Listen to Ketones, The Fourth Fuel: Warburg to Krebs to Veech, the 250 Year Journey to Find the Fountain of Youth by Travis Christofferson

Lightening Trip

I'm impressed by ListenBook's commitment to providing a silky-smooth playback experience. This app's support for various formats and genres ensures that there's always something new to explore. Playback speed and volume controls are top-notch. Highly recommend. The app is perfect for people with busy schedules. I can listen on the go.

HOV

This app's support for various formats ensures that I can enjoy my audiobooks without any limitations. Good for background listening. I didn’t get fully immersed, but it was pleasant enough to have on while doing chores. The narrator’s voice was easy to listen to, even if the delivery lacked some energy.

Acetic Princess

🧘‍♂️ Finding zen through storytelling – this app makes meditation even more calming. 🧘‍♂️🎧 ListenBook has completely changed how I enjoy audiobooks. The app is packed with features like customizable skip intervals, playback speed, and sleep timers. The interface is clean and easy to navigate. Five stars!

Armed Hawk

ListenBook's dedication to excellence shines through in its performance and features. I can't get enough of the binaural audio processing. It's like a breath of fresh air for my ears. ListenBook Pro takes things up a notch with unlimited audiobook length. It's a game-changer! Sharing audiobooks with friends through AirDrop is a delightful feature. Sharing is caring! Love the silky-smooth playback and easy-to-use interface. ListenBook is the best!

Rosie Bird

I can't imagine my audiobook routine without ListenBook's seamless audio player. The fact that ListenBook doesn't just play, but enhances audio quality, is truly remarkable. Effortlessly exploring audiobook worlds – this app's functionality is genius. is a breeze with ListenBook. It's convenient and reliable.

The Flying Mouse

I can't thank this app enough for making my audiobook experience so effortless. From downloading to playback, it's a true companion for book lovers. 📚💫 The ability to adjust playback speed is a fantastic study aid. I'm absorbing information faster than ever. The automatic extraction of artwork and metadata adds a professional touch to my audiobook collection. I can't get enough of the app's sleek interface and intuitive controls. It's a joy to use! Adjusting the tone of the voice is a unique feature that adds a personalized touch to the listening experience.