Been experimenting using my iPhone as my cyclometer/head unit, but haven't found a great app for this. Recommendations ST?

Requirements:
Supports Bluetooth LE accessories (speed, cadence, hr, power)
GPS/Map (like to have)
Displays Current Speed, Cadence, HR and Power

I tried Strava, but the small display and lack of current speed is a dealbreaker.
RunKeeper won't support cadence, power and non-GPS speed.

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ECMGN Therapy Silicon Valley:
Depression, Neurocognitive problems, Dementias (Testing and Evaluation), Trauma and PTSD, Traumatic Brain Injury (TBI)