What stack is Vesper Sky built on?

The app is built in React Native with Expo and deployed via EAS on both platforms. WeatherKit provides forecast and nowcast data. The marketing site at vespersky.ai is a Next.js site deployed via SST v3 and includes an AI concierge connected to the Apex Concierge infrastructure used across the iSM network.

How does Vesper Sky handle subscriptions?

RevenueCat manages in-app purchases on both platforms. A 2.99 dollar per month subscription with a three-day trial is live on iOS and Android. Annual subscription is pending a new base plan on Android, and the lifetime IAP is pending merchant verification. The monthly subscription is already active in the App Store.

What is the Apple Watch experience?

The app includes seven Apple Watch complications and a Today view that surfaces the Brief at a glance. Complications are a first-class target of the editorial voice, not an afterthought. The Brief is designed to be meaningful at watch-face length. Android watch complications are post-launch work rather than day-one scope.

Why editorial instead of icon grids?

Standard weather apps answer what the temperature is, when most people need to know what to wear and whether their plans will hold. Icon grids require interpretation and raw numbers require mental translation. An editorial brief is the judgment a knowledgeable person would offer if you asked them what the weather means today.

Vesper Sky

Abstract

Vesper Sky is an editorial weather app for iOS and Android that presents atmospheric conditions through a distinctive written voice — the Brief — rather than icon-and-number grids. The app covers today's forecast, nowcast, trajectory, sky conditions, and an Apple Watch companion.

Problem

Weather apps solve the wrong problem. They answer "what is the temperature?" when most people need "what should I wear, and will my plans hold?"

Standard icon grids require interpretation; raw numbers require mental translation. The result is a category of apps that are technically accurate but practically unhelpful for decisions.

An editorial weather app treats atmospheric data as raw material for a short, readable brief — the kind of judgment a knowledgeable person would offer if you asked them what the weather means today.

Approach

Mobile stack

The app is built in React Native with Expo, deployed via EAS on both platforms. WeatherKit provides forecast and nowcast data; the app processes atmospheric signals into the Brief using a structured generation pipeline.

Marketing and commerce

The marketing site (vespersky.ai) is a Next.js site deployed via SST v3 with full Vesper Sky branding, real device screenshots, and an AI concierge connected to the Apex Concierge infrastructure.

RevenueCat manages in-app purchases on both platforms: a $2.99/month subscription with a 3-day trial is live on iOS and Android. The Android internal track is live; production rollout follows standard testing and screenshot capture on real hardware.

Companion surfaces

The app includes seven Apple Watch complications and a Today view. Android watch complications are post-launch work.

Status

iOS: App Store approved (Build 5). Monthly subscription active.
Android: Internal track live (1.0.0, versionCode 2). Annual subscription pending a new base plan; lifetime IAP pending merchant verification.
Marketing site rebuilt around real device screenshots (iPhone 17 Pro, iPad, Apple Watch), fully rebranded to Vesper Sky.
DynamoDB tenant, S3 knowledge/persona, and Apex concierge all renamed from getvesper → vespersky.

Vesper Sky

What is Vesper Sky?