Support

Drift — Sleep Tracker
Wolf Technologies Ltd

Frequently Asked Questions

What is Drift?

Drift is a manual sleep tracking app that helps you understand and improve your sleep patterns. Unlike other sleep trackers, Drift does not require a wearable device or smartwatch. Simply log your bedtime and wake time each morning, rate your sleep quality, and record any factors that may have affected your sleep. Drift uses this data to calculate a smart sleep score, track your sleep debt, and reveal patterns over time.

How does the sleep score work?

Your sleep score is calculated from five key components:

• Duration: How long you slept compared to the recommended 7-9 hours
• Timing: When you went to bed and woke up relative to your optimal sleep window
• Consistency: How regular your sleep schedule is from day to day
• Quality: Your self-rated sleep quality (how rested you feel)
• Factors: The impact of factors you track, such as caffeine, exercise, alcohol, stress, and screen time

Each component contributes to your overall score out of 100. The more consistently you log, the more accurate and useful your scores become.

What is sleep debt?

Sleep debt is the accumulated deficit between the sleep you need and the sleep you actually get. Drift tracks your sleep debt using a battery metaphor — think of your sleep reserves as a battery that charges when you sleep well and drains when you don't get enough rest.

• Full battery: You're well-rested with no accumulated debt
• Low battery: You've built up a sleep deficit that needs recovering
• Recovery tracking: Drift shows how your debt changes over time and helps you understand how quickly you recover

Sleep debt is a rolling calculation based on your recent sleep history, not just a single night.

What's included in Premium?

Drift is free to use for basic sleep logging and scoring. Drift Premium unlocks advanced features:

• Score Breakdown: See the detailed breakdown of your sleep score by component
• 30-Day Trends: View your sleep patterns, scores, and averages over the past 30 days
• Correlation Insights: Discover how factors like caffeine, exercise, and stress affect your sleep quality
• Sleep Debt Recovery Plans: Get personalised guidance on recovering from accumulated sleep debt
• Extended History: Access your complete sleep history beyond the standard view

Premium pricing:

• Monthly: £4.99/month
• Annual: £39.99/year (save 33%)
• Lifetime: £99.99 (one-time purchase)

How do I cancel my subscription?

iOS (Apple In-App Purchase):

1. Open the Settings app on your iPhone or iPad
2. Tap your name at the top
3. Tap Subscriptions
4. Select Drift - Sleep Tracker
5. Tap Cancel Subscription

Web (Stripe):

1. Open Drift in your browser
2. Go to Settings
3. Tap Manage Subscription
4. This opens the Stripe customer portal where you can cancel, switch plans, or update your payment method

Your premium features will remain active until the end of your current billing period.

How do I delete my account?

1. Open Drift
2. Go to Settings
3. Tap Delete Account
4. Confirm the deletion

All your personal data, including sleep logs, scores, and account information, will be permanently removed from our servers within 30 days. Please cancel any active subscriptions before deleting your account.

Is my data secure?

Yes. Your data is stored securely using Amazon Web Services (AWS) in the EU West 2 (London) region:

• All data is encrypted at rest in DynamoDB
• All data is encrypted in transit using TLS 1.2+
• Authentication is managed through AWS Cognito with secure token-based access
• We are fully GDPR compliant — you can access, export, or delete your data at any time

We do not sell or share your data with third parties. Payment processing is handled securely by Stripe (web) and Apple (iOS). See our Privacy Policy for full details.

How do I restore a previous purchase?

If you previously subscribed on iOS and need to restore your purchase (for example after reinstalling the app or signing in on a new device):

1. Open Drift
2. Go to Settings
3. Tap Upgrade to Premium to open the paywall
4. Tap Restore Purchases at the bottom of the paywall

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