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
Video Rotate & Flip - HD
With Video Rotate & Flip - HD, you can now rotate and flip your videos in a very easy way, directly on your device.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
191 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 Video Rotate & Flip - HD: 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
Expand editing capabilities to include trimming, effects, and audio adjustments.
Assumption to check: Limited editing features compared to full-fledged editors
Validate with people who use this workflow before building.
Hypothesis 2
Optimize video processing to handle larger files more efficiently.
Assumption to check: Performance issues with large video files
Validate with people who use this workflow before building.
Hypothesis 3
Implement cloud storage options for saving edited videos.
Assumption to check: Lack of cloud backup options for edited videos
Validate with people who use this workflow before building.
Hypothesis 4
Add support for various video formats and resolutions.
Assumption to check: Limited export formats available
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
With Video Rotate & Flip - HD, you can now rotate and flip your videos in a very easy way, directly on your device. Rotate your videos to change the portrait/landscape orientation, or flip them to turn the image upside down. Here are some different usages of Video Rotate & Flip : • you recorded a video with a bad orientation because you forgot to remove the rotation lock of your device. Use Video Rotate & Flip to change the orientation. • you took a video of the ground or the sky. The orientation choosen by the device is not optimal and you want to change it. • you want to add a mirror effect, flipping the video horizontally, in order to make things impossible to read. • you just want to add some funny effect to a video, turning it upside down, or rotating it. • some video players on your computer does not rotate the video correctly. Use Video Rotate & Flip to fix the video and apply the orientation. If the video is still not readable on your computer, your video player might not fully support the .mov file extension. Use Quicktime (http://www.apple.com/quicktime/download/) instead. The Input video can be imported from your device in several ways. The modified version (if there is one) or the original version of the video are both available. The camera can be used directly to record a video if needed. You can also connect your device to your computer in order to drag and drop specific videos (Files feature). The output video can be exported in several ways. Create a new video in the Photo app or in the Files app. Directly modify the input video by adding an edited version. Share the video to another application. This application can run, on your iPhone and your iPad, as a standalone application, a Photo Extension, or as an Action Extension (from the compatible applications like the Photo app). Portrait and Landscape orientations are supported in all screens. Dark mode of iOS13 is supported. You will find the original and intuitive user interface, common to all our videos applications. These applications have been featured many times by Apple and various websites.
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
Zustand
expo-video
react-navigation
expo-sharing
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.
