Local LLM Playground

Developer Tools

$10.00 · Designed for iPad. Not verified for macOS.

Local LLM Playground is an AI playground for running local language models directly on your iPhone. The app supports both GGUF and MLX language models, and now also supports Apple Foundation Models. From entering prompts to viewing inference results, you can easily experiment with on-device AI entirely on your device. The following AI models are bundled with the app, so you can start using local AI immediately after installation: * Qwen2.5-0.5B-Instruct-Q4_K_M (GGUF) * Qwen3-0.6B-MLX-4bit (MLX) No cloud connection or API key is required. All AI processing is performed locally on your device, and your prompts and personal data are never transmitted to external servers. In addition to prompt experimentation and model evaluation, the app provides detailed inference metrics, including: * Token generation speed (tokens/sec) * Inference time (prefill / decode) * Token usage statistics * Memory usage * Context length (n_ctx) You can also import your own GGUF and MLX models to experiment with a wide variety of local AI models. Key Features: * Load GGUF language models * Load MLX language models * Support for Apple Foundation Models * Run AI inference from custom prompts * Display token generation speed * Visualize inference timing * Monitor memory usage * Configure context size * Advanced inference parameter settings * Import GGUF models * Import MLX models Highlights: * Fully on-device AI * Supports GGUF, MLX, and Apple Foundation Models * No cloud services required * No API keys required * Privacy-focused by design * Ideal for experimenting with and learning about local AI Recommended For * Anyone interested in local LLMs * Developers exploring MLX models * Users who want to experience Apple Foundation Models * AI enthusiasts evaluating model behavior * Prompt engineering and experimentation * Comparing the performance of lightweight language models Important Notice: AI-generated responses may contain inaccuracies or incorrect information. Please independently verify any important information before relying on it.

Ratings & Reviews

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What’s New in This Version * Added support for MLX inference engine * Added support for Apple Foundation Models * Bundled Qwen3-0.6B-MLX-4bit for instant MLX experience * Continued support for Qwen2.5-0.5B-Instruct-Q4_K_M (GGUF) * Improved local model import experience * Updated app icon and UI refinements * Performance improvements and bug fixes

Version 2.0(1)

The developer, Shigeru Hasunuma, 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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Shigeru Hasunuma
    Size
    • 857.2 MB
    Category
    • Developer Tools
    Compatibility
    Requires iOS 26.2 or later.
    • iPhone
      Requires iOS 26.2 or later.
    • iPad
      Requires iPadOS 26.2 or later.
    • Mac
      Requires macOS 26.2 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.2 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Stellar Rockets
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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