Pitfalls of modeling LTV and how to overcome them

Summary

Predicting lifetime value (LTV) for mobile app users is essential for ROI-driven marketing and financial forecasts. Standard ML algorithms struggle because they require large historical datasets that may not reflect current user behavior due to frequent app updates and market changes. To overcome this, a multi-model approach is recommended: use ML for recent data, measure in-app events, apply Bayesian methods for extrapolation, and leverage secondary models for validation.

Accuracy is measured through systematic bias and variance; global accuracy under 10% at day 365, unbiased across dimensions, and directional correctness at campaign level are key goals. Different stakeholders require different trade-offs between stability, accuracy, and granularity, so understanding the use case is critical. Building a robust LTV system demands significant data science and engineering resources but yields substantial business value.