# WhichCard Use the Right Card — Calculate Interest-free Period > Calculates credit card interest-free periods for optimal financial management. (iPhone/iPad app by AtEase Technology Co., Ltd.) - Source: https://appshunter.io/ios/app/whichcard-use-the-right-card/id6740490104 (this page in markdown: same URL + `.md`) - Developer: [AtEase Technology Co., Ltd](https://appshunter.io/developer/1740272107) - Category: Finance, Lifestyle - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 58 MB - Languages: American English, Arabic, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Polish, Brazilian Portuguese and 6 more - Released: 2025-02-24 - Data updated: 2026-06-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/whichcard-use-the-right-card/id6740490104/reviews.md ## What is WhichCard Use the Right Card? When you have multiple credit cards, which one do you choose? Did you know that choosing a different card means the repayment date for that purchase can vary? If you choose the right card, you can enjoy an interest-free period of over 50 days for that purchase, which can be very helpful for your finances and cash flow. Key Features: 1.Automatic Interest-Free Period Calculation: WhichCards automatically calculates the interest-free period for each of your credit cards, helping you make the best choice every time you swipe. 2.Beautiful Home Screen Widget: Check your credit card’s interest-free period quickly and conveniently, directly from your home screen with our intuitive widget. No more hassle of checking each card’s details separately! Choosing the right credit card can make a significant difference in your financial health. By understanding the grace periods of your credit cards, you can optimize your spending and avoid unnecessary interest charges. WhichCards helps you track and compare the interest-free periods of your cards, ensuring that you make informed decisions to maximize your cash savings. Download WhichCards today and start taking control of your finances! More informations about WhichCard: Privacy policy: https://www.lingogo.ai/wc/privacy.html Terms of conditions: https://www.lingogo.ai/wc/terms.html ## Key features - Automatic interest-free period calculation - Home screen widget for quick access - Informed spending decisions - Maximize cash savings - Avoid interest charges ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Yearly | $4.99 | per year | | Monthly | $0.99 | per month | | Quarterly | $1.99 | per 3 months | ## Frequently asked questions about WhichCard Use the Right Card ### How does WhichCard calculate interest-free periods? WhichCard automatically calculates the interest-free period for each of your credit cards. This helps you understand when payments are due to avoid interest charges and maximize your grace periods. ### Can I see my interest-free periods without opening the app? Yes, WhichCard features a beautiful home screen widget. This allows you to quickly and conveniently check your credit card's interest-free period directly from your home screen. ### What are the subscription options for WhichCard? WhichCard offers monthly ($0.99), quarterly ($1.99), and yearly ($4.99) subscription plans. These plans provide access to premium features and support the app's development. ### Does WhichCard have ads? Yes, WhichCard contains advertisements. These ads help support the app's development and allow it to remain free to download and use. ### What devices does WhichCard support? WhichCard is currently supported on iPhones. Future updates may expand compatibility to other devices. ### How often is WhichCard updated? The latest version of WhichCard is 1.3.0, last updated on October 14, 2025. Updates typically include new features, bug fixes, and performance improvements. ### What is the age rating for WhichCard? WhichCard has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content. ### Is WhichCard secure for my financial information? While WhichCard helps you manage your credit card information, it's important to review their privacy policy for details on data handling. The app focuses on calculating interest-free periods rather than storing sensitive account details. ## Version history (last 5 releases) ### 1.3.0 — 2025-10-14 Fixed an issue where membership could become invalid in some cases. ### 1.2.1 — 2025-08-04 Fix bugs and improve stability. ### 1.2.0 — 2025-08-02 Fix bugs and improve stability. ### 1.1.6 — 2025-04-23 Fix bugs and improve stability. ### 1.1.5 — 2025-04-17 Fix bugs and improve stability. ## Apps similar to WhichCard Use the Right Card | App | Rating | Price | Category | | --- | --- | --- | --- | | [BankPro: Private Digital Bank](https://appshunter.io/ios/app/bankpro-private-digital-bank/id6752861264) | — | Free | Finance | | [CardBuddy: 2FA Wallet Vault](https://appshunter.io/ios/app/cardbuddy-2fa-wallet-vault/id6740777543) | — | Free | Finance | | [BHIM Markets](https://appshunter.io/ios/app/bhim-markets/id6741787492) | — | Free | Finance | | [Subsnap: Split & Track Bills](https://appshunter.io/ios/app/subsnap-split-and-track-bills/id6743194892) | — | Free | Finance | | [DueNow](https://appshunter.io/ios/app/duenow/id6740307085) | — | Free | Finance | | [MyCardBook Pro](https://appshunter.io/ios/app/mycardbook-pro/id6748933843) | 5.0 (3) | Free | Finance | ## More apps by AtEase Technology Co., Ltd - [The Ringtoner - Ringtones](https://appshunter.io/ios/app/the-ringtoner-ringtones/id1450132982) - [Learn English with Lingogo](https://appshunter.io/ios/app/learn-english-with-lingogo/id6483808193) - [The Ringtoner Create Ringtones](https://appshunter.io/ios/app/the-ringtoner-create-ringtones/id6736897940) - [Photo Deleter: Photo Cleaner](https://appshunter.io/ios/app/photo-deleter-photo-cleaner/id6747192774) All apps by AtEase Technology Co., Ltd: https://appshunter.io/developer/1740272107 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*