Google · Balanced speed and quality

Gemma 3 1B on iPhone

  • Balanced

Gemma 3 1B is Google’s compact open model, and in Priobs it is the balanced everyday choice. A 767 MB download that runs on almost any iPhone with iOS 26, fully on device.

How to install it

Free download · iPhone, iOS 26.0 or later

Specifications

Company
Google
Parameters
1B
Download size
767 MB
Minimum RAM
1 GB
Category
Balanced
Tools
Not supported
License
Gemma License
Format
4-bit quantized, MLX

Numbers come straight from the model catalogue inside the app. Gemma 3 1B and its licence belong to Google.

About Gemma 3 1B

What is Gemma 3 1B?

Gemma is Google’s family of open models, built from the same research as Gemini but sized for laptops and phones. Gemma 3 1B has 1 billion parameters. In Priobs it runs as a 4-bit quantized MLX build.

Who made it

Google releases Gemma under the Gemma licence, which allows on-device apps like Priobs to run it. Google positions Gemma as the open, downloadable sibling of Gemini.

What it’s good at on iPhone

Gemma 3 1B is the balanced speed and quality pick:

  • Everyday chat and quick questions
  • Short writing: messages, quick edits, summarising a paragraph
  • Feels quick even on older iPhones
  • A good first model if you are not sure what you need

Gemma 3 1B does not use Priobs tools. For calendar, reminders or Health, pick a model marked Tools.

It will not match Llama 3.2 3B or Qwen 3 4B on long, complex tasks. For most day-to-day chat, it is quick and good enough that you will not miss them.

Which iPhones can run it

Gemma 3 1B needs at least 1 GB of memory. Priobs checks your iPhone, hides models it does not have the memory for, and warns you if a model is close to the limit and may be unstable. Every iPhone that runs iOS 26 has more memory than that, so it runs almost anywhere.

Setup

How to get it in Priobs.

One download over Wi-Fi and you are offline-ready for good.

  1. Open Priobs and go to the Model Library.

  2. Find Gemma 3 1B and tap Download (767 MB).

  3. Select it as your active model and start chatting. No internet needed from here on.

FAQ

Gemma 3 1B, answered.

General Priobs questions

Is Gemma 3 1B a good first model to try?

Yes. It is small, fast and runs on almost any iPhone that runs Priobs. A good place to start before you decide whether you need something bigger.

How does Gemma 3 1B compare to Qwen 2.5 1.5B?

Both are light everyday models. Qwen 2.5 1.5B is stronger in languages other than English. Gemma 3 1B is a slightly smaller download with a lower memory need. You can keep both installed.

Does Gemma 3 1B support tools?

No. For calendar, reminders or Health, pick a model marked Tools, like LFM2 1.2B or Qwen 3 1.7B.

Can Gemma 3 1B handle long documents?

It summarises and edits shorter text well. For longer, more complex work, Llama 3.2 3B or Qwen 3 4B give more reliable results.

Does Gemma 3 1B need internet to work?

Only for the download. After that it runs fully offline, like every model in Priobs.

Other models

You can keep several installed at once.

Switching models takes one tap. A common setup: a small, fast model for quick questions and a bigger one for anything that needs more depth.

Compare every modelBest local LLMs for iPhone in 2026How to run an LLM on iPhone

Run Gemma 3 1B on your own iPhone.

Priobs is free to download with a free trial. Pick a model, and every answer is generated on your iPhone.

Free download · iPhone, iOS 26.0 or later · Cancel any time in App Store settings