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
Allert - for food allergies
Allert is the food allergy app for travelers
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
2 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 included15 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 Allert - for food allergies: map the core Food & Drink 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 extensive food database with user contributions.
Assumption to check: Limited food database and search functionality
Validate with people who use this workflow before building.
Hypothesis 2
Utilize reliable sources for allergen information and allow user ratings.
Assumption to check: Inconsistent allergen information
Validate with people who use this workflow before building.
Hypothesis 3
Add community forums or comment sections for users to share tips.
Assumption to check: Lack of community features for sharing experiences
Validate with people who use this workflow before building.
Hypothesis 4
Offer a freemium model with basic features available for free.
Assumption to check: Subscription model can deter some 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
Allert is the food allergy app for travelers. Having a food allergy is a reason for many people not to travel abroad. After all, how are you going to tell people about your situation when you don't speak the local language? Our app assists you in solving this problem. ▶ FEATURES ● Works everywhere and anywhere; no network, data, or WiFi required. ● Allert's 14 supported allergies cover 95% of all food allergy cases: Peanuts, Tree Nuts, Dairy, Eggs, Fish, Shellfish, Soy, Gluten, Mustard, Celery, Sesame Seeds, Sulfur Dioxide, Lupine, and Mollusca. ● 44 supported languages allow you to communicate your dietary needs in almost every country in the world: Arabic, Bengali, Burmese, Catalan, Chinese Simplified, Chinese Traditional, Croatian, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Javanese, Kannada, Khmer, Korean, Malay, Malayalam, Maori, Marathi, Nepali, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish, Tagalog, Tamil, Telugu, Thai, Turkish, Urdu, and Vietnamese. ● Are you following a vegetarian or vegan diet? Allert has you covered with five different vegetarian lifestyle choices to display alongside the allergy warning: Lacto-Ovo Pescatarian, Lacto-Ovo vegetarian, Lacto Vegetarian, Ovo Vegetarian, Vegan. ● Human translations only. We hired native speakers for each language to ensure the highest accuracy possible. All translations have been triple-checked by at least two different people. ● Allert contains a mini-guide filled with useful tips and advice to deal with your food allergies during your travels. ▶ BACKSTORY A rudimentary pre-release version of Allert has been rigorously field-tested across the globe by one of the members of the development team, who is severely allergic to dairy and peanuts. After visiting eight countries with languages and alphabets foreign to him, he arrived back home alive and well. The app got positive responses and compliments from locals on top of that, which was our cue to kickstart the development of Allert and turn it into an actual app. After more than two years of hard work, we are finally here. Keep an eye on our website. We have big plans for the future of helping people with allergies through smart apps: https://allertapp.com ▶ VERSION HISTORY 1.4.2 (December 2025) -Bug fixes 1.4.1 (October 2025) -Bug fixes 1.4 (September 2025) -Updated app for iOS 26 compatibility -Cleaned up links in side-menu -Bug fixes 1.3.2 (August 2025) -Bug fixes 1.2 (July 2020) -Made the app compliant with the latest version of iOS. -Improved the functionality for the contact form for people running a third-party email app. -Streamlined the onboarding process. -Optimized some code to make things leaner & meaner. -Fixed a visual glitch in the welcome-screen. -Added images for 6.5" iPhones to the App Store. 1.1 (January 2020) -Internal/experimental release. 1.0.1 (August 2018) -Tidied up Dutch language output. -UI optimizations. 1.0 (July 21, 2018) -Initial release.
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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
Zustand
Axios
React Navigation
Supabase
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.
