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.
Welcome to Tumblr, your ultimate creative space and art social network community for art, memes, and fandoms
Free · 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 Tumblr: Social Media & Art: map the core Social Networking 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: Content moderation is often lacking or inconsistent.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User engagement can drop due to overwhelming content.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchase features can be confusing to navigate.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Performance issues with loading heavy media.
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.
Welcome to Tumblr, your ultimate creative space and art social network community for art, memes, and fandoms. Whether you're deep into a niche or just discovering your artistic side, Tumblr welcomes every voice and vision. It’s where creativity, community, and self-expression come together in one powerful social networking platform. Share your work, connect with fans, and explore endless opportunities to post your art in a supportive art community. Use Tumblr to share art, write an art blog, discover new fandoms, and explore your interests without limits. We function as a powerful blog making app for all your long- and short-form creations. Post images, text, videos, GIFs, and even audio to your own personalized dashboard. Follow topics you love, reblog content that inspires you, and build your own art community of fans and friends. Post your art alongside like-minded creators, whether you’re into illustrations, photography, or fanart. Tumblr is your creative playground. Whether you’re into digital art, fanfiction, cosplay, or simply love funny memes, you’ll find others who get it. Express yourself with GIFs, memes, fanart, and tutorials, and join authentic conversations with others who share your passions across countless fandoms. Think of this as your space to be real, hang out, and create openly, among the top social media apps for creativity. Our social media platform supports original content creation, art blogs, and fan communities. Use tags to reach new audiences and curate your personal feed. Whether you're writing original stories, sharing digital art, or posting your latest fan creations, your dashboard is where it all comes together. Post your art with ease and connect with people who share your interests in an engaged art community that supports your creativity. Explore trending tags, join creative challenges, or browse through curated art collections and fan edits. Discover the latest in K-pop, anime, Marvel, DC, gaming, and TV show fandoms. Tumblr thrives on vibrant spaces, giving you access to a world of niche interests and major trends. We are one of the essential social media apps for finding creative communities. You can even follow your favorite fic writers from AO3 (Archive of Our Own), see their OC art, and share your passions in conversations about your favorite fanfiction universes. Start your own webcomic, showcase your fan creations, or simply enjoy scrolling through an endless stream of content. With tools for reblogging, liking, and sharing, you’re never far from discovering something amazing. Join the community where you can hang out, reblog iconic moments, engage in fan theories, or just scroll for inspiration. Be real and express your unique style while being yourself in creative communities across a global art network. Customize your experience with our intuitive tools and privacy settings. Create multiple blogs, go private, or make a name for yourself in the digital art and fanart world. Whether you’re here to share your voice, find your people, or simply enjoy the internet the way it used to be, Tumblr is your space to do it all. Post your art or write your next art blog, and discover a community where everyone can be real. Download Tumblr now and become part of a global creative social media community. From art sharing apps and fandom hubs to social creativity tools and online self-expression, this is your space to belong. Explore creative discussions, connect with an art community, and make it your own. Twitter: https://twitter.com/tumblr/ Instagram: https://www.instagram.com/tumblr/ Terms of Service: https://www.tumblr.com/policy/terms-of-service
Written user reviews are not shown here. Check current App Store reviews >
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.