Monitor the CPU, storage and memory usage on the iPhone and iPad with these apps.

Do you want to know what is going on inside your iPhone or iPad. If you are curious about what iOS is doing behind the scenes, these four apps will show you the CPU, RAM, storage and more.

Some people just want to use their iPhone and iPad and don’t care what is going on below the surface. Others are curious and if you are the sort of person that uses Activity Monitor on the Apple Mac or Task Manager on Windows PCs, you will love these four apps.

They show how iOS is using memory and storage, and how hard the CPU is working. They show hardware information, network details and much more.


Lirum Device Info Lite

Price: Free | By: Rogerio Hirooka | Size: 152MB | iOS: 9.0 or later

Lirum Device Info is an excellent and very comprehensive system monitor and system information app. It is one of the best looking and it shows what is inside your iPhone in great detail.

The home screen is attractively designed and contains most of what you need to know. The circular graphic at the top shows the battery level and the percentage if storage left. The storage used didn’t match what iOS says in Settings.

Below is the available storage in gigabytes and the time since boot. A live scrolling chart at the bottom shows the CPU, RAM and Wi-Fi usage.

 Lirum Device Info for the iPhone Lirum status monitor app for the iPhone

Open the menu at the side and in the Tools section are 15 hardware items including the CPU, memory, storage, battery, gyroscope, proximity sensor, barometer and others.

All of these show live displays from the sensors in the iPhone, which makes them not only interesting to look at, but also useful for checking that they are working.

The Device section displays information about every aspect of the iPhone’s hardware is more detail than you will ever need.

This is a good app, but it is large compared to some of the other apps


System Status Lite: hw monitor

Price: Free | By: Techet | Size: 10.1MB | iOS: 10.0 or later

System Status Lite is a one-screen app. However, it contains a lot of information and you must swipe up to see it all.

The top part displays the most important information and a large graphic at the very top shows the current battery level. Below this is the storage status and a bar shows the amount used and free. Unlike the other apps, this matches what iOS shows.

 System Status Lite system monitor for the iPhone and iPad System Status Lite system status monitor for the iPhone and iPad

Below is a CPU usage bar and this is a live display of the processor activity in the iPhone. You can see how hard it is working.

Swipe up and there is a lot of information about the Wi-Fi and mobile networks, like the IP address, DNS server, gateway, mobile network type, and so on.

There isn’t as much information or as many tools as some other apps, but it is good for viewing network information.


Battery Memory System Status Monitor

Price: Free | By: Cactos App | Size: 5.1MB | iOS: 6.0 or later

Battery Memory System Status Monitor has stuffed a lot of keywords into the name, but it is descriptive of the app. The screen display has a sort of retro look to it, which actually makes it look a bit like an PC running Dos.

There are four sections on the screen and at the top is the CPU usage. There is a small scrolling live chart and a breakdown of the usage by User, System and Idle.

In the middle is a memory section and it breaks down the memory usage into Active, Inactive, Wired and Free. It shows the total, user and physical memory used.

These figures will not mean much to many people and memory usage is actually quite complicated. Inactive memory is not being used, but was recently used and might be used again. Active memory is recently used memory and wired memory is memory in use. If the free memory is low, it is not necessarily anything to worry about.

 Battery Memory System Status Monitor app for the iPhone Battery Memory System Status Monitor app for the iPhone

At the bottom of the screen is the storage space used and battery level. The coloured bars are easy to read, but the storage usage didn’t match up with that shown in iOS Settings. There are System and Network tabs that show useful information.

I like this app and there is a great widget for the Today screen.


S2 System Status Monitor Lite

Price: Free | By: Nivin Regi | Size: 5.5MB | iOS: 8.0 or later

S2 System Status Monitor Lite with usage Widget battery charge and Memory data Manager Info is a bit of a mouthful! The startup screen shows the device memory, but it really means device storage. It has the amount free and used, and the total. The used storage didn’t seem to match what iOS showed in Settings.

Below the Device Memory display is a list of system attributes like the device name, uptime, screen resolution and so on.

The RAM Usage screen has a comprehensive breakdown of the memory usage and it shows the total, free, used, active, inactive, and wired. Below is some basic information about the battery and processor.

 S2 System Status Monitor Lite for the iPhone and iPad S2 System Status Monitor Lite for the iPhone and iPad

The third and final screen shows network information like the ISP, IP address, DNS servers, Wi-Fi settings and so on. This is quite a good section if you need to know the network settings.

The app is OK, but it does not have the detailed information


The best status monitor app

There is something strange going on with these apps and the amount of storage reported and they cannot seem to agree. Go to Settings > General > iPhone Storage and at the top is the storage used.

Only one app showed the same figure as iOS and that was System Status Lite. The other apps seemed to add the System usage right down at the bottom of the screen.

That can’t be right because my iPad says 12GB used at the top and 6GB System at the bottom, which adds up to 18GB used on a 16GB iPad. The apps seemed to show a different figure in this case, more than iOS said, but not adding the two figures together either. The storage used and free was therefore very confusing, except for System Status Lite.

Lirum Device Info has a huge amount of information about the iPhone and iPad, and you can monitor and test every feature in the device. It is the best of the bunch, but I also like the display of Battery Memory System Status Monitor.