Running Sensors-table

Device	Cost	Status	Location1	Analysis2	Realtime3	Carry Phone4	Export13	Symmetry	Cadence	GCT	VO	Impact7	Braking	Pronation	Foot Strike	Other	Technology14
Stryd	$200	Highly Recommended	Footpod	Web/Export	Watch & Phone	No	Yes	No	Yes	Yes	Yes15					Distance, Pace, Power, Leg Spring	9-axis
Running Dynamics v2	$100	Highly Recommended	Chest	Web/App/Export	Watch		Detailed	Yes	Yes	Yes	Yes						3-axis
Running Dynamics v1	$100	Highly Recommended	Chest	Web/App/Export	Watch		Detailed		Yes	Yes	Yes						3-axis
RunScribe	$200	Highly Recommended	Footpod	Web/App			No	Yes	Yes	Yes		Foot	Foot	Yes	Yes		9-axis
MilestonePod	$25	Highly Recommended	Footpod	App			Summary	Kinda6	Yes	Yes		Foot ROI8			Yes	Leg Swing	3-axis
Moxy	$770	Worth Considering	Calf	Export	Watch		Detailed									SmO2	IR SmO2
TgForce	$145	Worth Considering	Ankle	App/Export	Phone & RTAF	Yes	Detailed		Yes			Tibia11					3-axis
Moov Now	$60	Worth Considering	Ankle	App	Phone	Yes	No	No	Yes			Tibia11				Leg Swing	3-axis
Wahoo TICKR Run	$80	Worth Considering	Chest	App/Export	Phone5	Yes	Detailed		Yes	Yes	Yes					3D Smoothness12	3-axis?
SHFT	$300	Worth Considering	Foot & Chest	App	Phone & Audio Coaching	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes		Yes	Toe-off angle, Watts, Body Angle	9-axis
Lumo Run	$80	Not Recommended	Waist	App	Phone & Audio Coaching	No	No	Yes	Yes		Yes		Body				9-axis
Sensoria	$200	Avoid	Sock/Ankle	Web/App	Phone & Audio Coaching	Yes	No	Yes9	Yes	Yes10		Foot10			Yes10		Pressure + 3-axis
BSX	$300	Avoid	Calf	Web/App/Export	Phone & Watch	Yes	Detailed									SmO2
RUNTEQ Zoi	150 EUR	Untested	Foot & Chest	?	Phone	?		No	Yes	Yes	Yes	Foot	Body	Yes	Yes
RPM2	$500	Untested	Insole	?	Phone	Yes		Yes	Yes	Yes		?		Yes	Yes		Pressure

1. Where does the sensor go?
2. What are your options for analyzing the results?
3. Can you see the data in real time? This makes a huge difference if you're trying to improve your biomechanics. "Watch" means you have real time information so on the watch which is one of the ideal approaches. "Phone" means you get real time data shown on the phone display, which if it's done right can show an awful lot of data. "Audio Coaching" means you get periodic audio messages which I find more annoying than useful. "RTAF" is Real Time Audio Feedback, which means that your hearing an indication that you're past a threshold. For example, the TgForce will be if your impact is higher than a given threshold, and it will be part of every footstep.
4. Do you have to carry your phone with you? I hate carrying a cell phone when running, so this is a factor for me.
5. Phone needed to get anything beyond HRM.
6. You can use two pods and compare the data, but the system won't compare the results for you.
7. Impact can be measured in various places, such as the foot impact, the lower leg (tibia), or the chest. The impact can be measured as peak acceleration (g's) or as rate of change of acceleration (AKA "Jerk").
8. This is Rate of Impact, which is slightly different to simple impact g's (see review for a few more details).
9. The $200 kit only comes with one sensor, so you'd need to by a second.
10. The Sensoria measures a number of metrics, but it does so remarkably badly.
11. This is a measure of the impact on the lower leg, which excludes the impact that the foot as absorbed.
12. This is the rate of change of acceleration (AKA "Jerk") in three separate axis: up/down, side-to-side, and left/right.
13. A sensor that doesn't allow for data export locks you into the vendor's tools.
14. A 9-axis sensor can detect twisting motions through its gyroscope, in addition to the acceleration measurement of a 3-axis sensor.
15. Measuring Vertical Oscillation from a footpod is a dubious proposition and the results seem unsurprisingly poor.