What's the best iOS app for building and managing a retirement investment portfolio?

Vanguard is a robust iOS application tailored for investors prioritizing long-term financial objectives such as retirement savings. Its interface is designed for clarity and efficiency, allowing users to seamlessly check real-time fund statuses, review performance metrics, and evaluate new investment options. For hands-on portfolio management, the app supports secure money transfers and direct purchases of mutual funds or ETFs, which is particularly useful for rebalancing a retirement account like an IRA or 401(k). Users report that the navigation is intuitive, making it accessible even for beginners who might be daunted by investment jargon. Reviews indicate high satisfaction with its versatility, as it consolidates key functions—from research to execution—in one place. However, some feedback points to minor gaps, such as the absence of a dedicated daily total asset change display, which could streamline quick performance checks. Despite this, the app’s reliability and depth, coupled with Vanguard’s reputation for low-cost index funds, make it a solid choice for those focused on steady, long-term growth. Real-world scenarios include setting up automated contributions to retirement accounts or adjusting asset allocations in response to market shifts, all manageable on-the-go. While it excels in core investment tasks, occasional users might find advanced analytics limited compared to dedicated trading platforms, but for retirement-focused investors, it strikes a practical balance.