CardStack is ready for iPhone Duo! See a beautiful new design with your cards, credits, points, and rewards at your fingertips.
CardStack helps you get £500+ a year back from the credit cards you already carry. Track every statement credit, use the best card for every purchase, keep an eye on your points, and let Stack, our AI agent, do the heavy lifting.
Built for the UK: American Express UK, Barclaycard, HSBC UK, NatWest, Lloyds Bank, Virgin Money and more, all in local currency.
FEATURES:
- NEVER MISS A STATEMENT CREDIT
Track every credit across all your cards: dining, travel, streaming, lounge access and more. See which credits are available, which are expiring soon, and which you have already used. Get reminders before you lose them.
- USE THE RIGHT CARD, EVERY TIME
Instantly see which card earns the most for dining, travel, groceries, fuel and every other category. CardStack tells you the best card to pull out, so you never miss points or cashback.
- CAPTURE AMEX OFFERS
See your Amex Offers in one place and track every redemption, so you earn cashback on purchases you are already making.
- STACK AI AGENT, YOUR PERSONAL CARD ADVISOR
Meet Stack, a conversational AI agent that knows your whole card portfolio. Ask it anything:
"What's the best card for this hotel booking?"
"Am I missing any credits this month?"
"Is my Platinum still worth the fee?"
Stack does more than answer. It can mark credits as redeemed, set reminders and update your points balances.
- TRACK YOUR POINTS PORTFOLIO
Monitor balances across Amex Membership Rewards and Avios and more. See estimated cash values, explore transfer partners, and know what your points are worth.
- COVER YOUR ANNUAL FEE, OR CANCEL WITH CONFIDENCE
The Renewal Advisor works out whether each card pays for itself based on the credits you actually use. When your fee posts, get a clear verdict: keep, downgrade or cancel.
- SMART NOTIFICATIONS THAT SAVE YOU MONEY
Credits expiring soon. Annual fee approaching. Offers about to expire.
- SIRI AND SHORTCUTS
Ask Siri about your cards, credits and points, and jump straight to what you need.
- CARDSTACK+ UNLOCKS THE FULL SYSTEM
Stack AI Agent with full conversation history
Amex Offers tracking
Weekly AI reports
Sync across all your devices
Every credit tracked. Every offer captured. Every purchase organised.
Download CardStack and start saving.
Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Insights are really helpful, especially if you’re in the habit of reaching for the first card in your wallet/on your phone. The layout is nice and clean, there’s no bloat. Thanks!
Developer Response
Thanks for the review, Mario! I appreciate it.
- Improvement to iPhone Duo design.
- More ways to sign in and sign up.
- Bug fixes and improvements
Version 1.5.3
The developer, SPACE ROBOTS INC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Financial Info
Location
Contact Info
Identifiers
Usage Data
Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Diagnostics
Privacy practices may vary based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Provider
SPACE ROBOTS INC
Size
270.2 MB
Category
Finance
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.