Run Rocket 3B on iPhone & iPad
Detailed general assistant finetuned from StableLM 3B with DPO
Rocket 3B runs 100% private on iPhone & iPad inside Private LLM — no internet connection required, no data sent to any server.
Model on Hugging Face
Specifications
- Parameters
- 2.8B
- Context window
- 4K tokens
- License
- CC BY-SA 4.0
- Quantization
- OmniQuant 4-bit
- Family
- StableLM 3B
What Rocket 3B is good at
Rocket 3B uses just 2.8 billion parameters to deliver assistant performance that exceeds many larger alternatives. Based on the StableLM 3B family and tuned with direct preference optimization, it follows instructions reliably and handles general knowledge tasks well. It crafts thorough, detailed replies, as shown by a high win rate on AlpacaEval and an average response length over 1,200 tokens.
Which of your devices can run it
iPhone
iPad
How to run Rocket 3B in Private LLM
- Download Private LLM from the App Store.
- Open the in-app model library and choose Rocket 3B.
- Download the model once, then chat fully offline.
Variants & related models
Nous Capybara 3B V1.9
Complex summaries of advanced topics from an instruction-tuned StableLM 3B assistant
StableLM 2 Zephyr 1.6B
General instruction assistant from StableLM 3B outperforming 10x larger models
StableLM Zephyr 3B
General instruction-following assistant fine-tuned from StableLM 3B with DPO
Airoboros l2 7b 3.0
Instruction following specialist built on Llama 2 7B
Airoboros M 7B
General instruction-following model built on Mistral with structured math output
Cat Llama 3 70B Instruct
Immersive roleplay via strict prompt adherence, Llama 3 70B finetune
Frequently asked questions
Yes. Rocket 3B runs on iPhone models with enough memory, such as iPhone 17 Pro Max, iPhone 17 Pro, iPhone Air, iPhone 17, iPhone 16 Pro / 16 Pro Max, iPhone 16 / 16 Plus, iPhone 16e, iPhone 15 Pro / 15 Pro Max, iPhone 15 / 15 Plus, iPhone 14 / 14 Plus / 14 Pro / 14 Pro Max, iPhone 13 Pro / 13 Pro Max, iPhone 13 / 13 mini, iPhone SE (3rd gen), iPhone 12 Pro / 12 Pro Max, iPhone 12 / 12 mini, iPhone 11 / 11 Pro / 11 Pro Max, iPhone XS / XS Max, fully on-device in Private LLM — no internet connection required.
Rocket 3B runs on iPhone and iPad in Private LLM; a Mac is not required.
Yes. Once downloaded in Private LLM, Rocket 3B runs 100% on-device — no internet connection, and nothing is sent to any server.
Private LLM is a one-time purchase with no subscription and no per-message cost. The models themselves are open source — once downloaded, they run offline with nothing to pay per use.
Why run Rocket 3B in Private LLM
Private LLM has run local AI on iPhone, iPad, and Mac since 2023, well before Apple Intelligence, LM Studio, Ollama, etc. existed. Inference happens on your device, so your Rocket 3B conversations never reach a server. The part most apps gloss over is quantization, and that is exactly where on-device quality is won or lost. Most llama.cpp and MLX wrappers ship the same off-the-shelf 4-bit RTN weights. Private LLM ships GPTQ and OmniQuant quantization, tuned per model, and our 3-bit OmniQuant models match or beat those 4-bit RTN builds on the same Apple Silicon. Run the same model both ways and you feel it in the first reply. See how our quantization works.
Specifications and summary come from Rocket 3B's Hugging Face model card, released under the CC BY-SA 4.0 license. Private LLM ships its own quantized models, built with OmniQuant quantization tuned per model, and isn't affiliated with the model's authors.