Can I use an extension cord with the wind meter?

It is feasible with Sleipnir but the cable has to be of very high quality to transmit the data. With the Vaavud wind meter Mjolnir this is not possible.

Can I use the wind meter when my phone is offline?

Yes, your measurements will then be uploaded when you regain Internet connectivity.

Do you have a SDK (Software Development Kit) for the wind meter?

We do not have an SDK for the wind meters yet.

Will the collected data be shared online and accessed by other users of the app?

Your wind measurements will automatically upload to a “Map”. There they are accessible by other users of the app and are anonymous.