SigFig vs Ziggma: Which Is Better in 2026?

Prices checked October 2026. A price marked (Oct 2026) was read on the vendor's own pricing page; others are described without a number because we could not verify one.

An automated investing service that manages accounts held at your existing broker, so you do not move money.

How it works: There is no new account to open: you link an existing brokerage account at a supported custodian and SigFig manages it in place, rebalancing and running tax-efficient strategies. Below a stated balance the management is free. This structure is unusual: nearly every competitor requires custody of your assets.

In practice, SigFig’s AI automates a portfolio in accounts you already hold. It is a robo-advisor (hands-off automated investing), best suited to automation that manages your existing Schwab or Fidelity account. On connecting an account: yes, it manages accounts held at supported brokers. On execution: automated. Cost: up to 0.50%/yr, $2,000 minimum (Oct 2026).

One real limitation: Supported custodians are limited, so it only works if your account is already at one of them.

A portfolio analytics platform with proprietary stock scores, portfolio simulation and dividend tracking for self-directed investors.

How it works: You connect or enter your holdings and Ziggma analyses the portfolio for exposure, risk and dividend income, scoring individual stocks on fundamental factors. A simulator lets you test how adding or removing a position would change the whole portfolio before you do it, which is the feature most portfolio trackers lack.

In practice, Ziggma’s AI scores stocks and analyses portfolio construction. It is an AI stock research and scoring tool, best suited to portfolio analytics and stock scoring for self-directed investors. On connecting an account: yes, for tracking. On execution: no. Cost: free plan; paid $9.99 to $19.99 a month (Oct 2026).

One real limitation: Analysis and simulation only; it cannot place an order, so acting on anything means going back to your broker.

Category comes first. SigFig focuses on automation that manages your existing Schwab or Fidelity account (automates a portfolio in accounts you already hold), and Ziggma on portfolio analytics and stock scoring for self-directed investors (scores stocks and analyses portfolio construction). On broker connection they differ too: SigFig is “Yes, it manages accounts held at supported brokers” versus Ziggma at “Yes, for tracking”. That shapes everything downstream: how personal the answers are, where trades settle, and how much control you keep over individual positions.

Every tool gives something up for what it does well. Below is the give-and-take on each, so you can weigh the specific strengths against the limitations that come with them, beyond the headline category.

For AI investing tools, the distinction that matters most is whether the tool works from your actual, connected positions or reasons from something else: a separate account it manages for you, or the tickers and numbers you feed it. It decides how personal the answers can be, and where your money physically lives.

• SigFig: connects specific supported accounts. SigFig connects a defined set of accounts (Yes, it manages accounts held at supported brokers), so whether it can see your holdings depends on whether your money is at one of them.
• Ziggma: reads your real connected holdings. Ziggma connects your real brokerage (Yes, for tracking) and works from your actual positions, so its answers reflect what you actually own.

This is where they diverge most. One works from your real, connected account while the other does not, so if you want an assistant grounded in the exact positions you already hold, that gap is the thing to weigh first. This holdings-aware angle is the one Walnut is built around: it connects the brokerage you already use and reasons from your live positions, read-only by default, with any trades left for you to approve.

Each one wins a different job, so the answer depends on which job you need done.

• Choose SigFig if you want automation that manages your existing Schwab or Fidelity account. Its AI automates a portfolio in accounts you already hold, and it costs up to 0.50%/yr, $2,000 minimum (Oct 2026). It is built for someone with an existing account at a supported broker who wants it managed without moving anything. Keep in mind: supported custodians are limited, so it only works if your account is already at one of them.
• Choose Ziggma if you want portfolio analytics and stock scoring for self-directed investors. Its AI scores stocks and analyses portfolio construction, and it costs free plan; paid $9.99 to $19.99 a month (Oct 2026). It is built for a self-directed long-term investor who wants to understand portfolio-level effects before adding a position. Keep in mind: analysis and simulation only; it cannot place an order, so acting on anything means going back to your broker.
• Choose Walnut if you want a keep, trim or exit read on the stocks you already own, and placing the trades you approve. It is an AI investing app that connects the broker you already use, and it costs free; Walnut Plus $9.99/mo on the web; no fee on assets.

Because they sit in different categories, this is not strictly either-or: some investors use one for automation that manages your existing Schwab or Fidelity account and the other for portfolio analytics and stock scoring for self-directed investors, and watch for overlapping costs.

Cost is easy to misread when two tools charge in different shapes, so compare the model, not just the number. SigFig: up to 0.50%/yr, $2,000 minimum (Oct 2026). Ziggma: free plan; paid $9.99 to $19.99 a month (Oct 2026). A percentage-of-assets fee scales with your balance, a flat subscription does not, and a “free” tier usually earns elsewhere (on cash, order flow, or premium upgrades), so the cheapest headline is not always the cheapest outcome for your situation.

Prices checked October 2026. Pricing and tiers change, so confirm the current numbers on each provider’s own site before you decide.

Walnut is an AI investing app, and it is the pick for a keep, trim or exit read on the stocks you already own, and placing the trades you approve (free; Walnut Plus $9.99/mo on the web; no fee on assets). It connects the brokerage you already use, read-only by default, gives each holding a keep, trim or exit read against the S&P 500, flags any position above a quarter of the portfolio, and places the trades you approve. You use it through its own assistant, or inside Claude or ChatGPT. See Walnut vs SigFig and Walnut vs Ziggma.