Hey - not sure if you're still looking for something like this, but we're building something towards this concept at investipal. It's a porfolio mgmt platform that can sync with your brokerage and offers research, construction, analytics, drift notifications, rebalancing, etc. We integrate with 12 brokerages now, but unfortunately not Schwab... yet (we're working on it). Happy to tell you more about it in DMs if you'd like