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
DOI Finder: Paper Search
DOI Finder is your essential companion for scientific literature research
$1.49 · In-app purchases
PRICE
$1.49
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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.
JavaScript is required to complete mailbox verification.
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 DOI Finder: Paper Search: map the core Reference workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Implement broader search capabilities and alternative queries.
Assumption to check: Limited search functionality, often misses results
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to cache recent searches for offline access.
Assumption to check: No offline access to previously searched papers
Validate with people who use this workflow before building.
Hypothesis 3
Enhance UI with themes and user preferences.
Assumption to check: Basic user interface lacks customizability
Validate with people who use this workflow before building.
Hypothesis 4
Provide clearer descriptions of premium features and benefits.
Assumption to check: In-app purchases are not clearly explained
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
DOI Finder is your essential companion for scientific literature research. Whether you are a researcher, professor, PhD student, or undergraduate working on your thesis - find the articles you need in seconds. ◆ Powerful Search Across Multiple Databases Search over 150 million scholarly articles from three major scientific databases simultaneously: • CrossRef: The largest database for journal articles and publications • DataCite: Research data, dissertations, and software • Europe PMC / PubMed: Biomedical and life science literature Enter a DOI, search by title, author, or keyword - DOI Finder delivers comprehensive results from all sources in one unified interface. ◆ Instant Access to Open Access Content Stop hitting paywalls. DOI Finder automatically checks for freely available versions of articles through Unpaywall integration. When an Open Access version exists, you get direct access to the full PDF - legally and for free. ◆ Complete Article Information Get all the metadata you need at a glance: • Title, authors, and publication date • Journal and publisher information • Abstract and keywords • Citation count • Direct links to the original source • ORCID profiles of authors ◆ Organize Your Research Build your personal library with favorites and collections. Create custom collections to organize articles by topic, project, or any system that works for you. Your research stays organized and accessible. ◆ Seamless Sync Across Devices With iCloud synchronization, your favorites, collections, and search history are available on all your Apple devices. Start researching on your iPhone and continue on your iPad. ◆ Key Features • Search by DOI, title, author, or keyword • Access three major scientific databases • Find Open Access versions automatically • Save favorites and create collections • View complete article metadata • Track your search history • iCloud sync across devices • Clean, intuitive interface • Works offline with saved articles • Available in English, German, French, and Spanish ◆ Who Is DOI Finder For? • Researchers and scientists • University professors and lecturers • PhD candidates and doctoral students • Master and bachelor students • Medical professionals • Librarians and information specialists • Science journalists • Anyone working with academic literature ◆ Why DOI Finder? Traditional database interfaces are often cluttered and difficult to use on mobile devices. DOI Finder brings the power of scientific literature search to your pocket with a clean, modern interface designed specifically for iOS. No account required. No subscription needed. Just open the app and start finding the papers you need. Download DOI Finder today and make scientific literature research effortless.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
Supabase
Axios
React Navigation
TypeScript
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.
