My wife was tired of me asking her what we were having for dinner, especially when she had planned a meal she wished me to cook, so I built her an app that now let's us add all of our favourite recipes to, plan our weekly meals and weekly shopping all from one place and more importantly I no longer need to ask her what she wants for dinner.
Making it public after a gruesome few weeks making sure it was ready to be used by more than just the two of us, let me know if you wish to have early access.