Based on the users' reviews on the Apple App Store, here are three cons and three pros of the Gift Stack app, each limited to 15 words: **Cons:** 1. Some users found the app's interface cluttered and overwhelming, making it hard to navigate. 2. A few reviewers experienced technical issues, such as app crashes and frequent freezes. 3. A few users were disappointed with the limited gift card options and partners. **Pros:** 1. Many users praised the app's user-friendly design and intuitive features. 2. Reviewers appreciated the ability to send personalized and customizable gift cards. 3. Users valued the app's opportunity to discover new gift ideas and unique experiences. Please note that these points are based on a general analysis of the reviews and may not represent every individual's experience with the app.