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
Yap! Reminders
Yap! works on the Apple Reminders and Calendar you already use — nothing to re-enter, no new system to learn
$3.99 · In-app purchases
PRICE
$3.99
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.
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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's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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.
// RORK SYSTEM PROMPT
Rork plan preview for Yap! Reminders: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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.
Hypothesis 1
Simplify the user interface and provide onboarding tutorials.
Assumption to check: Users often feel overwhelmed by too many options without clear guidance.
Validate with people who use this workflow before building.
Hypothesis 2
Implement categories or tags for reminders.
Assumption to check: Reminders can easily get lost if not organized properly.
Validate with people who use this workflow before building.
Hypothesis 3
Offer robust recurring reminder features.
Assumption to check: Lack of recurring reminder options in many apps.
Validate with people who use this workflow before building.
Hypothesis 4
Enable sync with external calendars like Google Calendar.
Assumption to check: Users want better integration with calendar apps.
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
Yap! works on the Apple Reminders and Calendar you already use — nothing to re-enter, no new system to learn. Anything due gets repeated, politely persistent alerts until you snooze it or mark it done: Yap! never gives up, and it never breaks through your Focus or Do Not Disturb. ONE SMALL PRICE, ONCE. No subscription, no ads, no account, no tracking — a rare thing these days. Ever miss one little reminder and lose the whole task? Yap! re-alerts as often as every minute, or as gently as you choose, until things actually get done. Done in Yap! means done in Apple Reminders, instantly. POLITELY PERSISTENT. Waiting yaps stay visible on your Lock Screen and Dynamic Island, and resume the moment your Focus lifts. Need one reminder to be LOUD? Mark it Urgent in Apple's Reminders app — Apple's Urgent alerts work alongside Yap!. • Works on your existing Apple Reminders & Calendar — your data never leaves your device • Snooze right from the notification: your presets, or type any duration ("45m", "2h", "1:30", "half an hour") • Live Activity shows what's waiting, even during Focus • Apple Watch too: snooze or finish a reminder from your wrist • Pick your yap sound — built-in or import your own • Pay once, own it forever: nothing renews, nothing recurs • No account, no tracking — nothing is collected, ever Built for ADHD brains and anyone whose reminders deserve a second bark.
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
React Native
Expo
Redux
Axios
React Navigation
Zustand
BUILD KIT DIFFICULTY
Advanced
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.
