Rainbow is a really useful app for parents. Keep pictures, track weight and growth, keep first-time events of your baby on your phone. This is an easy way to have all those moments right at your fingertips. The app consists of: 1. Breastfeeding. 2. Food. 3. Bottle. 4. Potty. 5. Breast pump. 6. Sleeping. 7. Diaper. 8. Milestones. 9. Temperature. 10. Symptoms.