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
Northern Lights Photo Taker
This app only does one thing and that's to help you take better photos of the aurora borealis, aka the northern lights.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.7
154 ratings · Below Average
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 included14 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 Northern Lights Photo Taker: 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
Implement advanced camera settings for better low-light performance.
Assumption to check: The camera functionality may not be reliable in low-light conditions.
Validate with people who use this workflow before building.
Hypothesis 2
Add more editing options like advanced filters and AI enhancements.
Assumption to check: Limited editing features compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify navigation and provide better onboarding tutorials.
Assumption to check: The UI can be confusing for new users.
Validate with people who use this workflow before building.
Hypothesis 4
Provide clearer descriptions and previews for premium features.
Assumption to check: In-app purchases can be unclear and frustrating.
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
This app only does one thing and that's to help you take better photos of the aurora borealis, aka the northern lights. Here's the scenario - so you see the northern lights (!! - awesome for you, by the way), but you don't have a fancy digital camera with you. Thankfully, you have your trusty iPhone or iPad! OK! Now what?? Do you know the tips and tricks to take photos of the northern lights ? Great, if you do! Enable manual mode; set the focus to infinity; change the temperature to a certain number; change the ISO between certain values; change the shutter speed to something else....wait what...? Don't worry, this app does all of that for you so all you have to do is find those lights. ISO, shutter speed, long exposure mode, temperature, check check check. There are 3 presets that you can choose from based on the brightness of the aurora lights that you're seeing. Those don't work? Try out custom mode until you get that 'good-enough-for-me-to-show-to-my-friends' snap and take as many photos as you'd like! Worth a shot ! (hah..a...was funny when this was typed...)
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
expo-camera
react-navigation
@supabase/supabase-js
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.
