Gemma4.app — Your Complete Guide to Google Gemma 4
Gemma4.app is a curated resource hub for Google's Gemma 4 open-weight AI models, offering an online playground, download guides, local setup instructions, and mobile deployment paths — all in one place.
What is Gemma4.app?
It is a documentation and testing site for Gemma 4, the latest open model family from Google DeepMind. The site provides an online playground to test models via OpenRouter, step-by-step guides for downloading from official sources like Hugging Face, Kaggle, and Ollama, and instructions for local and mobile deployment. It consolidates scattered documentation into a single, practical resource.
Key Features
- Online Playground — Test Gemma 4 instruction models (text and image input) directly in the browser via an OpenRouter-backed endpoint, rate-limited for anonymous users.
- Model Variant Comparison — Detailed notes on four variants: E2B (edge), E4B (balanced local), 26B A4B (efficient MoE), and 31B (dense flagship), with hardware recommendations and performance tradeoffs.
- Download Guides — Links to official download sources: Hugging Face, Kaggle, Ollama, Google AI Edge Gallery, each with step-by-step instructions.
- Mobile Deployment Guides — Separate guides for Android (via AICore) and iOS integration, covering device compatibility and API usage.
- Prompt and Tool Use Playbooks — Structured guidance on prompt formatting, function calling contracts, and reasoning budget control to avoid common integration errors.
- Troubleshooting — Coverage of memory pressure, weight format mismatches, tokenizer issues, and other runtime failures with actionable fixes.
Who is it for?
- Developers evaluating Gemma 4 — Test model behavior online before committing to a local deployment.
- Engineers setting up local inference — Get step-by-step download, installation, and runtime setup for desktop and edge hardware.
- Mobile app developers — Learn how to integrate Gemma 4 on Android and iOS with official guidance and code examples.
- Researchers comparing model architectures — Understand the tradeoffs between Dense and Mixture-of-Experts variants through curated comparisons and performance data.
What can you do with Gemma4.app?
- Test online — Use the embedded playground to prompt Gemma 4 instruction models with text and images, see real-time responses.
- Download and deploy — Follow official download paths for local runtime environments like Ollama and Hugging Face Transformers.
- Compare model tiers — Read detailed notes on E2B, E4B, 26B A4B, and 31B to match the right model to your hardware and latency needs.
- Fix setup issues — Consult the troubleshooting section for common failures such as out-of-memory errors, wrong weight formats, and missing tokenizer files.
FAQ
Is Gemma4.app an official Google property?
No, it is an independent resource hub created by the community to streamline access to Gemma 4 documentation and tools. It is not affiliated with Google.
Why focus so much on local inference?
Local inference offers privacy, cost savings, and offline availability. The site emphasizes local deployment to help users avoid recurring API costs and maintain data control.
Will every page promise exact VRAM numbers?
No. VRAM requirements vary with quantization, batch size, and runtime. The site provides approximate ranges rather than exact numbers, and recommends testing on real hardware.
What can Gemma4.app help with?
It helps with downloading, running locally, deploying on mobile, comparing model variants, and troubleshooting common Gemma 4 issues — all from a single, focused site.
