Bike is an outliner and nothing else: rows, indentation, folding, and a plain file at the end of it. Jesse Grosjean has been making small Mac text apps since WriteRoom and TaskPaper, and the same priorities show. It launches immediately, stays smooth in documents with thousands of rows, and writes readable HTML or plain text that any other editor can open. Everything is reachable from the keyboard, and the whole app is scriptable.
The pricing needs attention, because there are two completely different deals wearing the same icon. Buying direct from Hog Bay is $30 once and that licence does not expire. It includes a year of updates, after which renewing costs roughly half the current price — and the copy you already have keeps working whether you renew or not. The Mac App Store listing is a $19.99-a-year subscription, and the developer says outright that Bike stops working when it lapses. Same app, opposite ownership. It is also bundled with Setapp if you already pay for that.
Do not buy it expecting a notes system. There are no backlinks, no tags, no library view, no iPhone app, and no sync of its own. If your outlines already live inside a tool you pay for and sync across devices, this will feel like a step sideways. If you want structure that opens in a tenth of a second and a file you can still read in ten years, it is hard to beat for $30.






