Workload Unit (WU)

A workload unit is a usage-based billing metric that measures how much backend compute your no-code app consumes, rather than charging a flat monthly seat price. Bubble popularized the model: every action the server runs — a database search, a workflow step, an API call, a scheduled job — costs a fraction of a workload unit, and your plan includes a monthly allowance. Why it matters: unlike per-user pricing, your bill scales with how your app is built and how heavily it's used, so an inefficient workflow that reloads a large list on every page view can quietly burn through your quota. Practical note: watch the platform's capacity or usage dashboard from day one, and treat expensive patterns — unbounded searches, workflows that loop over many records, aggressive polling — as things to optimize before launch. Design lean queries and cache results where you can, because at scale, compute metering, not the subscription tier, becomes your real cost driver.