Klaviyo tells you how your emails perform. RetentionLab tells you which customers are about to stop buying — before you've sent them anything. We identify the problem. Klaviyo is how you fix it. Most of our customers use both together.

No. You connect your Shopify store with one click and see your first insights in under 3 minutes. No code, no setup calls, no CSV exports. If you can use Shopify, you can use RetentionLab.

We read your order history and customer records — that's it. We never access your product inventory, pricing, or payment information. We never share your data with other brands. Your store data is yours and stays yours.

RetentionLab works best for stores with at least 500 lifetime customers. Below that, cohort analysis becomes less statistically meaningful. If you're not there yet, sign up anyway — your dashboard will improve automatically as your order history grows.

Triple Whale focuses on attribution — where your customers came from and what your ads cost. Lifetimely focuses on LTV reporting. RetentionLab focuses on one thing: which customers are about to stop buying, how much revenue that represents, and exactly what to do about it today. We're the only tool built specifically around that question.