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
OneRoll Dual Recorder
Record once
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 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 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 OneRoll Dual Recorder: 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 non-destructive editing and filter features.
Assumption to check: Limited editing features after recording
Validate with people who use this workflow before building.
Hypothesis 2
Implement cloud storage for easy access.
Assumption to check: No cloud backup option for videos
Validate with people who use this workflow before building.
Hypothesis 3
Add onboarding tutorials and tooltips.
Assumption to check: Lack of user tutorials for beginners
Validate with people who use this workflow before building.
Hypothesis 4
Clarify premium features and provide a free trial.
Assumption to check: In-app purchases may confuse 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
Record once. Get portrait AND landscape. Automatically. Videos and Photos! OneRoll is the camera app built for creators who refuse to film the same thing twice. Hit record one time and get two perfectly synced videos — one in 9:16 for TikTok, Reels, and Shorts, one in 16:9 for YouTube and widescreen — saved straight to your Photos library. No cropping in post. No awkward re-shoots. No wasted time. Snap a photo and get the same dual-format treatment: one portrait, one landscape, both saved instantly. WHY CREATORS SWITCH TO ONEROLL Every creator faces the same problem: vertical platforms want 9:16, YouTube wants 16:9, and filming everything twice is not an option. OneRoll solves this at the source. One recording session produces both formats in full quality, so you can publish everywhere from a single shoot. RECORD IN CINEMA-GRADE QUALITY • 4K or 1080p resolution • 24, 30, 60, or 120 fps — from cinematic to slow-motion • MOV (best for editing) or MP4 (best for sharing) • Color profiles: Standard, LOG (for color grading), and Vivid BUILT-IN VIDEO FILTERS Apply filters while you record — no editing app needed: • B&W — timeless black and white • Vivid — punchy, saturated color for social media • Cinematic — moody, cool-toned film look • Cool — subtle blue shift • Warm — golden, sunset-toned warmth DUAL-FORMAT VIDEO + PHOTO • Record one video, get both 9:16 and 16:9 automatically • Take one photo, get portrait and landscape crops instantly • Choose your primary orientation (portrait or landscape gets full quality; the other is intelligently cropped) • Both files save directly to your Photos library — ready to upload PRO CAMERA TOOLS • Front and rear camera support • Pinch-to-zoom and precision zoom slider • Rule-of-thirds grid overlay • Torch/flashlight for low-light recording • Countdown timer: 3s, 5s, or 10s delay • Auto-stop timer: 15s, 30s, or 60s max recording length • Adjustable viewfinder overlay opacity BUILT FOR YOUR WORKFLOW Whether you are a TikTok creator, YouTube filmmaker, Instagram Reels producer, or someone who posts across every platform — OneRoll means you shoot once and distribute everywhere. No duplicate takes. No desktop cropping. No subscription-gated features. ONE PRICE. YOURS FOREVER. No subscription. No ads. No tracking. No account required. Pay once and every feature is unlocked permanently. Your recordings never leave your device. We collect zero data — not analytics, not usage stats, not anything. Requires iPhone XS or newer.
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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
Expo Camera
React Navigation
React Native Video
Expo Sharing
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.
