A promise is read as trust and obligation. Dream books ask whether it was kept or broken, as a sign of how you weigh your word and the words of others.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.