I've never heard of another computer that interfaces with a Bolt. To maintain overall miles, I copy each ride from the Bolt companion app to Cyclemeter, which uses a local database, and use that for all my stats. I only keep one weeks worth of rides in the Bolt. The advantage of having a local database is you don't need WiFi or cellular to access any of your ride data.
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HCFR Cycling Team
Ride Safe ... Ride Hard ... Ride Daily
2017 Colnago C-RS
2012 Colnago Ace
2010 Giant Cypress