Set the High Score with Hackery
First you need to play the game a bit and save a highest score. Then, open ifile and go to:
var/mobile/applications.

Then go to doodle jump.
Then go to library/preferences.
Then go into the com.yourcompany.DoodleJum p.plist.
And then find
DoodleJumpHScore

40993

DoodleJumpHScoreSent

DoodleJumpHash.

Edit the number between and

Change to what ever you want.

Then find

DoodleJumpLocalHScores

40993
29923
26793
25311
21960
20524
20488
19309
19013
18918.
Change the top one to whatever you changed the last one to.

Easter Bunny
Enter Bunny as your name and your doodle will appear in a bunny outfit. (You’ll need the latest updated to make this work).
Alternately, you can change your name to E.B. or HOP to play the Easter level.

Another Bunny Suit Code
You can enter your name as “E.B.” to be the bunny as you play also. It’s the same bunny as “HOP” gets you, but it’s just different name. It has something to do with a movie where the bunny is named “E.B.”.

Code         Effect
Bunny        Turn into a bunny
E.B.            Play Bunny
HOP           Play Bunny
Boo            Halloween Theme
Ooga          Play as an islander from ‘Pocket God’
Snow          Snow/ Holiday theme
Creeps       Turns the enemies into those from ‘The Creeps’