At a glance
Killion is planning and simulation software with read-only account linking. Quicken Simplifi is described below in its own terms. Where a figure is quoted it comes from the vendor's published pricing and was checked on the date shown.
| Killion | Quicken Simplifi | |
|---|---|---|
| Individual price | $14/mo, or $11/mo billed annually ($132/yr). Max tier $24/mo or $19/mo annually. | Quicken Simplifi: $3.99/month promotional, $6.99/month standard, billed annually. Web and mobile. From the official pricing comparison page. |
| Free entry point | Live no-signup Monte Carlo demo on a fictional household, plus a 5-day free trial of the full product. Card required for the trial; no charge until it ends. | No permanently free Simplifi plan on the official pricing page. |
| Account linking | Read-only brokerage and crypto linking via SnapTrade. Cash and bank balances are entered manually while automatic bank linking moves to a new provider. | Automatic (or manual) download of checking, savings, credit cards, investments including crypto, 401(k)/IRA, and assets. Official feature list. |
| Simulation method | 1,000-path regime-switching Monte Carlo with fixed seeds, so a run reproduces. | Projected cash flows and balances. Lifetime Planner / what-if retirement roadmaps are listed on Quicken Classic, not as Simplifi’s headline engine. |
| Historical backtesting | Historical backtesting against real market data going back to 1928. | Not a Simplifi feature on the pricing page. |
| Withdrawal rules | Nine named rules: fixed real dollar, fixed percentage, Guyton-Klinger, Vanguard dynamic, endowment smoothing, VPW, CAPE-based, risk-based guardrails, and Merton. | Not a named Simplifi feature. |
| AI assistant | Built-in AI assistant with access to your connected holdings and plan. | Insights, reports and alerts; not an AI copilot on the holdings. |
| Human advice | None. Killion is software; it is not a registered investment adviser. | None. It is a personal-finance app. |
Quicken Simplifi details checked on against the Quicken pricing comparison. Vendors change prices; verify before deciding.
Different jobs
The official Quicken pricing page (checked 15 August 2026) lists Simplifi as the web and mobile product for budgeting, saving and investments, with projected cash flows as the forward-looking feature. Lifetime Planner is listed on Classic. Killion does not try to be a better budget app. It tries to be a better simulation of a decades-long plan.
Account linking
Simplifi’s linking is broad — banks, cards, investments, retirement accounts, crypto, property values. Killion’s linking is narrow and read-only, aimed at feeding a projection. Roundups that name Simplifi “best overall” are usually scoring the everyday-money job. Folding the linking argument into this page is the honest place for it.
Which one to choose
Choose Killion if
- The live question is a retirement horizon, a withdrawal rule and a probability of success.
- You want a stated simulation engine you can cite, not a cash-flow projection.
- You want to try the engine with no signup on the public demo.
Choose Quicken Simplifi if
- You want to know what you have left to spend this month, not in year 32.
- You want bills, subscriptions, refund tracking and a 12-month budget in a mobile app.
- You already live in the Quicken world and want the official web/mobile product at the published annual price.