S

What is Session tracking?

Definition, examples, and more

Definition

The measurement of user sessions - including frequency, length, and recency of visits. Session data informs engagement metrics, triggers re-engagement campaigns, and identifies power users or at-risk churn cohorts.

How to Calculate

Average Session Length = Total Time in App / Total Sessions. Session Frequency = Total Sessions / Active Users / Time Period. Sessions per User per Week is a common engagement metric.

Example

A meditation app tracks that power users average 5.2 sessions/week at 12 minutes each, while at-risk users drop to 0.8 sessions/week at 4 minutes. When a subscriber's sessions drop below 2/week for 2 consecutive weeks, an automated re-engagement push fires: 'We miss you — try this new 5-minute session.'

Why Session tracking Matters

Session data is the earliest warning system for churn. A fitness app found that subscribers who dropped below 3 sessions/week had a 70% probability of churning within 30 days. By triggering personalized re-engagement at the 2-session threshold, they intercepted 25% of at-risk users and saved them from churning.

Frequently Asked Questions

What counts as a session?

A session starts when the user opens the app and ends after a period of inactivity (typically 30 seconds to 5 minutes of background time). Different analytics tools define session boundaries differently, so be consistent with your tool's definition.

What session metrics should I track?

Session frequency (sessions per week), session length (average minutes), session depth (screens visited or actions taken), and time between sessions. For subscription apps, also track sessions during trial periods — trial engagement strongly predicts conversion.

How do I use session data for retention?

Set up alerts when session frequency drops (early churn signal). Trigger re-engagement campaigns based on session recency. Identify the session frequency threshold that correlates with high renewal rates and design features to drive users above that threshold.

Category
Subscription App Terminology
Related Area
Mobile App Growth & Monetization
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Soft paywall

More terms starting with “S”

Sandbox environment

A development and testing environment provided by Apple or Google that simulates subscription flows without using real money. It's used to QA paywalls, trial logic, entitlement management, and billing error handling.

Segment

A defined subset of your user base, grouped by shared characteristics like geography, behavior, subscription status, or device type. Segmentation is essential for targeted messaging, pricing strategies, and paywall experiments.

Server-to-server notifications

Real-time updates sent from app stores (Apple or Google) to your backend systems when subscription events occur. These could be renewals, cancellations, refunds, or billing issues. These are for maintaining accurate entitlements and powering real-time lifecycle messaging.

Soft paywall

A monetization model where users are given limited access to premium features or content before being asked to subscribe. This try-before-you-buy approach helps build trust and improve conversion by demonstrating value early.

Software development kit (SDK)

A set of tools, libraries, and documentation that developers use to integrate specific functionality into their apps, such as subscription management (e.g., StoreKit, Botsi SDK), analytics, or attribution.

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