I like that you can create multiple versions of your apps, such as free version (or lite) or paid one with additional features etc; very flexible pricing structure where customers only pay what they need/use most - no overpricing! Also good customer support is provided here via online chat which works well in my opinion. It's not perfect yet there are some issues regarding iOS compatibility but those were already addressed this year - so keep up improving! Currently we're using textpuffs services mainly because our users don't have enough time available themselves looking out promotional material at events / fairs & exhibitions across Europe during different months every month.