Tonal Tech Stack

At-home strength training system with AI coaching and reformer experience

Wellness and Fitness Services San Francisco, California 501–1,000 employees Founded 2015 Privately Held

Tonal operates a hardware-software fitness platform combining real-time AI coaching with connected strength equipment. The tech stack reveals a mature data and ML infrastructure—PyTorch, TensorFlow, JAX, SageMaker, MLflow running on Databricks and Snowflake—built to personalize workouts at scale. Active projects span embedded firmware for the smart gym hardware, a mobile coaching app, and a data platform backbone; pain points center on scaling that data infrastructure and securing sensitive user biometrics, suggesting Tonal is moving beyond single-device experiences toward a broader health-data ecosystem.

Tech Stack 40 technologies

Core StackKotlin Jetpack Compose Sentry Amplitude Salesforce Python Apache Spark Databricks Apache Airflow Fivetran dbt Snowflake Redshift Flutter Swift PyTorch TensorFlow SageMaker MLflow NetSuite Android OpenSearch Apple Health SQL iOS Dart JAX SPS Commerce AOSP Snapdragon+9 more

What Tonal Is Building

◆Challenges

Supplier readiness
Tooling strategy
Protecting sensitive data
Scaling data platform
Untapped growth opportunity
Building commercial business
Improving operational system efficiency
Scalable business applications
Measuring impact of product features
Ensuring kpi definitions are reliable

▲Active Projects

Training
Event planning
Recruiting
Embedded application for tonal smart home gym
New product introductions
Global tooling strategy
Data platform backbone
Secure and scalable data systems
Data models and pipelines across diverse sources
Mobile application for intelligent personal trainer

Hiring Activity

Decelerating20 roles · 3 in 30d

Department

Sales

Engineering

Data

Ops

Support

Seniority

Mid

Senior

Staff

Manager

Junior

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About Tonal

Tonal manufactures and operates an internet-connected home gym system featuring real-time form feedback, adaptive resistance, and AI-generated strength training programs. The product now includes Pilates via a reimagined reformer interface. The company sells direct-to-consumer and operates a subscription model for coaching and programming. Tonal's 501–1,000-person organization spans San Francisco headquarters with hiring in the US, Taiwan, and Canada. Sales headcount dominates the active hiring pipeline, though active projects and pain-point language indicate engineering effort concentrates on data infrastructure, mobile application expansion, and secure handling of biometric data.

HeadquartersSan Francisco, California

Company Size501–1,000 employees

Founded2015

Hiring MarketsUnited States, Taiwan, Canada

Frequently Asked Questions

What tech stack does Tonal use for AI coaching?

Tonal uses PyTorch, TensorFlow, and JAX for model training, with SageMaker and MLflow for production. Inference runs on mobile (iOS/Swift, Android/Kotlin) and embedded systems (AOSP/Snapdragon). Data flows through Fivetran, Databricks, and Snowflake for personalization pipelines.

Where is Tonal headquartered?

San Francisco, California. The company actively hires in the United States, Taiwan, and Canada.