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by jacksondeane 5165 days ago
1) I normally use Amazon's S3 service to host and serve images to iOS apps. Your backend will maintain and "serve" up the URL's to these photos and the iOS app will have to pull them by that URL.

2) I am sure they are pre-loading and/or caching the images inside the app. The image size, sever performance and device network speed will also determine how quickly they load.

3) Be very wary of extremely short/low estimates from candidates on oDesk. You get what you pay for.