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
UNiDAYS: Student Discount App
Join 20 million students around the world who use the student coupon app UNiDAYS to take advantage of amazing student and graduate deals like free shipping, promo codes, coupons, freebies, giveaways and more to save m...
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
164,673 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 UNiDAYS: Student Discount App: map the core Shopping 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
Provide personalized offers based on user preferences.
Assumption to check: Limited offers can lead to user frustration.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a guided onboarding process.
Assumption to check: Navigation can be confusing for new users.
Validate with people who use this workflow before building.
Hypothesis 3
Add clearer instructions and support for offer redemption.
Assumption to check: Users report issues with redeeming offers.
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
Join 20 million students around the world who use the student coupon app UNiDAYS to take advantage of amazing student and graduate deals like free shipping, promo codes, coupons, freebies, giveaways and more to save money and live college life to the max! With UNiDAYS, you can also find expert learning, study and wellbeing tools. STUDENT DISCOUNT APP and PROMO CODES These exclusive student deals and promo codes are just a tap away, all you need is your college email address to get started—it’s that easy! Save up to 50% every time you shop with hundreds of student and graduate offers on: - Fashion, shoes and accessories like ASOS, Boohoo, Shein, Ray-Ban, American Eagle, Farfetch, Forever 21, Calvin Klein, Ugg, Hollister, Levi’s, Aerie or Pretty Little Thing - Technology like Apple, Samsung, Verizon and B&H Photo - Beauty and skincare products from cosmetic brands like Charlotte Tilbury, MAC, GHD, Tarte and ColourPop - Food and drink brands like Uber Eats, Costco and Hello Fresh - Lifestyle and travel brands like Amazon, Disney+, hotels.com and GoPro - Sports brands like Under Armour, Adidas, Nike, Puma and Foot Asylum Plus study, wellbeing and mental health tools UNiDAYS has a wide range of tools to help boost your learning and personal development. Get better grades while keeping a happy and healthy mind through the ups and downs of college life with access to free mental health support, insights from professionals, online academic libraries and even creative classes. Learn data science, languages, grammar and more from expert educational tools like Chegg, Grammarly, MasterClass or Headspace. UNiDAYS: GET EXCLUSIVE DEALS ON YOUR FAVORITE BRANDS - Save money with your shopping deals and discounts both online and in-store - Regular giveaways and free stuff - College and university advice, fun polls and video content - Limited-time discounts over and above 50%! Check out UNiDAYS and get instant access to student perks, college deals, giveaways, coupons, freebies and opportunities each day! www.myunidays.com Instagram/Twitter: @MyUNiDAYS www.facebook.com/unidays
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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
Supabase
Redux
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.
