Introduction
A session is a period of user activity in your app. Session metrics (length, frequency) reveal how engaged users are. Tracking sessions is fundamental to product analytics.
What Is a Session
Session: A continuous period of user activity, ending after a period of inactivity (usually 30 minutes).
Example: User opens app at 2pm, browses for 10 minutes, closes app. Reopens at 2:15pm, uses app for 5 minutes. That's 1 session (two app opens within 30 minutes).
Key Session Metrics
- Session length: Duration of each session (minutes)
- Sessions per user: How many sessions per day/week/month
- Session frequency: How often users return
- Session depth: Number of actions/screens per session
Session Length: Time-On-App
Metric: Average time user spends in app per session
Calculation: Total time in app / Total sessions
Interpretation:
- Increasing session length = users finding more value
- Decreasing session length = engagement problem or new user cohort with shorter needs
Session Frequency: Engagement
Metric: How many times users return to the app per day/week
Example: DAU/MAU ratio of 0.4 means 40% of monthly users open daily. High frequency = habit-forming app.
Industry Benchmarks
- Social apps: 15-25 min/session, 5-7 sessions/week
- Gaming: 20-40 min/session, 3-5 sessions/week
- Productivity: 10-15 min/session, 3-4 sessions/week
- Utility: 3-5 min/session, 1-2 sessions/week
How to Improve Session Metrics
Increase session length: Engaging content, recommended next action, infinite scroll
Increase session frequency: Push notifications, streaks, daily rewards
Conclusion
Sessions are the building block of engagement analytics. Track session length and frequency to understand user habits. High frequency (daily users) matters more than high length for long-term retention.
Related Analytics Resources
- App User Engagement Metrics That Matter
- DAU/MAU Ratio: Key Health Metric
- Retention Curves: Mobile vs Web
Ready to optimize session engagement? AppStorys helps you run campaigns to increase session frequency and length. Book a demo.
