How AI companion memory works—and what to check
“Memory” can mean different things in different apps. Learn the common approaches, their limits, and the privacy questions to ask before sharing personal details.
Read the guideThe Duple Journal
Notes on AI companions and making them your own.
Clear, practical guides to AI companion apps, personalization, creative tools, and the choices behind a more personal experience.
Latest guide
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How much do AI companion apps cost?
Compare free access, trials, subscriptions, and in-app purchases using current official examples.
Read the pricing guideWhat happened to Replika—and what are the alternatives?
A dated, sourced explainer on Replika’s availability, policy history, and how to compare companion apps.
Read the Replika guideAre AI companions real? Are they safe?
Understand what human-like chat means, plus practical privacy, age-rating, and billing checks.
Read the safety guide