As has been mentioned above, the DY3 is the equivalent charger for the H Pro. However what has not been mentioned is why the various chargers above (and there are other models in these series that charge 2 batteries at a time, like the DY3) are preferable.
Please review this thread on caring for LiPo batteries:
LiPo Battery Care
The Cliff Notes version is this: One of the most important factors you can monitor on your LiPo batteries is Internal Resistance. 1) the lower the IR, the better. 2) Equally important, how far the deviation of those readings across the cells.
The only charger mentioned in this thread that cannot monitor IR is... the DY5 (and the corresponding DY3).
I would recommend the Hitec X2 Plus Black Edition as both an affordable and capable choice for the H Pro.