MasterClass On Call
Practice, prepare, and perform when it matters most. On Call helps you get ready for high-stakes conversations with real-time roleplays, instant feedback, and coaching powered by the AI of the world’s best. Talk or text anytime, on your terms and without judgment. Build skills and confidence through practice, not pressure. One rep at a time.
Key features
Practice real-world conversations
Roleplay important conversations with custom AI partners tailored to your real-life situations, from negotiations to giving feedback and resolving conflict.
Improve with real-time feedback
Get instant, actionable feedback after every roleplay. Sharpen your delivery and clarity with insights designed to help you grow with every rep.
AI coaching from the world’s best
Get personalized coaching from AI built in partnership with world-class experts like Chris Voss and Mark Cuban. Reflect, debrief, and grow with coaching grounded in lived experience, not surface-level advice.
Conversations that feel natural
On Call listens like a trusted peer and challenges you when it counts. Whether you want a quick gut check or a deep dive, it’s a supportive place to think out loud and refine your approach.
Private and judgment-free
Practice tough conversations without fear of judgment or pressure — a low-stakes space where you can try, stumble, refine, and build real confidence at your own pace.
Subscription required: Roleplaying and coaching from the AI of the world's best is only available with a subscription. Subscription details, including pricing and terms, are displayed within the app or website.
Download now and take your personal and professional growth to the next level.
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I love the concept. I paid for the subscription in the hopes of getting Bill Nye to help with some problem solving concepts but it’s been almost a year now that it’s “Coming Soon”. Hopefully it will released soon. Will keep the app but cancel my subscription for now. As it stands it seems to work well at least with Voss that I’ve tested.
Feels Too Real
Dperdu2
It’s scary how real the AI feels. I am a few months into a start up and have been using ChatGPT as a resource, which has been great, but On Call has been amazing for the business questions that involve human interaction, negotiation, and strategy. It feels like Mark Cuban is a mentor who actually has compassion for you as a person. There’s support and encouragement, and when correction needs to be made there’s validation and an explanation of why you should use a different approach. I’ll often ask the exact same question to Cuban and Voss, and while the answers don’t usually contradict each other, they come from different angles that give you better perspective. It’s also really cool how Cuban will sometimes compare his life experiences to what you are going through and he’ll explain what he did in the situation. The sleep guy, I’ve never heard of him before, he’s kind of boring, but I’ve learned some things. Over all, this is well worth the money and I can’t wait for some of the others to roll out.
Lifelike and helpful
David, lover of fine whiskey
I’ve been skeptical of a lot of AI chatbots, but these are authorized and specialized, representing experts who have approved, so it’s really the next best thing to chatting with Gordon Ramsay or Chris Voss. I find myself going to Gordon all the time for recipe recommendations or just to see how to use up ingredients in my fridge. Great product and I’m looking forward to who they release next!
I’ve been needing this
Birdwatcher00
I was doubtful…. But now it’s part of my daily routine. The coaches are surprisingly real, human. Really helpful to be able to verbalize my thoughts and problems and have Mark Cuban shoot it back. Excited for new coaches soon. And roleplay feature was helpful for some meetings recently. The future gonna be wild!
This update includes critical bug fixes and performance enhancements to improve stability and speed.
Version 1.24.0
The developer, MasterClass, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Purchases
Contact Info
User Content
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
