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
Ilona Andrews
Your companion for every world Ilona Andrews has written.
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 5.0
189 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.
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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 included15 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 Ilona Andrews: 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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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 search and filtering capabilities.
Assumption to check: Limited discovery options for books
Validate with people who use this workflow before building.
Hypothesis 2
Add an algorithm for personalized suggestions based on user favorites.
Assumption to check: No personalized recommendations
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to download books for offline reading.
Assumption to check: Lack of offline access
Validate with people who use this workflow before building.
Hypothesis 4
Introduce sharing options for books on social media.
Assumption to check: No social sharing features
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
Your companion for every world Ilona Andrews has written. Whether you're mid-Magic Bites, waiting for Maggie the Undying, or trying to remember which Baylor sister is which, this app is a home base for the whole universe. WHAT'S INSIDE EVERY SERIES, EVERY BOOK Browse all ten series — Kate Daniels, Hidden Legacy, Innkeeper Chronicles, The Edge, Iron Covenant, Aurelia Ryder, Wilmington Years, Maggie the Undying, Breach Wars, and standalone fiction. Full reading orders, book details, retailer links, and spice ratings. INTERACTIVE MAP OF KAIR TOREN The complete illustrated map from the Maggie the Undying media kit — pan, zoom, and tap 20 numbered landmarks to read Sushi the stelka's own notes on each one. THE OFFICIAL MAGGIE THE UNDYING ENCYCLOPEDIA Cast, great families, orders, glossary, and faction heraldry — with official character portraits by the artists who brought them to life. MEET THE ARTISTS Profiles of the illustrators and designers behind the portraits, landscapes, heraldry, and map — with links to follow and support their work. FREE FICTION LIBRARY Every free short story Ilona and Gordon have published, in one place. Read with adjustable text-to-speech, spoiler gating, and reading progress synced across sessions. THE BLOG, IN THE APP The latest posts from ilona-andrews.com — release news, appearances, snippets, and Beast Reports. Read comments from the community without leaving the app. BDH BINGO The Book Devouring Horde's favorite pastime. Mark tropes as you read, chase BINGOs and DEVOUR-ALLs, unlock secret achievements, earn reward discount codes. TAKE THE QUIZ Never read Ilona Andrews before? Take a 30-second quiz — we'll point you to the perfect series to start with. MADE WITH CARE Dark mode, high-contrast palette, Dynamic Type support, VoiceOver-friendly. Locally-stored progress — no accounts, no tracking, no ads. The official companion app for the worlds of Ilona Andrews, published with the authorization of Ilona Andrews, Inc. All character illustrations © their respective artists, credited in-app.
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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
React Navigation
React Native Async Storage
Axios
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.
