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
Unofficial Z8 Pro Guide
Master your Z8 with the most comprehensive interactive guide available
$14.99 · In-app purchases
PRICE
$14.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
21 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's included16 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 Unofficial Z8 Pro Guide: map the core Photo & Video 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
Include advanced editing tools like filters and adjustments.
Assumption to check: Limited editing features compared to other apps
Validate with people who use this workflow before building.
Hypothesis 2
Offer a freemium model with essential features available for free.
Assumption to check: High price point for access
Validate with people who use this workflow before building.
Hypothesis 3
Integrate social sharing and community forums for users.
Assumption to check: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 4
Ensure compatibility with a wider range of devices and screen sizes.
Assumption to check: Limited device support
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
Master your Z8 with the most comprehensive interactive guide available. Whether you're just unboxing your Z8 or looking to unlock its full potential, this app walks you through everything — from initial setup to advanced shooting techniques. WHAT'S INSIDE: Complete camera setup guide from first switch-on. All buttons and controls explained. Focus modes, AF area modes and subject detection. Essential settings for RAW, Auto ISO and exposure. Cheat sheets for Portrait, Landscape, Wildlife, Low Light and Macro. Full menu system explained with exact menu paths. Gear recommendations from a working professional photographer. BUILT-IN TOOLS: Golden Hour & Blue Hour Calculator with satellite map and sunrise/sunset direction lines. Moon Phase Calculator with moonrise/moonset times and moon direction map. Milky Way Visibility Planner with galactic core direction and shooting window. NPF Astrophotography Calculator for pin-sharp stars on the Z8's 45.7MP sensor. Depth of Field and Long Exposure Calculators. WORKS OFFLINE: Content is cached after first load so you can access your guide anywhere. This is an independent guide and is not affiliated with or endorsed by Nikon Corporation.
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
Supabase
React Navigation
Zustand
@react-query
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.
