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
Zombify - Turn into a Zombie
Zombify - Give yourself a moving ZOMBIE face!
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
699 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 included17 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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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 Zombify - Turn into a Zombie: map the core Entertainment 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
Add more diverse and customizable filters.
Assumption to check: Limited filter options compared to other apps
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image processing for stability.
Assumption to check: Occasional crashes during photo processing
Validate with people who use this workflow before building.
Hypothesis 3
Provide clearer explanations and previews of purchase options.
Assumption to check: In-app purchases can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Integrate sharing options for social media directly within the app.
Assumption to check: Lack of social sharing features
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
Zombify - Give yourself a moving ZOMBIE face! USA TODAY - "I can't get enough of turning myself into an animated Zombie (Zombify), Werewolf (Wolfify), [or] Vampire (Vampify)" - Jennifer Jolly Zombify is the zombie face booth that will transform you into a biting, groaning, brain-eating zombie! It's undead augmented reality... for your FACE! CUSTOMIZE: - Tons of gruesome mouth & eye options - Lodge crossbow bolts, crowbars and other weapons in your zombie faces - Add creepy creatures to your corpses... Snakes, roaches, maggots... oh my! - Pick image filters to get just the right grunge factor for videos and photos - Change environments to Underwater, Subway, buried and more! INFECT FRIENDS & SPREAD THE ZOMBIE VIRUS: - Bite your friends by sharing and actually see how many people you infect with the Zombie contagion! - Easily share photos and videos with MMS, Whatsapp, Instagram, YouTube, Vimeo, Twitter, Facebook, Tumblr, Flickr, and Email (+gmail). - "Biting" and "Infecting" friends also unlocks special effects and weapons. 3D ANIMATIONS & EVENTS: - From dangling eyeballs to moving maggots, you’ll scare the pants off your friends with Zombify’s realistic, effects and animation. - Shock, burn, blast and drown your zombies and export videos that are scarier than horror films! - Animated weapons, environments, and crawling creatures amp up the scare factor. Undead. Walkers. Biters. Geeks. Roamers. Lame brains. Lurkers. Zekes. Whatever you call ‘em, you’re about to be one. Follow along with us on Instagram at @apptly and share your SCARIEST creations using #zombify.
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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.
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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.
