Argmax Playground is the official Android app from Argmax, Inc. Powered by the Argmax Pro SDK, it brings real-time, fully on-device speech-to-text to your phone. All transcription runs locally with cloud-level quality that never leaves your device.

HIGHLIGHTS

• Built by Argmax — From the team behind the Argmax Pro SDK, a production-grade on-device transcription SDK for Android.
• Entirely on-device — No cloud. No network calls. No account required. Your audio stays on your phone.
• NPU-accelerated — Validated for seamless NPU acceleration on Qualcomm Snapdragon 8 Gen 1 and newer (e.g. Samsung Galaxy S22+, S23, S24, S25, S26 series). Uses GPU on other supported devices.
• Real-time streaming — See words appear as you speak with ultra-low latency.

TRANSCRIPTION MODES

• Always On: Continuous processing for the lowest latency experience.
• Voice Triggered: Processes audio only when speech is detected, staying responsive while saving resources.
• Battery Optimized: Extended voice gating with longer intervals to maximize battery life during long sessions.

FEATURES

• Record and transcribe from the microphone in real time.
• Import and transcribe audio files from your device.
• Full-screen live transcription view.
• Timestamped transcription segments.
• Detailed performance statistics.

ARGMAX PRO SDK - BUILD IT INTO YOUR APP

Everything you see in Argmax Playground is powered by the Argmax Pro SDK - and you can ship the same capabilities in your own Android app. The SDK provides a simple, high-level API for on-device speech-to-text with full control over compute backends (CPU, GPU, NPU), streaming modes, and model management. Whether you're building an accessibility tool, a note-taking app, a voice assistant, or any app that needs reliable transcription without cloud dependencies - the Argmax Pro SDK brings everything you'd need to get from prototype to production scale.

Learn more and get started at https://www.argmaxinc.com

DEVICE COMPATIBILITY

Best experience on devices with Qualcomm Snapdragon 8 Gen 1 or newer with full NPU acceleration. GPU acceleration is available on other supported devices.

Coming soon: NPU acceleration beyond Qualcomm.

PRIVACY

All processing happens entirely on your device. No audio is sent to the cloud. No account required