Specific functions like Oil Reset, SAS, or Brake Bleed.
Most new devices include a 1-year free subscription for specific software. For some models, this may include all manufacturers, while others let you pick two specific manufacturers for free during the first year. Step-by-Step Official Activation Guide
ThinkDiag often provides legitimate free software options during the initial setup:
This is and within the terms of service. It’s not a full multi-brand master license, but for a home mechanic, it can cover 90% of your needs for free.