We are using app promo for our mobile advertising campaigns in India since last 1 year now & we have seen remarkable results with them! The team is very professional and understands what they do well. They always deliver as promised and keep you updated at all times about your campaign's progress. There isn't anything I dislike or would say needs improvement from their end. You will be glad to know that they provide custom solutions which cater to each business requirement. It has been an amazing experience working with this agency so far but if there was something more than meets my expectations then it could've been better. For me personally - nothing really good enough out of the box solution available otherwise i wouldn't recommend anyone else too look into these guys! Their support staff also provides great customer service over phone calls/ emails etc., which makes things much easier when dealing remotely (India).