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.
Learn Spanish verbs
$2.99
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.
Your first Build Kit is free with a verified email.
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 Conjugation Nation Spanish: map the core Education 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 verb coverage compared to other resources
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No interactive features or community aspects
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Static lesson formats can become monotonous
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of personalized learning paths
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.
Learn Spanish verbs. Practice conjugating verbs with an interactive, fun and addictive quiz. We give you a verb, tense, and pronoun - you give the correctly conjugated verb. Quizzes are available in sets of 10, 25, and 50 questions. Customize your quiz. Select from a list of 501 verbs, 13 tenses, and 6 pronouns. That's almost 40,000 conjugations! ====Features==== (Click on the support link to request features in our user forum! http://conjugationnation.uservoice.com/) Customize your quiz: -Select from a list of 115 verbs, create and save custom lists, or select by verb stem. -Select tenses (beginners can start with just Presente). -Select pronouns (work with all of them, or select a subset - e.g. Yo, Tu). Learn new words: -Full Verb Reference -While taking the quiz, TAP the screen to show English translations. -If you're stumped, you can SWIPE UP to view the answer, and then also view all conjugations if desired. -Adjust the quiz pace, slow it down by adjusting Answer Display Duration under the options panel. -Review the summary to go over incorrect answers. -Review the verb conjugation tables to brush up. -View the regular stem reference to learn about conjugation patterns for regular verbs. Personal Top Scores: -Go for speed and try to conjugate in record time. =============================== Also check out Conjugation Nation Italian and Conjugation Nation French in the app store!! *Working knowledge of the language is recommended. Our app does not provide Spanish grammar rules. However, the app can be a powerful memorization tool if you are just beginning to study the language. ===IMPORTANT=== If using auto-correct, we recommend enabling the iPhone's built-in Spanish keyboard. Enable it under: Settings -> General -> Keyboard -> International Keyboards. ===============================
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.
Not assessed in a Build Kit yet.
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.