Based on the users' reviews, here are three pros and three cons of the "Subtraction Flash Cards" app, each limited to 15 words: Pros: 1. **Effective learning tool**: Many users praise the app's ability to improve subtraction skills with its interactive flashcards. 2. **Customizable options**: Reviewers appreciate the ability to adjust difficulty levels, card design, and other settings to fit individual needs. 3. **Engaging experience**: Users enjoy the app's visual and interactive interface, making learning subtraction a fun and engaging experience. Cons: 1. ** Limited practice options**: Some users find the app's practice options limited, particularly for advanced learners seeking more challenging exercises. 2. **No audio capabilities**: The app lacks audio support, which can make it difficult for some users to hear spoken numbers or pronunciation guidance. 3. **Occasional glitch**: A few reviewers report encountering occasional glitches, such as frozen screens or lost progress, which can be frustrating.