Hi, others can't really give you exact answer about 'stay-or-leave' question. But the thing I know is that salary shouldn't be the only factor you're considering about when it comes to career choice. Ask yourself what's the most important thing to you right now? Are you in urgent to earn more money? If yes, offer with higher pay maybe is the right answer for you. Is your first product to be launched an important accomplishment? to be 'show off' in the future? Then you may need to think twice before accepting the new offer. Wish you good luck!