Get Luna in three steps.
Luna is in closed testing on Google Play. Join the tester group, accept the invitation, and install. It takes about two minutes.
Use one Google account for all three steps — the same one signed in to the Play Store on your Android phone. Google Play links the invitation to that account.
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1
Join the tester group
The Google Group gives your account access to Luna's closed test.
Open Google Group (opens in a new tab) -
2
Become a tester
Open the Google Play testing page and tap Become a tester.
Opt in on Google Play (opens in a new tab) -
3
Install Luna
Install from Google Play. Access can take a few minutes to appear after opting in.
Install for Android (opens in a new tab)
Checkmarks are saved only in this browser to help you keep your place.
What to expect
An early look, shaped by you.
- Free during closed testing, with no payment card required.
- Android only. There's no iPhone or browser version yet.
- An account is required — Google Sign-In or email — so your journal syncs.
- Things will change. Screens and features evolve as testing continues.
- Ages 13 and up, per our Terms of Service.
Troubleshooting
Stuck on a step?
Most install problems come down to accounts or timing.
Email supportGoogle Play says the app isn't available
Check that the Play Store is signed in with the same account you used for the group and opt-in. If you have several accounts, switch accounts in the Play Store and open the install link again.
I opted in, but there's no install button yet
Google Play can take a few minutes to grant access. Wait a little, then reopen the install link or refresh the Play Store.
The testing page says I'm not eligible
Join the Google Group first (step 1), then reload the testing page. Access comes from group membership.
Can I leave the alpha?
Yes. Use “Leave the program” on the Google Play testing page and uninstall the app. To remove your data, delete your account from Settings in Luna first.
How do I send feedback?
Use Help & Feedback in the app's Settings, or email support@luna-calorie.in.