Countertop machines come in sizes from single‑serve/pint units up to family‑size batches. Examples in listings include 16 ounces (1 pint), 2 quarts, and models listing around 67–68 ounces.
Some countertop models require you to pre‑freeze a bowl or frozen base before churning, which means the unit isn’t ready on demand. Other models have a built‑in compressor and don’t require pre‑freezing, allowing you to make frozen treats anytime without freezing parts in advance. Product listings typically note which approach a model uses.
Many countertop models include preset programs or modes (some list multiple presets), digital or touch controls, and timers. Common dedicated functions include soft‑serve, mix‑in operations, and texture/firmness settings to help control the churning process.
It depends on the design. Models that require a pre‑frozen bowl or insert generally limit spontaneous consecutive batches because you must refreeze parts between uses. Models with built‑in compressors typically allow continuous or back‑to‑back batches without pre‑freezing the bowl.