My company is doing some field research related to the labeling of products in grocery stores. We'd like to provide our staff with iPads and a preloaded app that makes it easy for them to record whether each product has a certain nutrition label that is clearly displayed. Ideally, the field researchers would be able to easily drill down to each product (e.g., beverage/soft drinks/pepsi/2 liter bottle) and indicate whether it has the label or not. We want to try to make this as easy on the researchers as possible, so we'd prefer using some sort of drill-down form than a spreadsheet app like Numbers. Does anyone have any suggestions regarding apps we could use?