Homework help
Explained step by step, at the level your child needs.
Free · iPhone app (beta) · Hemmia at home on a Mac or with Docker
Your AI,
at home.
Hemmia is a private AI for the whole family. It runs on a computer in your house, or simply on your phone, with the AI models you choose. Everyone gets their own account and their own chats.
iPhone app coming soon
- No account with us
- No ads
- No tracking
- Open source
- Chats stored on your devices
- Free with local models
What families ask Hemmia
Everyday questions, from homework to dinner, for everyone in the house.
Dinner from the fridge
Take a photo of what’s there and get three ideas.
Letters, explained
Add a PDF from the tax office or the school and get it in plain words.
Plan your week
Weekly goals for school, work and home, and a short brief each morning.
Pictures
Describe a picture and Hemmia draws it, on a Mac at home.
Two ways to start
Start on your phone in two minutes, or set Hemmia up at home for the whole family. You can move from one to the other later.
Two minutes
Just on your phone
Install the app, add your own key from Anthropic or OpenAI, and start chatting. Your chats and your key are stored on the phone.
- An iPhone
- A key from Anthropic or OpenAI
You pay the provider for what you use, a few cents a day for most people. No markup.
For the whole family
At home
Hemmia runs on a computer in your house, the hub. It can use AI models that run on that computer, and everyone in the family gets their own account on every device.
- A Mac with Apple silicon, or any computer with Docker
- Phones and computers in the family
Free. Models on the hub cost only electricity; cloud models are optional, with your own key.
Made for the whole family
Hemmia is built around a household, not around one person at a desk.
- Invite everyone with a QR code or a link.
- Everyone has their own private chats, locked with their own passphrase. Other family members can’t open them, and neither can the admin account.
- Teen accounts see only the models you allow, search the web with strict safe search (or not at all), and can’t create pictures.
- Notifications when an answer or a picture is ready.
- Your phones reach Hemmia at home and away with Hemmia Connect or Tailscale, without opening ports on your router.
Hemmia and the usual AI apps
Most AI apps are built for one person and keep every conversation on their servers. Hemmia does it differently.
| Topic | Many AI apps | Hemmia |
|---|---|---|
| Where your chats are stored | On the company’s servers | On your hub or your phone, encrypted |
| Who can read them | The company, under its own rules | You. A cloud provider only for chats where you pick its model |
| Account needed | Yes, with email and often a phone number | No account with us |
| Ads and tracking | Common | None |
| A family of four | A paid plan per person for the best models | Free with local models, or one shared key |
| Choice of AI | The company’s own models | Local models, Anthropic or OpenAI |
| Accounts for children | Set up by the company, under its rules | Teen accounts with limits you set |
No fine print
What actually goes where
“Private” is easy to claim. Here is exactly what happens when you ask Hemmia something.
- You write or add a photo.On your phone, in the app or the browser.
- It goes to your hub, or stays on your phone.Through Hemmia Connect or Tailscale, encrypted all the way to your computer. Our relay passes it on but can’t read it.
- The model you chose answers.A model on your hub: nothing leaves the house. A cloud model: Hemmia asks first, then sends the chat to the provider with your own key.
- The answer is stored on your device.Encrypted on the hub with your passphrase, or on the phone with a key kept in its secure storage. Not on a server of ours.
Six promises
Chats stored at home
On your own hub or phone, encrypted. With models on your hub, nothing leaves the house.
Everyone has their own lock
Each person’s chats are locked with their own passphrase.
No account with us
You never sign up with us to use Hemmia.
No ads, no tracking
No analytics in the apps or on this website.
Your choice of AI
Models on your own computer, or Anthropic and OpenAI with your key.
Honest about limits
Local models are slower and less capable than the best cloud models. We say so.
What it costs
Hemmia is free. You pay only for what you choose to add.
Hemmia
Free
The apps and the hub. Models on your hub cost only electricity.
Cloud models
At the provider’s prices
Optional, with your own key. A few cents a day for most people; set a spending limit at the provider. Hemmia also stops at a monthly limit per person.
Hemmia Connect
Free in the beta
then €29 a year per hub
Optional: your phones reach the hub with one switch, at home and away, up to 20 GB a month. Free during the beta, then 30 days free. Or set up Tailscale yourself, for free.
Questions
Do you see my chats?
No. They are stored on your hub or your phone, encrypted. When you choose a cloud model, Hemmia asks first and the chat goes to that provider with your own key.
What computer do I need for a hub?
A Mac with Apple silicon (M1 or newer, 16 GB of memory or more for good local models), or any computer that runs Docker. On your phone alone you need no computer at all.
How good are local models?
Good for everyday questions, homework, recipes and letters; slower and less capable than the best cloud models. You can use both and choose per chat.
Can my children use it?
Yes, with a teen account you create for them: they see only the models you allow and can’t create pictures. Their chats are private to them, like everyone else’s.
What happens if I lose my passphrase?
You get a recovery code when you create your account. With it you can set a new passphrase. Without it, nobody can open your chats again, not even an admin.
Coming next
Planned, without dates: the Android app, and spaces the family shares.
Bring a private AI home.
Hemmia is in beta. Hemmia at home is free, as an installer for your Mac or with Docker; you use it in the browser and in the iPhone app, which is in testing now.
Get started