Pricing models are fairly standard worldwide even though the numbers vary. Shared e-scooters typically charge an unlock fee plus a per-minute rate, which makes them ideal for short hops and surprisingly expensive for long rides; a half-hour cruise can cost as much as a decent meal. App-based bike shares run cheaper per minute, and municipal bike systems usually sell day or multi-day passes with unlimited short rides included, where each ride under a set duration, often 30 or 45 minutes, is free within the pass and you just re-dock to reset the clock. That municipal model is nearly always the best value for sightseeing days.
Traditional rental shops undercut everything for full-day use, offering daily rates that beat per-minute apps by a wide margin, plus you get a lock, sometimes a helmet, and a bike suited to longer rides.
So match the tool to the day: apps for spontaneous point-to-point hops, a municipal day pass for a day of short rides between sights, and a shop rental for a proper day of cycling. Check the local operator's app or website for current rates rather than trusting old blog posts, since micromobility pricing changes constantly.