AmbaSat-1 backer Fredric Raab uses Tago.io to create his custom Dashboard. Raab says that Tago.io also stores the data for 30 days and enables you to download data as a CSV file.

If you have an AmbaSat and a TTN (The Things Network) gateway, you can view raw, encrypted data as it is received using the Gateway tab of your TTN console. But since the data is encrypted, you can not interpret it. To interpret, you need to create a TTN application and a decoder.…”

Read more on Raab’s blog where he’s document the procedure:

https://fredricraab.wordpress.com/creating-an-ambasat-dashboard-with-tago-io/

Also of interest:

https://fredricraab.wordpress.com/creating-a-ttn-application-for-ambisat/