Saving power while using your phone then bragging about it on the internet is all the rage these days – it's like hypermiling for smartphones. If you're not into flashing custom kernels to get the job done, there's now Per-App Modes from the developer behind Franco's Kernel.

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Per-App Modes lets you automatically set a CPU frequency, temperature threshold, GPU clock, and more that will be activated when you're using specific apps.

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