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
QuickReader - Speed Reading
The #1 speed-reading technology on earth
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
616 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 included17 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 QuickReader - Speed Reading: 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
Integrate with external book APIs to expand library offerings.
Assumption to check: Limited book selection compared to larger platforms
Validate with people who use this workflow before building.
Hypothesis 2
Implement finer speed controls with presets.
Assumption to check: Difficulty in adjusting reading speed precisely
Validate with people who use this workflow before building.
Hypothesis 3
Simplify UI and enhance user guidance.
Assumption to check: User interface can be cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a freemium model with more free content.
Assumption to check: Subscription model may deter casual users
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
The #1 speed-reading technology on earth. (And maybe even Mars.) From best-selling novels to how-to books to self-improvement to business reports and more, our proven software guides—and trains—your eyes to read at a rapidly accelerated rate. READ FASTER BY 2-3X, SUPER HUMAN STYLE Set your reading speed from 10-4,000 words per minute, and keep challenging your own time. With a couple of taps, the app speeds up, and you can always control how fast you go. Most people are shocked at how efficient they are while still processing and retaining information! (You can read normal, too, just in case.) CUSTOMIZABLE EVERYTHING (EVEN THAT) From designer color schemes to fonts; margins to interface, the app bends to your will with every preference, making this the perfect “skin” for you to read all of your books on, no matter how fast or slow. TOUCH FREE AUTO PILOT (AKA FLASH LIGHTNING MODE) With Guided Reading Technology, you set the speed and the pages turn for you. And the best part? The gains you make in-app carry over to regular, un-guided reading.Throw in a butler and some fancy cheese and you might just be set for life. (Or at least have a pretty sharp advantage over all of mankind.) BONUS ACCESS: 2 MILLION BOOKS, FOR FREE! Books are our world—and we’ve got an entire family of apps dedicated to book lovers. That means we can also bring you all sorts of access to free titles that other speed reading apps can’t. Hip, hip, hooray! WHAT THEY SAY “[QuickReader] brings a much-needed breath of fresh air to the world of speed reading apps." — ReadWriteWeb "QuickReader is a speed-reading tool that can produce remarkable results. I was shocked by the rate at which my speed improved. [...] By far the most fascinating application I've reviewed in a while." 4.5 stars, MAGICAL - 148Apps
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
Supabase
Zustand
React Navigation
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.
