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
EverBuoy
Keep the dates that matter close.
$4.99
PRICE
$4.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
2 ratings · Top 5%
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
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.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
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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.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Keep the dates that matter close. EverBuoy helps you remember birthdays, anniversaries, and personal milestones in one colorful, easy-to-browse place. See what is coming, set reminders, and turn a special date into a thoughtful greeting. REMEMBER YOUR IMPORTANT DATES • Save birthdays with or without a birth year • See the upcoming age when a birth year is known • Track anniversaries, one-time events, and time since a special day • Browse upcoming dates in a list or monthly calendar • Search names and notes, mark favorites, and filter your entries MAKE TIME TO PREPARE Add multiple reminders to each entry, with your choice of advance notice and time of day. Notifications are scheduled on your device after you grant permission. MAKE IT PERSONAL Choose playful icons and ten card colors. Use light or dark mode, or follow your iPhone's appearance. SHARE A THOUGHTFUL GREETING Create a birthday or special-date greeting as text or an image. Choose a message style, edit the wording, and decide whether to include an age, milestone, or exact date. Your entry notes stay out of greetings unless you choose to include them. KEEP YOUR DATES WITH YOU Use EverBuoy offline without creating a separate account. When you are signed in to iCloud, entries and reminder settings sync through your private iCloud database. Export a JSON backup to restore your entries, or a CSV file for your own records. For birthdays that follow the Chinese lunar calendar, an optional calendar setting is also available. EverBuoy has no ads or third-party analytics SDKs. Available in English, Simplified Chinese, and Traditional Chinese.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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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
BUILD KIT DIFFICULTY
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.
