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
NovelFlow-Unlimited Books
NovelFlow - A World of Stories at Your Fingertips!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
11,803 ratings · Top 15%
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/
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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 NovelFlow-Unlimited Books: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
NovelFlow - A World of Stories at Your Fingertips! Book Genres: Werewolf, Romance, Billionaire, Fantasy, Paranormal, Sci-Fi, Mystery, Thriller, and more. Listen & Read: Access 500,000+ Ebooks and Audiobooks anytime. Offline Access: One-tap downloads for seamless reading without Wi-Fi. NovelFlow brings you a massive collection of trending web novels and engaging stories, providing the latest chapters with a premium reading experience. Whether you prefer to read on the go or listen to your favorite titles, NovelFlow is the essential app for every fiction lover. Start your next adventure by downloading the NovelFlow app today! Why Choose NovelFlow? Massive Library: Over 500,000+ titles featuring trending novels and fanfiction. Listen Anywhere: High-quality audiobooks for a hands-free experience. No Wi-Fi? No Problem: Download entire books to read offline with zero data usage. Daily Updates: Fresh chapters delivered daily—never wait long for a cliffhanger. Diverse Book Genres NovelFlow contains a vast array of genres designed to satisfy every craving. From heart-pounding Werewolf and Billionaire romances to immersive Fantasy and Sci-Fi worlds, our collection is deeply loved by our global community. Find your favorite story on NovelFlow and start reading without delay! Trending Novels at NovelFlow If you’re looking for the hottest stories online, you’ll find them here: Game of Destiny Fates Hands Chasing His Wolfless Luna Back A Pack of Their Own Scars, Don't Poke the Luna Heartsong The Silver Hope The Last Spirit Wolf Customize Your Reading Style We believe reading should be comfortable. Tailor your experience with our built-in tools: Light & Dark Modes: Easy on the eyes, day or night. Custom Fonts: Choose the typeface that suits you best. Theme Adjustments: Personalize your reading interface. Cross-Device Sync: Pick up exactly where you left off on any device. Support Our Authors To maintain a high-quality creative environment and support our authors in producing the stories you love, NovelFlow offers flexible ways to enjoy your journey: Ad-Free Subscription: You can choose to upgrade for a seamless, ad-free experience. This is a direct way to support your favorite writers and help them obtain a stable income to continue their creative work. Reward Tasks: Alternatively, complete simple in-app tasks to earn rewards and unlock new chapters for free. Automatic Subscription Renewal Payment: Upon confirmation of purchase, the fee will be charged to your account. Renewal: Your membership will automatically renew 24 hours before the current period ends to ensure uninterrupted access. Manage Subscription: You can easily manage or cancel your subscription in your account settings at least 24 hours before the renewal date. Contact Us We value your feedback and want to hear from you! Official Website: https://www.novelflow.app/ Facebook Group: NovelFlow Instagram: @novelflow_freenovels TikTok: @novelflow.story YouTube: @NovelFlow_Story Legal Links: Privacy Policy: https://www.novelflow.app/privacy-policy.html Terms of Use: https://www.novelflow.app/terms-of-service.html Subscription Terms: https://www.novelflow.app/subscription-terms-of-service.html
Written user reviews are not shown here. Check current App Store reviews >
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 a broader library with user-friendly categories.
Assumption to check: Limited selection of books compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the paywall and improve clarity on subscription benefits.
Assumption to check: In-app purchase process can be confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Implement advanced filtering and sorting options.
Assumption to check: Search functionality is not robust.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance app performance and stability.
Assumption to check: Users report app crashes during heavy usage.
Validate with people who use this workflow before building.
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.
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BUILD KIT DIFFICULTY
Expert
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.
