Set it as your launcher

Jenny can optionally replace your phone’s home screen, but you don’t have to use it that way — everything else about the app works identically whether or not you do.

Why this exists

Jenny’s manifest declares the HOME, LAUNCHER, and DEFAULT intent categories on its main activity, the same categories a real launcher app declares. That’s a deliberate choice, not an accident: the idea is presence. An assistant you have to remember to open is easy to forget about; one that’s simply there when you press Home is not. If the agent is going to message you proactively and act on a schedule anyway, being the first thing you see reinforces that instead of competing with it.

It is also what makes the “dedicated device” use case work: a spare Android phone, sitting on a desk, permanently plugged in, that boots straight into the agent instead of an app drawer nobody opens.

Setting it as your launcher

1. Install Jenny (see Install the APK) and complete onboarding.
2. Press the Home button on your device.
3. Android detects more than one app registered to handle Home and shows you a chooser. Pick Jenny, and choose “Always” (rather than “Just once”) if you want it to stick without asking again every time.

If you don’t want the chooser to appear at all yet, just don’t press Home after installing — Jenny only takes over the role once you actively pick it.

Reverting to your normal launcher

Android’s Home-app selection is a system setting, not something Jenny controls once you’ve picked “Always.” To change it back:

1. Open Android Settings → Apps → Default apps → Home app (the exact path varies a bit by Android version and manufacturer skin).
2. Select your previous launcher (Nova, the stock launcher, whatever you used before).

Uninstalling Jenny also removes it from the list of launcher candidates automatically, but you don’t need to uninstall it just to stop using it as Home — you can keep the app, keep your memory and conversation, and simply launch it like a normal app from your regular home screen instead.

A note on screen shape

The screenshots in this documentation, and the device the project is developed and tested against day to day, is a Unihertz Titan 2 with a square 1440×1440 display and a physical scroll wheel. Jenny’s UI is built mobile-first and works on ordinary tall rectangular phone screens too, but if something in a screenshot looks unusually square, that’s why — it isn’t a fixed aspect ratio the app requires.

The honest assessment: as a launcher, it’s not a good one

Judged purely as a home-screen replacement, Jenny is a weak launcher. There are no widgets, no folders, no icon packs, and no wallpaper management — none of the things a dedicated launcher app is judged on. What it has instead is a grid of your installed Android apps inside its own “Android App” section of the Apps tab (see Phone app launcher for what that grid can and can’t do), plus a theme picker and a mascot.

The launcher role is the how, not the what: it exists to make the agent the thing you land on, not to compete with Nova or Niagara on features. If you want both — Jenny’s presence and a fully-featured launcher — treat this as an either/or per device rather than expecting Jenny to cover both jobs on your primary phone.

Related pages

• Phone app launcher — what the Android-apps grid inside Jenny can actually do (open, uninstall, hide)
• Install the APK — permissions declared, including why there’s no CAMERA or storage permission
• Introduction — the “daily launcher vs. dedicated device” framing in full