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
WristMail for Gmail
WristMail lets you quickly access your Gmail emails from your Apple Watch, iPhone, & iPad.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.9
722 ratings · Top 50%
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 included18 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.
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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 WristMail for Gmail: 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
Integrate more features like labels, search, and advanced filtering.
Assumption to check: Limited functionality for managing emails compared to full Gmail app
Validate with people who use this workflow before building.
Hypothesis 2
Improve notification settings for better user control.
Assumption to check: Inconsistent notification handling
Validate with people who use this workflow before building.
Hypothesis 3
Add themes and layout preferences.
Assumption to check: Lack of customization options for email layout
Validate with people who use this workflow before building.
Hypothesis 4
Optimize loading and rendering of emails.
Assumption to check: Occasional performance issues with large inboxes
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
WristMail lets you quickly access your Gmail emails from your Apple Watch, iPhone, & iPad. **How It Works** 1. Sync your Gmail account to Apple Watch via iPhone 2. Watch the magic happen - literally Setting up WristMail requires you to have a valid Gmail account. The app signs users in via the official platform thus ensuring all credentials and information is safe and secure. - Send and Receive emails! - Supports dictation and scribble on watch - Easily view new emails (unread vs. read) on watch - Support for multiple folders - Complication Support (watch) - View Sender, Subject, Time Received - Refresh email list - Full iOS Support - Dark mode support - Sign out with ease - View contacts - QWERTY keyboard support (watch) - Full HTML and Plain email support on iOS - Tap into emails to view + image support PRIVACY: We take privacy and security very seriously. This is why we do not save any of your emails or information on a server. Users are required to sign in to their Gmail accounts directly through Google Sign In to ensure 1 to 1 security between your account and your device - period. When you are waiting for that important email, it is super useful to glance at your wrist and know when it comes. For feedback and support please contact us by tapping the contact icon in the iOS app. This is a very new app and we look forward to continuously improving it and adding features. NOTE: This is a third party application that is not affiliated or endorsed by Gmail or Google Inc. The application uses the official APIs and Platform, thus is compliant with all Terms and Policies.
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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
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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.
