How to switch to HeySis without starting your period history over

Before you start

Keep access to your old tracker until you have checked the result. Make sure you can see previously logged periods, not just future predictions. If your old app offers an export, keep a private backup for your own records; that does not mean HeySis has a file-upload button.

For example, Clue explains how to request and download a JSON copy of your data. Clue export instructions. This backup is distinct from the screenshot and Apple Health routes below.

Route 1: calendar screenshots

1. Open the calendar in the previous app.
2. Take a clear screenshot of a month or year showing actual period records. Keep month names and the year visible.
3. In HeySis, open the import option during setup or under Profile → Data & privacy → Import from another app.
4. Select up to four screenshots in one pass. Recognition happens on your iPhone.
5. Check the imported period days against the old calendar.

This is designed for period days that can be recognized from the image. A cropped label, unusual theme or similar forecast color may affect the result. If a screenshot is not recognized, do not assume there were no periods; try a clearer calendar view or enter the missing dates manually.

Route 2: Apple Health

If your old app wrote cycle records to Apple Health, choose the Health import in HeySis and grant access to the categories you want to read. Only supported records that are present and accessible can come across. Data remaining solely in the old app cannot be recovered from Health.

This route can include more than period days, depending on the available categories. Permissions are controlled by iOS. You can review Health access in system settings; importing is not a request to turn on cloud sync or online AI.

What stays, and what needs checking

Existing populated entries in HeySis take priority; an import can fill empty fields. Check a few representative months, the most recent period and any long gaps in tracking. Never treat a previous app’s fertile-window prediction as an observed period or confirmed ovulation.

Do not expect screenshots to bring across chat history, every symptom or private notes. If keeping these records matters, preserve a backup separately. When you decide to leave the old app, handle its data deletion and any paid subscription as separate actions through its own controls.

After the switch

Enter the next day you actually want to record and see whether the new routine fits. You do not need to recreate every optional detail for the history to be useful. Prioritize correct dates and the information you genuinely use.

For a wider comparison, read HeySis vs Flo and HeySis vs Clue. If something looks wrong after import, keep the original record and contact support without sending personal health screenshots by email.