Kevin Hart’s HartBeat Ventures Leads $35M Series B for AI-Powered Weight Loss App Simple
Mike Prytkov, founder of the health coaching app Simple, understands firsthand the challenges of managing stress and weight amid a demanding lifestyle. After exiting his adtech startup Appness, Prytkov struggled with maintaining consistent weight loss despite trying extreme workouts, calorie tracking, and fasting. Motivated by his experience, Prytkov launched Simple in 2019, an AI-driven app designed to provide personalized health coaching that keeps users accountable and motivated without the guilt often associated with traditional dieting.
AI Coach Avo Enhances Personalized Weight Loss Experience
In 2023, Simple introduced Avo, an AI coach that offers tailored advice based on individual user data and progress. Avo manages over 100,000 coaching conversations daily and processes nearly 300,000 meal logs, enabling a highly personalized approach to weight management. Users begin by completing a detailed intake form to build a customized program. Avo then collects ongoing user input such as meal logs and habit assessments, delivering adaptive coaching through chat powered by large language models (LLMs) that adjust tone and content to each individual’s preferences and long-term health context.
“The coaching is delivered through a chat powered by LLMs that adapt tone and content to each person, with memory for long-term context and constitution-based fine-tuning,” Prytkov explained.
Positioning in a Competitive Weight Loss Market
Simple competes directly with established apps like Noom, WeightWatchers, and MyFitnessPal. However, Prytkov distinguishes Simple by emphasizing personalized coaching rather than generic calorie tracking or lessons. Unlike some competitors, Simple has not ventured into offering GLP-1 medications but complements users who utilize such treatments by sustaining healthy behaviors. Simple’s AI-driven approach adapts daily plans across nutrition, fasting, movement, and habits, providing real-time meal feedback and tailored check-ins that evolve with the user’s progress.
$35 Million Series B Led by HartBeat Ventures Fuels Expansion
On October 1, 2025, Simple announced the closing of a $35 million Series B funding round led by Kevin Hart’s HartBeat Ventures, bringing total funding to $45 million. The round also included participation from private credit firm Liquidity. HartBeat Ventures approached Simple following the successful launch of Avo two years prior. At the time, Simple was profitable with strong metrics and significant traction, making the partnership a strategic fit.
“We weren’t looking for investors initially, but HartBeat Ventures felt like an amazing fit for us, so we agreed,” Prytkov said.
Vision for Comprehensive Health and Wellness
Looking ahead, Prytkov aims to expand Simple’s capabilities beyond weight loss. Planned initiatives include enhanced GLP-1 medication companion features and launching specialized programs targeting women’s health and midlife wellness. Ultimately, Prytkov envisions Simple evolving into a versatile health app addressing sleep, stress, and movement, positioning the company as the “Duolingo of health” — a fun, daily companion for building sustainable healthy habits.
“The goal is simple. Become the go-to fun health companion people use every day, and the most effective way to build healthy habits,” Prytkov concluded.
FinOracleAI — Market View
Simple’s recent $35 million Series B funding led by Kevin Hart’s HartBeat Ventures marks a significant milestone in the AI-powered health coaching sector. The app’s strong ARR and subscriber base underscore growing consumer demand for personalized, accessible virtual wellness solutions.
- Opportunities: Expansion into GLP-1 companion features and specialized health programs could diversify revenue streams and user engagement.
- Risks: Intense competition from established players like Noom and WeightWatchers may pressure market share and user acquisition costs.
- Technology: Leveraging advanced LLMs for personalized coaching provides a competitive edge in user retention and efficacy.
- Market Trends: Increasing acceptance of virtual health solutions positions Simple well for sustained growth.
Impact: Simple’s AI-driven approach and strategic funding partnership position it to disrupt traditional weight loss markets and expand into comprehensive health management, signaling positive momentum for the company and investors.
