Guided meditation
A spoken guide can be useful when you are learning a technique, need prompts, or prefer not to manage the session yourself.
Unguided soundscapes
Ambient audio can mask distractions without telling you what to think or do. It works well for people who already have a meditation technique.
Binaural-beat audio
Binaural beats add stereo frequency differences to the listening experience. They are popular for relaxation and meditation, but specific outcome claims should be judged individually.
Structured programs
Programs such as Holosync add progression, instructions and support around the audio. The value is partly in the system and adherence structure—not just the sound file.
A simple buying checklist
Ask whether headphones are required, how long sessions last, whether the program is progressive, what support is included, how refunds work, and whether the seller distinguishes research findings from promotional inference.