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.
#1 must-have app for quickly and easily adding scrolling credits like you see in professional movies and TV shows to the beginning or ending of your videos
$4.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Scrolling Credits Pro: 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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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
Assumption to check: Limited customization options for text and animations.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Watermark on free version can be annoying.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of cloud backup for projects.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Performance issues with large projects.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
#1 must-have app for quickly and easily adding scrolling credits like you see in professional movies and TV shows to the beginning or ending of your videos. Also great for adding scrolling text to TikTok, Instagram, documentaries, sales, Facebook ads, and informational videos. CHECK OUT THESE PRO FEATURES: • Designed specifically to do scrolling credits! • Powerful, yet super easy to use--no learning curve! • Scroll credits over a flat background image or even video footage! • Supports one or two-column credits, just like the pros! • Easily add Headings to sections of credits! • Control font style, size, color, and scrolling speed! • Supports multiple SD/HD resolutions, including: SD 360p, HD 720p, HD 1080p and even Ultra HD 4K! • Supports multiple Aspect Ratios, including: 1:1, 4:3, 16:9 (landscape), 9:16 (portrait), and 2:1 (18:9). • Great for TikTok, Instagram or Facebook videos by using the 1:1 (square) or 9:16 (portrait) Aspect Ratios! • Smooth, non-jerky scrolling! • Includes dozens of HD backgrounds to choose from or upload your own! • Includes several "seamless" video loops (fire burning, flag waving, etc.) for motion-rich credits, or upload your own video footage! • Chroma Key "green screen" support! • Save and manage "projects," no need to start over to make a change! • Supports ALL devices (all sized iPhones and iPads)! ___________________________________________ HOW IT WORKS... 1. Choose from the dozens of backgrounds provided by the app (a solid color, a gradient color, an image, a "seamless" video loop, or a "green-screen" chroma key), or upload your own background image or video. 2. Enter the text you want to have scroll over the background you've selected. You can even use headings or two columns for your credits, just like the pros. 3. Preview what your scrolling credits will look like, adjusting the scrolling speed, aspect ratio, and the font style, color, and size. 4. When you're happy with how everything looks, the app will render and save an HD video clip to your device's Photo Library (Camera Roll). 5. Optionally, you can use iMovie or other video editing software, import the credits video clip, and drag it to where you want it to play in your movie (such as at the end for closing credits). ___________________________________________ Here are all the sizes supported for each of the different aspect ratios: ====== 1:1 ====== SD 360p (360 x 360) HD 720p (720 x 720) HD 1080p (1080 x 1080) Ultra HD 4K (2160 x 2160) ====== 4:3 ====== SD 360p (480 x 360) HD 720p (960 x 720) HD 1080p (1440 x 1080) Ultra HD 4K (2880 x 2160) ====== 16:9 (landscape) ====== SD 360p (640 x 360) HD 720p (1280 x 720) HD 1080p (1920 x 1080) Ultra HD 4K (3840 x 2160) ====== 9:16 (portrait) ====== SD 360p (360 x 640) HD 720p (720 x 1280) HD 1080p (1080 x 1920) Ultra HD 4K (2160 x 3840) ====== 2:1 (18:9) ====== SD 360p (720 x 360) HD 720p (1440 x 720) HD 1080p (2160 x 1080) Ultra HD 4K (4320 x 2160) ___________________________________________ Need help? Watch the included tutorial video and sample projects. (For the tutorial, pull down the Menu from the home page of app or visit scrollingcredits.com.) Still need help? Email us at [email protected]!
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.