Skill

app-dev

Comprehensive application development lifecycle skill for Maycrest Group's Expo + Supabase + Stripe stack. Covers client app builds (booking apps, business tools) AND internal platform development (TIE - Threat Intelligence Engine). Triggers on mobile app development, React Native, Expo, Supabase, booking app, SaaS platform, multi-tenant, white-label app, app store submission, NativeWind, payment integration, Stripe Connect, client handoff, app maintenance agreement, TIE platform, threat modeling SaaS, cybersecurity dashboard, RBAC, RLS policies, UI/UX design system, app pricing, SOW creation, discovery sprint, EAS build, OTA updates, push notifications. Also use when the user mentions anything about building apps for small businesses, designing beautiful interfaces, creating design systems, or planning app architecture.

Install

npx claudepluginhub coreymaypray/sloth-skill-tree

Tool Access

This skill uses the workspace's default tool permissions.

Preview

Full application development lifecycle for Maycrest Group. Covers two tracks:

SKILL.md

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Last CommitMar 21, 2026

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Maycrest App Development

Overview

Full application development lifecycle for Maycrest Group. Covers two tracks:

Client Apps — Booking apps, business tools, and custom mobile apps for SMB clients
Internal Platform — TIE (Threat Intelligence Engine) SaaS platform

Tech Stack

Layer	Technology
Frontend	Expo (React Native) + NativeWind
Backend	Supabase (Postgres, Auth, Edge Functions, Realtime)
Payments	Stripe / Stripe Connect
Build/Deploy	EAS Build, EAS Submit, OTA Updates
Auth	Supabase Auth + Sign in with Apple + Google
Push	Expo Push Notifications + APNs
State	Zustand or React Context
Navigation	Expo Router (file-based)

Development Phases

Phase 1: Discovery Sprint (1-2 weeks)

Requirements gathering
User stories and flows
Database schema design
Architecture decisions
SOW creation and pricing

Phase 2: Foundation (1-2 weeks)

Expo project scaffold with NativeWind
Supabase project setup (auth, database, storage)
Navigation structure
Design system tokens (colors, typography, spacing)
Core component library

Phase 3: Feature Build (2-4 weeks)

Screen-by-screen implementation
API integration (Edge Functions)
Payment flow (Stripe)
Push notifications
Real-time features (Supabase Realtime)

Phase 4: Polish & QA (1 week)

UI/UX polish pass
Performance optimization
Error handling and edge cases
Accessibility review
Device testing matrix

Phase 5: Launch (1 week)

EAS Build (iOS + Android)
App Store / Play Store submission
Client handoff documentation
Maintenance agreement setup

Design System

Principles

Mobile-first, thumb-friendly
Dark mode as default, light mode available
Consistent spacing scale (4, 8, 12, 16, 24, 32, 48)
Maximum 2 font families
Accessible contrast ratios (WCAG AA minimum)

Component Library

Buttons (primary, secondary, ghost, destructive)
Cards (content, stat, action)
Inputs (text, select, date, toggle)
Navigation (tab bar, header, drawer)
Modals (bottom sheet, center, full screen)
Lists (flat, sectioned, swipeable)
Loading states (skeleton, spinner, progress)

Architecture Patterns

Multi-Tenant (TIE Platform)

Organization-scoped data with RLS
Role-based access (admin, analyst, viewer)
Tenant isolation at database level
Shared infrastructure, isolated data

Client Apps

Single-tenant per deployment
White-label ready (theme tokens, branding config)
Offline-first where applicable
Deep linking support

Pricing Model

Client App Builds

Discovery Sprint: $2,500 - $5,000
MVP Build: $8,000 - $15,000
Full Build: $15,000 - $35,000
Monthly Maintenance: $500 - $2,000/month

SOW Template Structure

Project Overview
Scope of Work (in/out of scope)
Deliverables
Timeline & Milestones
Investment & Payment Schedule
Maintenance & Support Terms
Assumptions & Dependencies

Rules

Always start with a discovery sprint before quoting
Use Expo Router file-based routing (never React Navigation directly)
NativeWind for all styling (never inline StyleSheet unless necessary)
Supabase RLS on every table, no exceptions
TypeScript strict mode
Environment variables via EAS secrets
Never store secrets in code or git
Test on both iOS and Android before any client demo