Renko candlesticks kind of resemble small boxes or bricks. Renko charts have no lower or upper shadows. When using the Renko charts, you could alter the box size. A new box would pop up on the chart, this would only happens when some rare level of price change happens. On a Renko chart it is important to see the price changes as vital but volume and time don't mean much on a Renko chart. The forex trader can use Renko charts to confirm his trade setups. After a while, you can say the Renko is a better tool for you if it helped you take stronger positions even making less mistakes. As a swing trader, Renko charts are a nice option if you work on long time frames as Renko charts are really helpful in confirming the results of your technical analysis.
As a tip, I would advise you use slower settings of the range of 1 on Renko charts to reduce the much noise.