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
Brainly: Your Personal Tutor
Your kid deserves a personal tutor
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
284,148 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Brainly: Your Personal Tutor: map the core Education 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 offline caching for questions.
Assumption to check: Limited offline access to questions and answers
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize notification settings.
Assumption to check: Overwhelming notifications for users
Validate with people who use this workflow before building.
Hypothesis 3
Enhance search functionality with recommendations.
Assumption to check: Difficulty in finding similar questions
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate gamification features to encourage answer contributions.
Assumption to check: Low engagement on user answers
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 kid deserves a personal tutor. Now they have one. Brainly gives your child one-on-one tutoring support in math, reading, science, and more — available 24/7, no scheduling required. Whether they're falling behind, prepping for a test, or just need help with tonight's homework, Brainly is there. Real human tutors. Smart AI. One app that actually works. Why parents choose Brainly: — Guaranteed Results See real grade improvement in four weeks — or we'll make it right. — Human Tutors + AI Support Your child gets help from real, qualified tutors backed by AI — not a chatbot pretending to teach. Every interaction is monitored and 100% kid-safe. — 100% Money-Back Guarantee Not satisfied? Full refund within 30 days. No questions asked. What your child gets: — Homework Help Stuck on a problem? Snap a photo or type it in. Step-by-step explanations help them actually understand the material — not just get the answer. — Test Prep From weekly quizzes to final exams, Brainly helps your child study smarter with personalized practice and guided review. — Math Support Algebra, geometry, trigonometry, calculus — no equation is too tough. Scan any math problem for a clear, step-by-step walkthrough. — Every Subject, Every Grade Math, science, history, English, and more. K-12 coverage that grows with your child. Trusted by 15+ million parents. Join families around the world who've made Brainly their go-to tutor. Less than a dollar a day for unlimited access. Access to Brainly is free with limited features. Upgrade to Brainly Tutor for the full experience including live human tutors. Get updates from us: — Instagram @brainly — Facebook @brainlygroup — TikTok @brainly Need help? https://brainly.com/contact | [email protected] Terms of use: https://brainly.com/pages/terms_of_use Privacy policy: https://brainly.com/pages/privacy_policy
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
Zustand
Axios
Firebase
React Navigation
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.
