Privacy Policy
Our games and this website · Last updated 24 October 2026
This policy covers the iOS and watchOS games LLM Wars and Nidus Pets ("the apps"), made by Eigen Devs ("we", "us").
The short version
The apps do not collect, store on a server, sell or share any personal information. There are no accounts, no ads, no analytics and no tracking. Your game lives on your device.
The only personal information we hold is the email address of anyone who signs up on our blog for a playtest invite or launch notice. See Playtest and launch mailing list.
What stays on your device
- Your saved game and settings (sound, tutorial progress and similar) are stored on your iPhone and, for Nidus Pets, your Apple Watch. Nidus Pets copies the save between your own iPhone and Apple Watch using Apple's WatchConnectivity. It does not leave your devices.
- Deleting an app deletes its data.
Microphone and speech (Nidus Pets)
If you choose to talk to your pet, Nidus Pets uses the microphone and Apple's speech recognition to turn your words into text. Where your device supports it, recognition happens on the device. On devices that don't, Apple may process the audio under Apple's privacy policy. We never receive or keep your audio or text. You can turn microphone access off at any time in Settings.
Steps and Health (Nidus Pets)
If you connect Health, Nidus Pets reads your step count so your pet can walk with you. It only reads steps, never writes to Health, and step counts stay on your iPhone and Apple Watch. We never receive them. You can turn access off at any time in Settings › Health › Data Access.
Your pet's replies (Nidus Pets)
On supported devices, your pet's replies are written by Apple's on-device language model. What you type or say to your pet stays on your device.
Notifications
If you allow them, the apps schedule local reminders on your device (for example, when your pet is hungry). No push server is involved.
Purchases (Nidus Pets)
In-app purchases are handled by Apple. We receive no payment details. The app checks your purchases with Apple to unlock what you bought.
Sharing (LLM Wars)
LLM Wars can create an image of your game stats. It is shared only if you choose to share it, using the share sheet, to the app or person you pick.
Game Center (LLM Wars)
If you are signed in to Game Center, LLM Wars sends your best model score, final fan count and final fortune to Apple's Game Center leaderboards, where other players can see them next to your Game Center name. This is run by Apple under Apple's privacy policy; we don't receive it. You can turn Game Center off in Settings.
This website
eigendevs.com counts visits with Cloudflare Web Analytics, which uses no cookies and does not track you across sites. It records only the page visited, the site that linked to it, and general browser, device and country details. The apps contain no analytics.
Playtest and launch mailing list
If you sign up on our blog to hear about a playtest or a launch, we keep your email address, which game you're interested in, and which of the two you agreed to: a playtest invite, a launch notice, or both. We use it only for those messages. We don't sell it or share it with anyone else.
The list is held by our email service, Kit, which processes it for us under its data processing agreement. Every email has an unsubscribe link. We delete the list for a game once that game has launched and its launch notice has gone out, or sooner if you ask.
You must be 16 or over to sign up. To see, correct or delete what we hold about you, write to [email protected], which is also our data protection contact.
Children
The apps do not knowingly collect information from anyone, including children under 13.
Changes
If this policy changes, the new version will be posted here with a new date.
Contact
Questions: [email protected]