iLivestock is livestock management software in your pocket on your iPhone (Android coming end 2019). It does not need an internet connection so can be used in remote, off-grid areas. It integrates with Allflex EID readers to give you a complete tracking system for your herd. The software tracks key metrics such as weight, medicines, location and breeding. It integrates with popular weighing equipment to automate the capture and recording of weight data. You can see more here