Portfolio builder SaaS and ETF apps solve the same problem from opposite ends. SaaS lives in your browser: bigger tables, deeper data, export buttons, sometimes multi-portfolio views. Apps live in your pocket: quick checks, alerts, trade from the couch. Neither is better in the abstract. The right one depends on how you actually behave, and most people lie to themselves about how they behave.
Be honest about your workflow. Rebalance twice a year, hold four funds? You don't need portfolio builder SaaS. A decent ETF portfolio builder app plus a solid web database covers everything, and a subscription would pay for features you open never. SaaS earns its keep for tinkerers managing family portfolios across accounts, spreadsheet lovers who want exports, and anyone who prefers seeing ten funds in a table instead of one at a time on a phone screen.
If you go shopping, judge on unsexy criteria. Does it disclose data sources and update frequency? Does it compute overlap from actual holdings, or estimate from categories? Can you export your work, or does your portfolio live hostage on their servers? Can you cancel without a phone call? A fund vs fund comparison tool in 2026 should handle the basics too: fees, tracking, distributions. An ETF comparison database search tool with clean data beats a beautiful SaaS with stale numbers every time. Data freshness is the whole game.
My bias: most individuals should skip the SaaS tier entirely. The phone app handles monitoring, the web handles research, and the money you save compounds. Complexity is a cost too, and I say that as someone who loves a good dashboard.
For the research half, ETFCompare is the free web database: 108 ETFs, fees and overlap side by side, no subscription. Start at etfcompare.fyi.