Cardzen

Cardzen is an AI personal-finance tool that tracks every credit, perk, and reward multiplier across your credit cards so you use each card at the right time and stop losing benefits you already pay for. It keeps your whole wallet in one place, reminds you before a statement credit or perk expires, and tells you which card to use for a given purchase to earn the most rewards. An AI advisor knows your actual cards, so you can ask questions like which card to book a flight with and get a specific answer rather than generic advice. A daily digest, called Daily Zen, surfaces what needs attention that day, and wallet analytics show where your value is going. The premise is that the average premium cardholder leaves a large amount of credits and points unused each year and keeps paying annual fees for perks they never redeem; Cardzen is designed to help you recover that value and decide whether a card's fee is still worth it. It offers a free tier plus a Pro plan that adds credit alerts, benefit tracking, Daily Zen insights, and wallet analytics. Cardzen works on the web and as an iOS app, and is optimized for mobile browsers.

Best for multi-card holders who want to stop losing statement credits and points and always use the highest-earning card for each purchase.