Stardust alternatives: cute, social and private period trackers

Why people look for a Stardust alternative

Stardust is fun: moon phases, astrology cards, syncing with friends and partners, PMS and mood predictions. People usually leave for one of two reasons. Some want less astrology and more insight from their own data. Others are worried about privacy: TechCrunch disputed Stardust's encryption claims in 2022, and in July 2026 Mozilla research found it sharing birthdate, birth control type, reproductive goals and symptoms with an analytics firm, tied to an identifier. Stardust says that firm is contractually barred from selling or reusing the data.

Stardust alternatives compared

Which one fits you

You want the cuteness, minus the zodiac: Lulu

Lulu is a little bunny who changes color with your phase. You log symptoms as bunny drawings and tap how you feel each day. After a couple of cycles, Lulu shows how you usually feel on each cycle day and gives you a heads-up before harder days. You can invite a partner to see your phase and next period, with tips on how to help, plus today's mood, tomorrow's forecast and your fertile window if you choose, but never your symptoms, notes or history. No account; no Lulu server holds your cycle data.

You want sharing and pregnancy: Flo

Flo for Partners lets a partner follow your cycle, and Flo's pregnancy features are extensive. Read up on its privacy history first. See Lulu vs Flo.

You want depth: Clue

Clue's symptom forecasts and research partnerships make it the most detailed option here.

You want maximum privacy and minimal features: Apple or Euki

Apple's Cycle Tracking is free and private by design. Euki was Mozilla's top scorer in its 2026 review because health data stayed on the device.

Fun without the fine print

Part of Stardust's appeal is that tracking feels like a ritual rather than a chore, and that matters: an app you enjoy opening is an app you'll actually use. If that's what you'll miss most, look for warmth in the alternative too. Lulu follows your phase, logs symptoms as little bunny drawings and talks to you kindly, but its insights come from your own data, not the moon or your sign. Many people find that seeing their own pattern ("day 24, I'm usually tired and tender") is even more satisfying than a horoscope, because it keeps proving itself.

Before you switch

1. Note your recent period start dates to give your new app a head start.
2. If you used friend syncing, let your friends know you're moving.
3. Delete your Stardust account from inside the app if you don't want the company to keep your data.
4. Give the new app two or three cycles before judging its predictions.

For more on how apps handle data, read our private period tracker guide and the full Stardust review.