Halarta
Shared event albums
One shared album for everyone’s photos from an event. Tie it to a place, and only people who are there can add photos.
An independent app studio
Apps for the groups in your life
Halarta pools everyone’s photos from an event. Planet4.Us turns a group chat into a plan. Planet4.Me keeps lists and notes where the whole household can see them.
The apps
Each is a separate product. All three run in the browser on a phone or a laptop.
Planet4.Us
Group hangout planner
A free group hangout planner. One chat where friends vote on the date and the spot, and Nova, the AI assistant, drafts the plan.
Planet4.Me
Lists, notes, and to-dos
Notes, to-dos, and a shopping list that learns what you buy, shared with the people you live with.
How we build
One job per app
Each app does one thing for one kind of group and leaves out anything that doesn’t serve it.
Nothing to install
Every app is a website that works in a current browser on a phone or a laptop. Updates go out as soon as they’re ready.
Support from the builders
The people who design and build the apps answer the support email, and your feedback decides what we build next.
Write to the people who build the apps
Send questions, feedback, bug reports, or an idea for an app. We read every message.
Email the studio