You can't really compare Stingle to Google, Apple, or any other cloud photo services. Stingle's whole value proposition is encryption. Google and Apple don't offer encryption-at-rest, and Google in particular is using the photos you upload to learn about you and market to you. If you're looking for cheap cloud hosting and don't care about privacy, last I checked, Google offered unlimited photo storage (with restrictions on individual photo size that are perfectly fine for non-professional viewing and use).