The biggest difference is the format
A pod system normally uses a rechargeable device with a replaceable or refillable pod, while a disposable device is supplied as a self-contained product. That difference changes how you maintain the device and what replacement items you may need.
Think about ongoing replacements
With a pod system, you should know which pod or coil family the device uses before buying. With a disposable, check the product label and manufacturer information because the device is not intended to use the same replacement parts as a refillable pod system.
Compare convenience with control
Some shoppers prefer a simpler self-contained format, while others prefer a reusable device with replaceable pods. The better choice depends on the exact product, how much maintenance you are comfortable with and the manufacturer instructions.
Confirm the exact product
Do not rely only on appearance. Similar-looking devices can have different capacities, controls and compatibility. Check the complete model name and packaging before purchase.