I´m thinking about buy a mavic air, can i use the same dji go app that i use for the spark, on the same phone?

yes this works flawlessly.

Should have no probs   

That´s good, thank you very much.

regards per

Hi, thanks for the inquiry. Regarding your concern, Yes. You may use the same DJI Go 4 App and the same device you're using to your DJI Spark to the Mavic Air. You'll just need to link your Mavic Air's RC to your AC and then after that, kindly connect your device to your RC and registered your drone. Please make sure to use a compatible device for compatibility purposes. Should you have further question, please let me know. Thank you.

Thanks for the extra info.

regards Per.

Yep! It'll be all good. No worries

good to hear, thanks.

Regards Per.