Hey,
One of the Preferred Freelancer and Apple Platform Developer here.
I will get directly to the point of the changes you require:
1. Logo is quite easy, will just replace your old logo or add in the new one as per whatever position/size you want it to be
2. How many screens are there in the app ? If its just 1 or 2 screens, then it won't be a problem, but for screens more than that, I think you will need to increase your budget a bit, as it would be creating a new storyboard/layout for iPhone screen size
3. Can you provide the translation in a CSV file ? A Excel sheet perhaps, like one column for english, one for other language, one of other, etc. This way, I can export each translation column per language and directly add them to localization
Will add a button with flag image (dropdown) to select the language.
4. Need more explanation, but if you mean to add a custom date (with event/note) in Calendar app of iOS, it is surely possible but fairly complex. My current bid doesn't include this as I need to know exactly what you need to do, since if its the complex part, I will have to charge GBP25-50 more accordingly for the logic part
Can complete the project within 5-7 days, once all the information is provided (2-3 days for each task)
Regards
Regards