Is there a good iOS app that provides detailed battery information and system diagnostics?

Device Monitor² is a robust utility app for iOS that caters to users seeking granular insights into their device's performance and battery health. It consolidates multiple monitoring functions into one interface, eliminating the need for separate apps. For battery tracking, it displays detailed metrics such as current capacity, health percentage, and notably, the time remaining until a full charge—a feature often missing from default iOS settings. Beyond batteries, the app offers real-time system diagnostics covering CPU usage, memory allocation, storage breakdown, and network activity. This makes it suitable for IT professionals troubleshooting devices, power users optimizing performance, or casual users curious about their iPhone's inner workings.

Reviews indicate that the information is presented clearly and thoroughly, with non-intrusive advertisements and a reasonably priced pro package that unlocks advanced features. Users report that the app functions reliably, with one noting it has 'every feature I can think of ever needing or desiring.' However, some minor imperfections exist; for instance, a few users have requested additional tools like a built-in cache cleaner, which is not currently included. The interface, while informative, might feel dense to beginners unfamiliar with technical metrics. Despite this, its affordability and all-in-one approach make Device Monitor² a compelling choice for comprehensive device monitoring on iOS.