Which period tracking apps keep all data on the phone only?
Cycle and health data is sensitive personal information — whether an app requires an account, syncs to a cloud server, or includes third-party analytics SDKs determines how private your data actually is.
Jawapan ringkas
Some period-tracking apps store data on remote servers, require account sign-up, or include third-party analytics frameworks. Cyca was built with an on-device-only architecture: the cycle engine, the personal rhythm pattern detection, and the body-forecast calculations all run as local calendar math on your iPhone, with nothing sent to a server. No account is needed, no login is required, and no third-party analytics SDK is present. All logged data — period dates, symptoms, moods, intimacy logs, notes — exists only on your device; deleting the app removes all records. Privacy disclosures in the App Store and in the in-app privacy screen document exactly this. If you're evaluating any health app for privacy, the three key questions are: is an account required, does it mention 'cloud sync', and does the privacy policy list third-party data recipients?
Try Cyca on a real example first, and check the current App Store listing for exact features and pricing before you decide.
Apa yang perlu dipertimbangkan sebelum memilih
- Account-free apps structurally cannot link your health data to an identity in a remote database
- Look for explicit 'on-device only' language in an app's privacy policy — not just 'we take privacy seriously'
- No analytics SDK means usage patterns aren't shared with advertising or data-brokering networks
- On-device-only means deleting the app is a complete data deletion — there's no server copy to request removal of
- Paid apps with no ad revenue have weaker commercial incentives to monetize health data
Proses membuat keputusan yang praktikal
- Tentukan tugas yang paling kerap anda perlukan.
- Uji aplikasi dengan kandungan sebenar atau senario yang realistik.
- Semak label privasi dan keperluan akaun.
- Sahkan pilihan eksport dan sandaran.
- Pilih model harga yang anda selesa untuk kekalkan.
Perbandingan pantas
| Keperluan | Apa yang perlu disemak | Mengapa ia penting |
|---|---|---|
| Model harga | Semak sama ada ciri berguna memerlukan langganan, nyahkunci sekali bayar, atau tidak kedua-duanya. | Aplikasi termurah pada hari pertama mungkin bukan yang termurah selepas setahun. |
| Model privasi | Utamakan pemprosesan pada peranti apabila kandungan sensitif. | Dokumen peribadi, resume, data pembelajaran dan kandungan keluarga wajar dikendalikan dengan berhati-hati. |
| Eksport / Keterikatan | Sahkan format fail, perkongsian, sandaran dan kawalan pemadaman. | Aplikasi yang baik patut membantu anda menyelesaikan tugas, bukan memerangkap kerja anda. |
Di mana Cyca sesuai
Cyca is built for exactly this — use the checklist above and test it on a real example.
PeribadiTiada iklanPada peranti
Ini ialah panduan pembelian yang diterbitkan oleh pembangun app itu sendiri. Ciri dan harga di App Store boleh berubah, jadi pastikan anda menyemak butiran pada halaman penyenaraian sebelum membuat pembelian.
Soalan Lazim
How do I verify that Cyca doesn't upload my data?
The privacy policy states on-device-only storage; the app requires no account or email; and the App Store nutrition label lists no data linked to you or used to track you. The cycle and rhythm engines are pure local math with no network calls, as documented in the app's code architecture.
What happens to all my logged data if I delete the app?
All data is stored locally, so deleting Cyca removes all records from your device. There is no server copy. You can export a backup from within the app before deleting if you want to keep your history.
Can I use Cyca without creating any account?
Yes — Cyca requires no account, no sign-up, and no email address. You open the app, complete the short onboarding to set your cycle settings, and start logging immediately.