The best alternatives to NuBike are Van Moof, Vanhawks Valour Bike, and Ampler. If these 3 options don't work for you, we've listed a few more alternatives below.
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VanMoof is an inventive Amsterdam based company that plays at the intersection of bicycles, technology, and cities. Born and raised in the Netherlands, they loved getting from A to B on two wheels, but had never found the perfect city bike.
The AM1 is a lightweight motorised bike. It looks like a bike, handles like a bike, weighs the same as a bike but rides like you're freewheeling downhill with a tailwind. Prices from £499 ($665)
Ride is the beautiful multi city bike share app showing you realtime information about the bike share scheme in your city See real-time info about the number of available bikes & spaces at stations closest to you Covers over 400 bike share schemes worldwide, perfect for you commute or when travelling
On chain cubes are a collection of 616 Rubik's-like puzzle cubes built on Ethereum--you can interact with and manipulate their on-chain data by sending transactions to the on-chain cubes contract.