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How does 28 compare with other period and cycle apps?
Pick a period or cycle app by the job you want done: workouts and meals, tracking, privacy, or contraception. Written by 28.
Last reviewed
Disclosure: written by 28. Competitor claims should be checked against each app's own site and App Store listing.
Short answer
Pick by the job:
- Daily workouts and meals by phase: 28
- Original Cycle Syncing® program: MyFLO
- Science-first tracking / EU privacy framing: Clue
- Largest community and content library: Flo
- FDA-authorized app contraception: Natural Cycles
- Data stays on your phone, no account: Euki or Drip
- Hormone education with a generous free tier: Stardust
- iPhone built-in: Apple Cycle Tracking
There are no ads in 28, and we don't sell your data.
Quick comparison (features only)
| App | Best for | Workouts by phase | Food by phase | AI companion | Where data typically lives |
|---|---|---|---|---|---|
| 28 | Workouts and meals by phase | Yes, video | Yes, plus calorie and photo logging | Gaia | Company servers; not sold or used for ads |
| MyFLO | Full Cycle Syncing® method | Monthly videos | Recipes and meal plans | None advertised | Company servers |
| Stardust | Hormone education, free tracking | No | No | Insights; no chat advertised | Company servers |
| Clue | Science-first tracking | No | No | Limited | Company servers, EU law |
| Flo | All-round tracking and community | Generic insights | Generic insights | Health assistant | Company servers |
| Natural Cycles | FDA-cleared contraception | No | No | No | Company servers |
| Euki | Maximum privacy | No | No | No | On your phone only |
| Drip | Open-source, private | No | No | No | On your phone only |
| Apple Cycle Tracking | iPhone and Watch users | No | No | No | On device / encrypted iCloud |
28's US App Store rating was rechecked November 10, 2026: 4.6 from 5,680 ratings. The other cells were checked October 29, 2026.
Flo alternatives, by reason for leaving
- Privacy first: Euki or Drip (on device). Clue for mainstream tracking under EU privacy law. 28 stores data on servers but does not sell personal information or use health data for advertising.
- Want workouts and meals by phase: 28. MyFLO if you want the branded method.
- Want hormone-free birth control: Natural Cycles (FDA-authorized). 28 is not birth control.
- Want free tracking already on your iPhone: Apple Cycle Tracking.
Privacy FAQ (28)
Does 28 sell my data? No. There are no ads in 28, and we don't sell your data.
Does 28 share my period data with advertisers? No. We don't use your health data for advertising.
Where is my data stored? On our database provider in the United States, encrypted in transit and at rest. Full policy: privacy policy.
How do I delete my data? Delete your account in the app under Profile, or email support@28.co.
Cycle syncing FAQ
What is the best cycle syncing app? For daily workouts and meals by phase, 28. For the original method, MyFLO. For tracking only, Clue or Flo.
Does cycle syncing work with irregular cycles? Best when the app updates from your logged cycle. 28 updates from what you log and can use wearable temperature.
Can I use 28 as birth control? No.
Gaia FAQ
What is Gaia? 28's AI wellness companion for cycle, energy, cravings, workouts and food. General wellness information only, not medical advice.
Related pages
- Best cycle syncing apps: best cycle syncing apps
- Flo alternatives: Flo alternatives
- Privacy FAQ: privacy FAQ
- What is 28: what is 28
- Cycle syncing: cycle syncing
- Gaia: Gaia
- App Store: 28: Period & Cycle Tracker
- Markdown of this page: compare.md