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
Grab: Taxi Ride, Food Delivery
Get everything you need with Grab — the leading ride-hailing, taxi, food delivery, and grocery app in Southeast Asia.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
254,773 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 included18 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 Grab: Taxi Ride, Food Delivery: map the core Travel 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
Offer lower fees or loyalty rewards.
Assumption to check: High service fees for rides and food delivery
Validate with people who use this workflow before building.
Hypothesis 2
Implement real-time driver tracking and estimated wait times.
Assumption to check: Occasional long wait times for rides
Validate with people who use this workflow before building.
Hypothesis 3
Introduce more payment methods, including cryptocurrencies.
Assumption to check: Limited payment options
Validate with people who use this workflow before building.
Hypothesis 4
Enhance customer support with chatbots and faster response systems.
Assumption to check: Inconsistent customer service response times
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
Get everything you need with Grab — the leading ride-hailing, taxi, food delivery, and grocery app in Southeast Asia. We offer essential everyday services to over 670 million people across Singapore, Indonesia, Malaysia, Thailand, Philippines, Vietnam, Cambodia, and Myanmar. Grab offers various ride-hailing options, including 4-wheel and 2-wheel rides, and taxi booking. There’s also a diverse range of services including food order delivery from restaurants, prompt package delivery, and groceries from supermarkets, making it a leading delivery platform. From ride-hailing to food and grocery delivery, Grab is your one-stop app for all your everyday needs in Southeast Asia. Book a ride for any occasion and budget Order a ride on Grab, the top ride-hailing and taxi app in Southeast Asia. Choose from a variety of transport modes, including cars, motorbikes, and buses, and get matched with a professional driver in minutes. Food delivery for any craving GrabFood: a leading food delivery app that allows you to easily order food from your favourite restaurants and get it delivered to your doorstep, making it convenient and hassle-free Conveniently order food and groceries for delivery GrabMart is a convenient food delivery app that allows you to order groceries and handpicked fresh produce from your favourite supermarket. Secure and seamless cashless payments GrabPay: A safe and secure mobile wallet where you can easily pay for Grab services, such as food and grocery delivery and taxis, as well as at local merchants Reliable on-demand package delivery GrabExpress: Order affordable, fast, and reliable courier service with insurance for your items Rewards for using Grab GrabRewards: Order food, ride and earn reward points for every dollar you spend and use them to redeem deals in the GrabRewards catalog Grab is the only ride-hailing and food-delivery app you need. Whether you are searching for a taxi app, express food delivery, or grocery delivery, Grab has got you covered. In addition to our renowned ride-hailing, taxi, and food delivery services, we also strive to promote economic empowerment for everyone in the region. We provide financial services such as wealth management, lending, cashless payments, and insurance. Find out more about us at www.grab.com. Grab offers the ability for users to receive personalized targeted advertising, offers, and updates from Grab and its partners and communications/advertising from certain third-party apps based on activity on your devices. Users may exercise opt-out choices under the Privacy and Consent Management sections within Settings within the app. For further details, you may refer to our Privacy Policy at www.grab.com/privacy.
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 Navigation
Supabase
Axios
React Native Maps
Redux
Expo
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.
