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.
Image to Base64 is a flexible and easy-to-use Base64 image encoder
$2.99 · 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 Image to Base64 Plus: map the core Developer Tools 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 image formats supported
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No sharing functionality
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No cloud storage option
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No preview of the uploaded image
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.
Image to Base64 is a flexible and easy-to-use Base64 image encoder. It allows you to convert an image to Base64 or decode a Base64 string back into an image effortlessly. Features: ∙ Convert images to Base64 with ease. ∙ Copy the Base64-encoded string for use in other applications. ∙ Convert Base64 strings back into images effortlessly. ∙ Save the converted image directly to your camera roll. ∙ Works seamlessly on both iPhone and iPad. ∙ Lightweight, compact app optimized for everyday use. ∙ Ad-free and built with privacy in mind. About Base64 Base64 encoding is used to embed image data in formats such as HTML, CSS, and JSON. Since the image is included directly in the content, the browser does not need to make a separate request to fetch the file. However, Base64-encoded images are larger than standalone image files, and for large images, the encoded string can be quite long. It is recommended to use Base64 primarily for small images and compare the performance of embedded vs. external images. Base64 encoding generates characters from a set that includes Latin letters, numerals, plus, and slash. It is widely used in Multipurpose Internet Mail Extensions (MIME) for email transport encoding. Why Use Base64 Encoding? Base64-encoded images can be embedded in img tags or CSS, reducing load times for small images by eliminating additional HTTP requests. This technique is useful for: Creating single-file mockups or demo HTML pages. Embedding images in HTML email signatures to avoid "display images" warnings. How to Convert an Image to Base64: 1. Tap Image to Base64. 2. Select the photo you want to convert. 3. Tap the Convert button. 4. The Base64 string is generated instantly. 5. Copy the Base64/HTML/CSS code by pressing the copy button. How to Convert Base64 to an Image: 1. Tap Base64 to Image. 2. Paste the Base64 code into the text field. 3. Tap the Convert button. 4. If the code is valid, an image preview will appear. 5. Save the image to your camera roll. The Base64 string is generated directly on your device using the Base64 algorithm—no data is sent to a server for conversion. Thank you for your support! Visit nitrio.com for more apps for your iOS devices.
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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.