Playground For LM
Run AI Models On Your Device
Free · In‑App Purchases · Designed for iPad
Run local MLX models, understand images, use RAG, and route smarter workflows with Playground for LM — now with beta APIs for advanced AI setups.
Your chats, voice transcriptions, and files stay on your device.
Playground for LM is a private local AI workspace for Apple devices. Run supported language models with local llama.cpp-based inference, chat with models offline, manage your own model library, and transcribe supported audio locally with Whisper.cpp.
The app includes a limited free trial so you can test the core workflow on your device. Playground For LM Pro unlocks the full experience, including extended local model usage, full transcription access, premium themes, and the exclusive gilded Pro app icon.
Local AI Chat
Run supported local language models directly on your device. Test models, compare responses, experiment with prompts, draft text, and build personal AI workflows without relying entirely on cloud-based chat services. Free users can try the chat workflow with a limited message allowance. Playground For LM Pro removes the free-user message restriction.
Local Audio Transcription
Turn supported recorded or imported audio into text with local Whisper.cpp-powered transcription. Review generated transcripts and organize spoken content into cleaner, more readable text. Free users can try transcription with a limited allowance. Playground For LM Pro unlocks the full transcription workflow.
Model Library Management
Choose or create your own model library folder. Add models, load them, chat with them, and unload them when you are done. Playground for LM is designed for users who want clear control over where their models are stored and how they are used.
Clean Output Rendering
Playground for LM supports readable rendering for common AI-generated formats, including Markdown, code blocks, LaTeX formulas, tables, and structured lists.
System Diagnostics
View useful runtime and model information while working with local AI. Depending on your device, model, and workflow, the app may display loading state, model status, memory-related notes, transcription state, runtime behavior, and generation performance.
Playground For LM Pro
Upgrade to Playground For LM Pro to unlock extended local model usage, full local transcription access, premium themes, the exclusive gilded Pro app icon, and future Pro features.
Privacy-Oriented by Design
When using supported local language models, inference runs on your device through the app’s local runtime. When using local transcription, supported audio is processed on device.
Some actions, such as downloading models, importing files from external locations, restoring purchases, completing in-app purchases, or opening external legal documents, may require a network connection.
Important Notes
Playground for LM does not include every possible AI model or transcription model by default. Users are responsible for ensuring that any model they use is compatible with the app and that they have the right to use it.
Local AI models and transcription models may require significant storage, memory, and processing power. Larger models may load slowly, fail to load, or perform differently depending on your device.
Generated content and transcription results may be inaccurate, incomplete, or misleading. Speech transcription may be affected by background noise, speaker accent, audio quality, language, and model limitations. Always review important information carefully before relying on it.
Playground for LM gives you a practical way to experiment with private local AI on Apple devices: local chat, Whisper.cpp-powered transcription, model management, clean rendering, diagnostics, and a focused workspace under your control.
What’s New
This release introduces a new generation of Playground for LM, bringing local intelligence, multimodal understanding, and smarter model workflows together in one unified experience.
On supported devices, Playground for LM can now run compatible MLX models locally, taking advantage of Apple silicon to deliver faster, more private on-device inference.
Multimodal workflows have also been redesigned. Native multimodal models can understand images directly, while text-based models can now use a VLM-powered fallback to analyze visual content and convert it into useful text context. This makes image understanding available across more models, even when native vision support is not built in.
This update also adds beta support for RAG, allowing models to reference external knowledge and generate more context-aware responses. A smarter routing system now helps choose the right path across local models, vision models, multimodal models, retrieval workflows, and API-based execution.
For advanced workflows, the new beta API makes it possible to connect Playground for LM with external tools and use available compute resources, including computer-side processing when configured.
These features are currently in beta and may affect stability in some situations. Compatibility, performance, and behavior may vary depending on your device, model, and setup.
The developer, 泽铖 王, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 泽铖 王
- Size
- 63.8 MB
- Category
- Productivity
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 9 more
- English, French, German, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
13+
- 13+
- Infrequent
Cartoon or Fantasy Violence
Profanity or Crude Humor
Horror/Fear Themes
Medical Treatment information
Alcohol, Tobacco, Drug Use or References
Guns or Other Weapons
- In-App Purchases
Yes
- Playground For LM Pro $5.99
- Copyright
- Copyright © 2026 Wang ZeCheng. All rights reserved.

