Go

iOS commitment device. Charges me when I am late.

Live: https://go-place.vercel.app

What it does

Go reads my Google Calendar, computes a walking ETA from my current GPS to each event's geocoded address, sends a leave-now push, and uses a destination geofence to decide whether I arrived early enough.

If I miss the commitment, an off-session Stripe charge fires against my own card. Removing a payment method takes seven days. The anti-escape mechanism is the product.

The original working title was Class on Time; the product name is Go.

Core loop

1. Connect Google Calendar.
2. Detect events with physical locations.
3. Compute walking ETA and required departure time.
4. Send a leave-now push notification.
5. Use a destination geofence to decide whether the user arrived on time.
6. Charge the configured penalty if they did not.

What is built

• Expo iOS app with location, push notifications, onboarding, roll call, settings, and a route surface.
• Next.js server with App Router API routes on Vercel.
• Drizzle schema and migrations for users, events, arrivals, payment methods, charges, lockups, and integrations.
• Google Calendar sync and location-aware event detection.
• Stripe setup for Apple Pay / Financial Connections.
• Voice roll call: a Claude Haiku classifier listens to the user's plan and confirms or cancels commitments.
• Seven-day payment-method removal lockup so the user cannot escape the commitment at the last second.

Architecture

flowchart LR
  A["Google Calendar"] --> B["Next.js server"]
  C["Mobile GPS"] --> B
  B --> D["Mapbox walking ETA"]
  D --> E["Expo push"]
  F["Geofence arrival"] --> B
  B --> G["Stripe penalty"]
  B --> H["Postgres / Drizzle"]

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Stack

Expo, Next.js 16, TypeScript, Neon Postgres, Drizzle, Mapbox, Stripe Financial Connections, Google Calendar, Whisper, Claude Haiku, Vercel, and GitHub Actions cron.

Repo layout

• apps/mobile - Expo iOS app
• apps/server - Next.js server, API routes, Vercel cron, Stripe, Google Calendar
• packages/db - Drizzle schema and migrations
• packages/shared - Shared TypeScript types

Status

Private alpha. Marketing site is live; iOS app runs in an EAS dev client.

Run locally

npm install
npm run dev:server
npm run dev:mobile

Environment variables live in apps/server/.env.local and apps/mobile/.env.local.