Side-by-side comparison
| Feature | Luna | data-hungry apps |
|---|---|---|
| In the ad business | No | Some apps yes |
| Account / email required | No β uses Telegram | Often yes |
| Install required | No β runs in Telegram | Usually yes |
| Data you can control | Your entries, your choice to share | Varies |
| Core tracking price | Free | Varies |
| Languages | 17 | Varies |
What to check in a private tracker
Read the privacy policy for two things: does the app share or sell your data to third parties / advertisers, and can you delete your data on request. Be wary of free apps funded by ads β your data may be the product.
A cautionary tale
In 2021, Flo settled with the US FTC over allegations it shared users' health data with companies like Facebook and Google. It's a reminder to check how any period app actually handles your data β not just what the marketing says.
How Luna approaches privacy
Luna keeps your data tied to your Telegram session, isn't in the advertising business, and shares your cycle with a partner only if you choose to. You should still read our current privacy policy and decide for yourself β that's the responsible way to choose any health app.
Honest note
No app is perfectly private, and you should always verify claims against the current privacy policy rather than marketing. Luna's design minimises data and avoids the ad business, but the right choice is the one you've checked yourself.