# Finish Your AI-Built App | Free 15-Minute Fit Call with Joseph Kim

> For US nontechnical founders with an existing Lovable, Replit or Base44 app that they cannot finish. In this free 15-minute call, show Joseph your app or preview and the main blocker. We confirm your intended outcome, platform access, timing and budget. You do not need to diagnose the code. Do not send passwords or private credentials. If the project fits, the next step is a US$250 launch review: up to two hours inspecting the build, written findings and a scoped recommendation within two business days after payment and access are confirmed. The review does not include implementation. When the reviewed scope fits, the App Completion Sprint is US$3,500 total, including the US$250 review credit: US$250 review, US$1,500 kickoff and US$1,750 on agreed acceptance. Implementation takes ten business days after scope approval, kickoff and prerequisites are ready. Larger work is quoted separately. Platform subscriptions, hosting, API usage and other third-party costs remain yours. Work directly with Joseph Kim, based in South Korea. Choose an available time in your own timezone. The call is free, no payment is taken when booking and there is no obligation to buy a review or sprint.

- Host: Joseph Kim
- Duration: 15 min
- Location: Google Meet
- Host time zone: Asia/Seoul
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/10xblitz/finish-your-app
- Event type id: 7580458

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7580458&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 7580458,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…",
    "completionBudget": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `notes` (App link, tool, main blocker and target launch date), `completionBudget` (Available completion budget (USD))
- Optional fields: `guests` (Add guests)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.