I am now in the half of transating into Czech:)...However, I found some mistakes in the English translation. So...
1. The building "Pile of Sculls" in the necro castle should be called "Pile of Skulls", because sculls and skulls is something slightly different

2. The building where you hire Minotaurs should be called "Labyrinth", not "Maze". If you decide not to change this name "Maze", you should probably change at least description of this building (The building is called "Maze" and in description it is mentioned as "Labyrinth")
And I also have some suggestions for next developement...
1. When moving heroes showing them in the centre of screen
2. Better changing of sounds - one sound should turn down and the second one then turn up
3. More buildings - maybe like it is in Heroes 3 - Village Hall, Town Hall, City Hall, Capitol... And also uprgadable buildings and units
4. Custom choosing for which population you want to play
5. If you win, there should be screen with information that you won, not just only saying that the last enemy was defeated, the related info screen if you lose
6. More variable sound during battle
7. Changing volume using default phone buttons dedicated to this action
8. Showing how long will it your hero take to get to certain object - e.g. 2 days
9. Possibility to play via bluetooth
Lastly, I just want to thank you for this great game!