What FitnessAI does

FitnessAI is a New York-based, privately held B2C mobile application company founded in 2019 that delivers AI-powered personalized strength training workout plans to individual fitness consumers. The company's core product is a freemium mobile app distributed globally through the Apple App Store and Google Play Store, which generates revenue via mobile app subscriptions. As of the most recent disclosures, the app has been downloaded over 5 million times with 500,000+ active users and a 4.8-star rating.

The platform's proprietary technology is an adaptive progressive overload algorithm built on a dataset of more than 100 million logged sets and 5.9 million+ analyzed workouts from real training sessions. The AI ingests live performance data and adjusts sets, reps, weights, and rest periods in real time, while also adapting workouts to whatever equipment the user has available (gym, home, or travel). Supporting features include guided exercise demos for form correction, Apple Watch performance sync, 3D BodyScan body composition visualization, Apple Health and Fitbit calorie tracking integration, Kudos & Nudges social accountability, and In-App Challenges for gamified competition. The company went through Y Combinator's S20 cohort in 2020 and has reached $1M+ ARR, though the operating legal entity is Wordless LLC (with Moonset Labs, LLC serving as the content/development entity).

FitnessAI operates a product-led, self-serve go-to-market model with no public pricing tiers, no sales interaction, and onboarding driven by QR codes and direct app store links. Customer acquisition is supported by an active content marketing blog, organic social presence on Twitter/X, Facebook, and Instagram, and earned media coverage in TechCrunch, Forbes, CNET, Well+Good, and Yahoo Finance. Headcount is 11-50, and the company maintains GDPR, CCPA, and PCI-DSS compliance posture, with payment processing delegated to Apple, Google, and Stripe.

Name

FitnessAI

Legal name

Wordless LLC

Website

https://fitnessai.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

11–50 employees

Short description

FitnessAI is a New York-based B2C mobile app, founded in 2019, that uses an AI adaptive algorithm trained on 100M+ real strength training sets to deliver personalized, real-time progressive overload workout plans to individual fitness consumers globally via the App Store and Google Play.

Ownership category

akta.pro rank

Product category

AI Fitness and Workout Planning Software

NAICS

Fitness and Recreational Sports Centers (71394)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Online/Remote Personal Training & Programming (HSADAAAM)

Keywords

• AI workout planning
• Strength training app
• Fitness mobile app
• Personalized training programs
• Progressive overload training

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Software

Cost components

Technology or R&D, Marketing or Sales, Personnel, Operations, Infrastructure

Revenue model

1. Mobile App Subscription: FitnessAI generates revenue through mobile app subscriptions sold via the Apple App Store (iOS) and Google Play Store (Android). The app appears to use a freemium or free-to-start model with a premium tier implied by the existence of a 10% discount code and an 'exclusive offer' CTA. Specific pricing tiers are not publicly disclosed on the website.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

FitnessAI sells a consumer mobile application that uses AI to generate and continuously adapt personalized weight lifting workout plans. The app analyzes individual performance and adjusts sets, reps, and weights in real time, delivering 5-30 minute strength training sessions that work with any equipment. Revenue is generated through mobile app subscriptions sold via the Apple App Store and Google Play Store.

Product overview

FitnessAI is a unified AI-powered fitness platform built around its core mobile application, which provides personalized strength training workouts that adapt in real time. The platform consists of the FitnessAI App as the primary product, supplemented by social features (Kudos & Nudges, In-App Challenges), wearable integrations (Apple Watch), health data integrations (Apple Health, Fitbit), body composition tracking (3D BodyScan), and an educational blog. The ecosystem is unified through AI-driven progressive overload and adaptive training algorithms built on data from millions of workouts.

Differentiator

Problem solved

Functional benefit

Products and services

• FitnessAI App AI-powered strength training workout planner mobile application that provides personalized, adaptive workout programming for individual consumers based on progressive overload principles; adjusts sets, reps, and weights in real time based on user performance data and integrates with Apple Watch, Apple Health, and Fitbit.

Quantifiable outcome

• 5M+ downloads and 500K+ active users with a 4.8-star app rating
• +4 more outcomes

Segments2 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

AI capability6 records

Feature10 records

Partnerships

Three partnerships are on record, tiered core.

• Apple WatchcoreTechnology or IntegrationFitnessAI integrates with Apple Watch to automatically sync performance data, including heart rate and workout metrics, enabling accurate training data collection that informs the algorithm's adaptive adjustments. This wearable integration is highlighted as a key product feature on the main website.
• Apple HealthcoreTechnology or IntegrationFitnessAI integrates with Apple Health to match nutrition tracking with workouts, providing users a full picture of their fitness journey. The integration enables calorie tracking and broader health data synchronization, as announced in the November 2025 Evolution blog post.
• FitbitcoreTechnology or IntegrationFitnessAI integrates with Fitbit for calorie tracking and nutrition-workout synchronization, giving users a comprehensive view of their fitness and nutrition data. This integration was introduced alongside Apple Health in the November 2025 major platform update.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Fitbod: AI-driven strength training app that builds personalized workout plans and adapts sets, reps, and weights based on user performance. Closest direct competitor to FitnessAI in AI-powered progressive overload programming.
• Freeletics: AI-based personal training app offering adaptive strength and conditioning workouts, body-weight and gym-based sessions, and coaching journeys. Directly comparable in AI-coaching positioning and global consumer subscription model.
• Future: App-based personal training service pairing users with remote coaches and personalized programming. Comparable as a tech-forward, personalized strength-training subscription targeting busy professionals.
• Jefit: Workout planner and tracker with strength-training programs, exercise database, and progress tracking. Comparable as a consumer strength-training app, though less AI-driven and more manual in its core offering.

Emerging players

• Stronger: AI personal trainer app focused on hypertrophy and strength programming with adaptive progression. Comparable as an AI-first strength coaching product, though at an earlier commercial stage.
• Aaptiv: Audio and video guided fitness app with strength, running, and conditioning programming. Comparable as a subscription digital coach, with overlapping consumer target but differentiated content modality.

Broad incumbents

• Tonal: Smart home gym with AI-driven strength coaching and adaptive weight resistance. Comparable in AI strength-training vision but pairs the software with proprietary connected hardware at a higher price point.
• Peloton: Large connected fitness platform with strength, cardio, and treadmill/bike hardware plus the Peloton App. Comparable as a premium subscription fitness brand competing for the same consumer wallet share.
• Apple Fitness+: Apple's integrated fitness subscription with personalized recommendations across strength, HIIT, yoga, and more. Competes with FitnessAI for Apple Watch users and benefits from default platform distribution.
• Tempo: Smart home strength-training system with AI form coaching and 3D sensors. Comparable in AI strength-training category but anchored to a premium hardware purchase rather than a pure mobile subscription.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/FitnessAI_
• Facebookfacebook.com/fitnessai.co
• Instagraminstagram.com/fitnessai

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds1 record

Investors3 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about FitnessAI