Whistle

What is Whistle?

Whistle is an AI-powered training app that builds personalized plans, adapts to your body, and coaches you through training. Built for iPhone and Apple Watch, it brings your workouts, recovery and weather together so your plan can change with your week.

Quick Facts

App	Whistle: AI Workout Planner
Developer	Vogelhaus Apps GmbH
Platforms	iPhone, iPad and Apple Watch
Requirements	iOS 18+, iPadOS 18+, watchOS 11+
Category	Health & Fitness
Pricing	Free with optional Pro and Ultra in-app purchases. See the App Store for current regional pricing.
Website	vogel.haus/whistle
App Store	Download Whistle

The Problem Whistle Solves

Most training plans don't know you slept badly, that a storm is coming on Thursday, or that your training load has been creeping up for three weeks.

Whistle treats training as a dynamic process. It brings the signals your body is already producing into your planning, helping you decide when to push, adapt or recover.

Key Features

AI Coach

Ask Whistle to plan your week, adjust a workout, review your progress, or explain what your training data means. The coach works conversationally with your goals, schedule and available health data.

Flexible Training Plans

Create structured sessions and longer training programs. Browse ready-made workouts, save templates, or share a workout with a training buddy.

Health, Weather and Watch

Whistle uses Apple Health data, including sleep, recovery and activity, when you grant access. Weather forecasts and warnings add context for outdoor sessions. Send planned workouts to Apple Watch and start them from your wrist.

Training Insights

Review training load, projected load, workout estimates and trends alongside your completed sessions.

Privacy

No account is required. Workout and health data stay on your device and in your personal iCloud where possible. When you choose AI coaching, the data needed for the request may be processed temporarily to generate a response. Optional Product Insights can be turned off in the app. See the Whistle Privacy Policy for the current details.

About Vogelhaus

Whistle is made by Florian and Clemens, two friends from Vienna who build software they would want to use themselves. Vogelhaus Apps is an independent studio with no investors or growth targets.

Contact

Thank you for taking the time to write about Whistle. For questions, interviews or additional assets, contact contact@vogel.haus.