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
Tarbo PDF Creator
Tarbo PDF Creator helps you manage and create professional-quality PDFs with ease
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.4
91 ratings · Top 30%
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's included18 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 Tarbo PDF Creator: map the core Reference 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
Provide advanced editing options like annotations, text highlighting, and merging PDFs.
Assumption to check: Limited editing features compared to desktop PDF editors.
Validate with people who use this workflow before building.
Hypothesis 2
Offer clear explanations of premium features and a free trial for new users.
Assumption to check: In-app purchase model may confuse users with hidden costs.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize PDF loading and rendering for large documents.
Assumption to check: Performance issues with large PDFs.
Validate with people who use this workflow before building.
Hypothesis 4
Integrate with cloud services like Google Drive or Dropbox for easy access.
Assumption to check: Lack of cloud storage integration.
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
Tarbo PDF Creator helps you manage and create professional-quality PDFs with ease. Whether you're organizing personal materials or working on school projects, this app provides an intuitive experience for creating, organizing, and sharing your content. Key Functions: 1. Scan, Text, and Image to PDF: Effortlessly convert text and images into high-quality PDFs. Ideal for digitizing and storing important materials from your daily life or studies with just a few taps. 2. PDF Merge: Combine multiple PDFs into one file easily. Perfect for organizing documents and keeping your files in order. 3. History: Track all your created PDFs in one place. This feature helps you access your PDF creation history for easy retrieval. Download Tarbo PDF Creator today and discover how easy it is to streamline your workflow. —— SUBSCRIPTION TERMS—— ● Week Subscription: $12.99/ Week Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. You can cancel a free trial or subscription anytime by turning off auto-renewal through your iTunes account settings. This must be done 24 hours before the end of a free trial or subscription period to avoid being charged. The cancellation will take effect the day after the last day of the current subscription period, and you will be downgraded to the free service. If you have any issues, feedback, suggestions, or just wanna say hi, please contact at mail to: [email protected] so that we can offer you the best experience. Contact Us: [email protected] Privacy Policy: https://nqsk.fizzpdfaeo.com/privacyPolicy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
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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
Zustand
React Navigation
AsyncStorage
expo-image-picker
BUILD KIT DIFFICULTY
Starter
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.
