Notes default app on iphone is one such app which I use the most to write down daily tasks so that I can track them and complete them on time. Now with the release of ios 4.1 and above you can now change the font in the default native notes app on your iphone or ipod touch.
By default the font on notes app becomes Helvetica when you upgrade your iphone to 4.3.3, follow the procedure to change the font in notes app on iphone or ipod touch.
1. On the homescreen, tap the settings icon
2. Under settings you will see the notes app settings as you scroll down as shown in the image below.
3. Under notes app settings you can select the font as well the place where iphone notes should be stored either iphone or gmail account configured.