. Add tags to keep projects, research, reading lists, and personal plans easy to navigate. FAVORITES AND TRASH Keep important sessions close with Favorites. Move sessions to Trash when you are finished, with control over when they are permanently removed. OPEN ALL Open every tab in a session inside Tab Space's built-in browser. A favicon tab strip makes it easy to move between saved pages without losing your place. SYNC WITH TAB SPACE FOR MAC When you use the same iCloud account, your sessions can stay in sync with Tab Space for Mac—save at your desk and continue on iPhone or iPad. SEARCH EVERYTHING Quickly find sessions by title, website, URL, or tag. SHARE YOUR WAY Send a tab or a complete session as Markdown or plain text. When you choose Online Share, create an expiring, unlisted mytab.space link and revoke it anytime. MADE FOR IPAD Use the spacious split-view layout to browse your session list and saved tabs side by side. DARK MODE Tab Space follows your device appearance with a carefully designed light and dark interface.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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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
React Navigation
React Native Paper
Zustand
TypeScript
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.
