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.
CropSize is your go-to app for precise image resizing and editing
$5.99 · 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 CropSize: Image Resizer Editor: 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 export options for resized images
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Performance issues with large images
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Confusing user interface for new users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of advanced editing features
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.
CropSize is your go-to app for precise image resizing and editing. Make your photos the perfect size, composition, and quality for photo library, social media, and various projects. Enhance results with accurate color adjustments and properly crafted metadata. Automate the entire editing process with batch processing and workflows. Share and print your creations in the right format and dimensions. All these tasks are easily achievable with CropSize—an excellent addition to your photo editing toolkit! As an essential element of your editing arsenal, CropSize plays a distinctive role as it allows to specify exact sizes and positions for image crop and resize, where other apps offer only approximate solutions. It also provides detailed information throughout the editing process, making your experience more transparent and intuitive. Additionally, the app's ability to operate in various units of measurement can notably streamline your workflows. With these comprehensive features, CropSize ensures you have the control you need to achieve your editing goals: PHOTO CROP • Crop photos in Standard and Inverse Crop modes, using pixels, inches, centimeters, or percentages • Adjust the size and position of the crop frame using gestures or by entering values on the keyboard • Rotate images smoothly within a 0-360° range with a slider or specify rotation angle via keyboard (Long press slider) • Change the crop aspect ratio using customizable presets (Long press Ratio button) • Adjust the crop position and size by one pixel in correction mode (Tap a marker) • View crop-specific image details, including size, position, rotation, and estimated file size IMAGE RESIZE • Resize images in Stretch, Insert, Clip, and Canvas Size modes, using pixels, inches, centimeters, or percentages • Specify exact image size via the keyboard or customizable presets, up to 9000 x 9000 pixels (81 megapixels) • Resize proportionally with a percentage slider or specify the relative size via the keyboard (Long press slider) • Adjust position using gestures and one-pixel corrections for Insert, Clip, and Canvas Size modes • Preview changes in actual size • View resize-specific image details, including size, offset, and estimated file size PHOTO FILTER • Apply any combination of photo filters and effects, including Chrome, Bloom, Vignette, Sepia, Sharpen, Blur, and more • Adjust filter intensity using a slider or horizontal on-screen gestures • View changes Before / After using two-finger gestures BATCH PROCESSING & WORKFLOWS • Edit multiple photos simultaneously, applying the same combinations of crop, resize, color, orientation, and metadata changes to all of them • Use workflows by saving entire editing sessions as reusable Programs on the History screen, and accessing them from the Load screen • Edit up to 50 photos shared with CropSize from other apps or the Photo Library PHOTO METADATA • View image details on the Load and Metadata screen • Update photo DPI and creation date • Provide information and copyrights using up to 25 fields of IPTC metadata • Remove original GPS, EXIF, TIFF, and JFIF details from your photos • Create and manage multiple metadata profiles for better organization IMAGE ORIENTATION: • Flip and rotate images using one-finger swipe gestures on the Main and Batch Processing screen SHARE AND PRINT: • Choose export formats: Auto, PNG, TIFF, JPEG, and HEIC, with compression quality for JPEG and HEIC • Specify metadata settings using one of your previously created metadata profiles • Configure export filenames using original values, custom entries, or filename patterns • Save images to the Photo Library, automatically organizing Results and Originals into a convenient album structure • Print multiple photos on A4, Letter, and other page sizes using exclusive “Print Plus” option from sharing menu GUIDES • Explore our step-by-step guides: https://www.cropsize.com/guides • Watch the video overview of main features: https://vimeo.com/188002923
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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.