I did see that but just wasn’t sure as I remember Compute! being more general purpose and I guess never realized they had offshoots oriented to specific platforms
No, COMPUTE!'s Gazette was not C64 specific. It covered all the Commodore 8-bit home systems: VIC-20, C64, Commodore 16/Plus/4, C128. It started with the VIC-20 and C64 as that is all there was, and in the end it only covered C64/128. The C64 was certainly the only model the Gazette covered during its entire lifetime.