After analyzing the reviews on the Apple App Store, here are three cons and three pros of the GPS Speedometer and Altimeter app, each limited to 15 words: **Cons:** 1. Some users find the app's user interface clunky and difficult to navigate. 2. A few reviewers experienced weird compass readings and accuracy issues. 3. A couple of users reported battery drain and excessive power consumption. **Pros:** 1. Many users praise the app's accuracy, speed, and reliable GPS tracking features. 2. The app's customizable interface and multi-language support are appreciated by reviewers. 3. Users love the detailed logging and graphing functions for tracking and analyzing data. Please note that these conclusions are based on a subjective analysis of user reviews and may not be exhaustive or definitive.