How to transfer photos to iphone without itunes?

I just switched to the iphone5 from an android phone. I have over 4, 000 pictures that were saved to my sd card on my thunderbolt phone and I want to transfer them to my iphone. I want to avoid syncing the pictures through itunes because then I can't delete them directly from my iphone. I don't want to have to plug in my phone to itunes every time I want to delete a picture. Is there a way that I can transfer pictures from my computer directly (or indirectly) to the iphone? I'm open to using apps or software as long as it is free. Please help!

Added (1). I noticed that when I sync pictures from iTunes to my iPhone then I can't delete them directly from the phone after that. That trash can doesn't show up. That's what I'm trying to avoid. I'm not sure. But I don't think my old android phone is compatible with the cloud.

Are you asking how to delete photos directly from your iphone or from itunes. To delete from phone, tap the photo icon, then the picture you want to delete, then the trash icon. I don't think you can delete photos from itunes directly.

you can send it to your email, log in with your iphone, tap and hold on the photo, then tap save image.of course, you'll have to do it for every photo.

don't have an android phone, but can't you send to cloud then download to your phone?