How Can We Help?

Getting started is easy! When you first open Shark, you'll be asked to enter your last period start date. From there, just tap "Log Today" whenever you want to record your period or symptoms. The app will learn your patterns over time for better predictions.

Shark uses Core ML to achieve 90%+ accuracy for cycle predictions. The more you log, the better it gets. Our AI learns your unique patterns and adjusts predictions accordingly. Keep in mind that cycles can vary naturally, so predictions are estimates - always consult a healthcare provider for medical decisions.

Shark lets you track:

• Period flow (light, medium, heavy)
• Symptoms (cramps, headaches, bloating, etc.)
• Mood and energy levels
• Custom notes

Premium users get access to advanced tracking options and detailed analytics.

Absolutely! Shark is designed with privacy as the top priority:

• All your data is stored locally on your device
• We never send your health data to our servers
• AI predictions run entirely on your device using Core ML
• Optional iCloud sync uses end-to-end encryption

See our Privacy Policy for full details.

If you enable iCloud sync in Settings, your data will automatically sync between all your Apple devices signed into the same iCloud account. This sync is end-to-end encrypted - even Apple can't read your health data.

You have full control over your data:

• Delete all data: Go to Settings → Delete All Data
• Delete specific entries: Swipe left on any log entry
• Uninstall: Deleting the app removes all local data

Since we don't store your data on our servers, there's nothing to delete on our end.

The free version includes:

• Basic period tracking
• Calendar view
• 3 months of history
• Basic cycle predictions

Premium unlocks AI-powered predictions, unlimited history, advanced analytics, custom tracking, and more.

Subscriptions are managed through Apple:

• Open the Settings app on your iPhone
• Tap your name at the top
• Tap Subscriptions
• Find Shark and tap Cancel

You'll continue to have premium access until the end of your current billing period.

Refunds are handled by Apple according to their App Store policies. To request a refund:

• Visit reportaproblem.apple.com
• Sign in with your Apple ID
• Find your Shark purchase
• Request a refund

Try these steps:

• Ensure iCloud sync is enabled in Shark settings
• Check that you're signed into the same iCloud account on all devices
• Make sure iCloud Drive is enabled in iOS Settings
• Try toggling sync off and on in Shark settings
• Restart the app

If issues persist, contact us at support@getshark.app

Prediction accuracy improves with more data. Here's how to help:

• Log your period consistently when it starts and ends
• Give the AI at least 3 cycles to learn your patterns
• Update logs if you initially entered incorrect dates

Remember that cycles naturally vary - predictions are estimates based on your history. If you notice significant irregularities, consider consulting a healthcare provider.