What subscriptions really cost
Subscription prices move constantly and quietly, and almost nobody keeps a record. We do: 5 price indexes, 28 per-service price histories and a running changelog — sourced, dated, and free to reuse with attribution.
How we publish
Every number has a source
Each figure links to the report that documented it. If we can't cite it, we don't publish it.
Limits stated up front
Each study says what it doesn't measure. A list price isn't what people pay, and we say so on the page.
Studies here are built from public reporting. They contain no Submo user data: subscriptions people track in the app, and anything found by connecting Gmail, are used only to show that person their own charges.