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
Grifols Plasma Donor Hub
Your Plasma Donation experience just got smoother! Grifols DonorHubTM is your go-to place for all your plasma donor needs
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
53,026 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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Combine features and design from your favorite apps.
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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 Grifols Plasma Donor Hub: map the core Medical 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 a more prominent and accessible bottom tab navigation.
Assumption to check: Users often find it difficult to navigate between different sections quickly.
Validate with people who use this workflow before building.
Hypothesis 2
Add a step-by-step appointment scheduler with visual cues.
Assumption to check: Scheduling appointments can be confusing without clear steps.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance health metrics tracking with more options and insights.
Assumption to check: Limited health tracking features compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 4
Improve backend reliability and data synchronization features.
Assumption to check: Some users report issues with data syncing.
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 Plasma Donation experience just got smoother! Grifols DonorHubTM is your go-to place for all your plasma donor needs. —————————————————————————————————————————— Use Grifols DonorHub™ to: • Check your donation and compensation history - Details of your most recent donation are available in Grifols DonorHub™ 24 hours after your visit. • Stay up-to-date on all things Grifols Plasma- Enable push notifications to never miss an update. • Receive tips to help prepare for your next plasma donation. • Learn what happens to your plasma after your donation. • Schedule your donation appointments. • Refer a Friend: Spread the Word & Earn Rewards: Easily refer friends and family to become plasma donors. • Ask the Chatbot any question you have —————————————————————————————————————————— Tips for a Better Donation Experience 7. Drink at least 12-to-24 ounces of water or a sports drink 30-to-60 minutes before your donation. Proper hydration helps ensure the procedure is well-tolerated and recovery is quicker. 8. Limit caffeinated beverages and milk on the day of your donation, as they reduce iron absorption and can elevate your pulse. 9. Avoid alcohol the day before and the day of your donation to prevent dehydration. 10. Avoid foods high in saturated fats and cholesterol the night before your donation, as they can make the donation process longer. 11. Get a good night’s rest before your donation to aid in quicker recovery. 12. Discontinue and avoid all tobacco products before donating, as they may increase your blood pressure and heart rate. —————————————————————————————————————————— Getting started is easy: If you're already registered in Grifols DonorHub™: Just download the app and log in! The Grifols DonorHub™ app has all the features found in the web version. If you're not registered yet: Download the Grifols DonorHub™ app. Register for Grifols DonorHub™: Enter your registration number, name, date of birth, mobile phone number, email address, and choose a password. Don’t forget to turn on notifications for Grifols DonorHub™! —————————————————————————————————————————— Stay connected with us: • Visit our website: https://www.grifolsplasma.com/en/donor-hub • Follow us on Facebook: https://www.facebook.com/grifolsplasma1940 • Follow us on Instagram: https://www.instagram.com/grifolsplasma_us/?locale=fr • Join our WhatsApp channel: https://www.whatsapp.com/channel/0029VacoAHFHltYELrquem3R
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
React Navigation
Axios
React Query
Async Storage
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.
