The Helix units have Auto Chart Live with up to 8 hours of contour mapping internal memory. OR you can write those files directly to a Zero Line card.
Auto Chart and Auto Chart Pro are computer softwares that create contour map from recordings or and will convert Auto Chart Live data to Auto Chart.
Live is a different format and can only be read from the unit's memory or what has been transferred to a Zero Line card. Those maps are overlayed on whatever map card you have added or the base map.
You can have Auto Chart Live maps and Auto Chart maps on the same Zero Line card.
All the versions of Lakemaster are different and are on a Lakemaster map card.
Humminbird Helix 12 CHIRP SI, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2, SOLIX 12 SI, 360, RC-1