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
AI QuickSolver
your everyday math assistant - for study, work and life
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
479 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/
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 AI QuickSolver: map the core Utilities 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 efficient caching of responses to improve speed.
Assumption to check: Slow responses from AI under high load
Validate with people who use this workflow before building.
Hypothesis 2
Enhance NLP capabilities to understand diverse question styles.
Assumption to check: Limited question formats accepted
Validate with people who use this workflow before building.
Hypothesis 3
Standardize design elements and styles throughout the app.
Assumption to check: Inconsistent user interface across screens
Validate with people who use this workflow before building.
Hypothesis 4
Add features to allow users to personalize their experience.
Assumption to check: Lack of customization options for 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
your everyday math assistant - for study, work and life from calculating math problems, taking photos to search for problems, and doing handwritten calculations, to analyzing basic data, calculating date intervals, and calculating body mass index (bmi) - this all-in-one calculator app is designed for study and daily use. whether you are in class, at work, or handling personal affairs, everything you need is at your fingertips. features you’ll love: unit & currency converter quickly convert measurements, currencies, and units across multiple categories. photo problem solver take a picture of your question and get instant step-by-step solutions. scientific calculator solve complex math problems with ease — from algebra to trigonometry and beyond. handwriting pad write out equations freely like on paper, with smart recognition and real-time solving. everyday utilities calculate date differences, track bmi, analyze basic data, and more. perfect for students, professionals, and anyone who needs a smart assistant for numbers and daily tasks. privacy policy: https://freyadev.xyz/privacy.html terms of user: https://freyadev.xyz/terms.html
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
Axios
Zustand
React Navigation
React Native Clipboard
BUILD KIT DIFFICULTY
Advanced
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.
