Is there a cable available to connect the Spark remote control to iPhone/iPad?  In the store I see a RC cable for the Mavic with a mini USB at one end and lightning connector at the other - will this also work with Spark?

Yes, would be very intresting because latest SW release supports official the OTG.
Has anybody experience with it?

I use this one on my iPad Mini/iPhone 6s that I got from Amazon and it works great, one of the best accessories I've bought for my Spark.

https://www.amazon.com/gp/produc ... 0?ie=UTF8&psc=1

Hi.Thank you for the inquiry. I will be providing you an official DJI Lin where you can find all the accessories for your DJI Spark.

https://store.dji.com/product-search?q=spark

the mavic RC plug for the micro A is just on the left side of Mavic RC . So the cabel will work, but may be a bit short!

I suggest checking the bay:
https://www.ebay.com/itm/Micro-USB-Cable-Type-C-OTG-90-for-DJI-Spark-Mavic-Pro-Air-Transmitter-Control-/182806412760

Hi, unfortunately, there's is no available cable in our store that you can use for you to connect iPhone or iPad unless you're going to use a DJI Goggles as the OTG cable is not yet optimized with the iOs devices if ever that you're going to connect it to the RC. Thanks for understanding.