Stop guessing with napkin math. This pack is a single-page, vanilla-JS toolkit you open in any browser — no signup, no tracking, no wallet required.

Built for people who already think in APYs, leverage, and LP math and want transparent, editable models instead of opaque “signals.”

What’s inside

1. Interactive toolkit (models/index.html)

- HYSA vs T-bill vs DeFi — after-fee, after-tax-ish, with editable rates and an optional DeFi risk haircut

- DCA vs lump-sum — deterministic up/flat/down/volatile paths + optional simple Monte Carlo

- Staking real yield — nominal APY − fees − dilution − inflation

- Liquidation price — leveraged long/short approx (spot, leverage, maintenance margin)

- Impermanent loss — classic 50/50 constant-product IL vs HODL + fee offset field

2. How-to guide (models/guide.md) — interpretation notes and formula assumptions for every calculator

Why this pack

- Works offline — open the HTML anywhere

- Editable inputs — your rates, your fees, your haircuts

- Honest framing — assumptions and disclaimers on every panel; no fabricated backtests claiming alpha

- Premium dark UI, sticky tabs, print/share-friendly single file

Who it’s for

- Crypto / DeFi learners who want cleaner mental models

- Builders and freelancers who explain yield, IL, or leverage to clients

- Anyone comparing cash yield products without treating APY as a safety rating

Who it’s not for

- Anyone seeking personalized investment advice or guaranteed returns

- People who want live market data feeds or automated trading bots

- Buyers expecting historical alpha backtests — this pack refuses that framing on purpose

Delivery

Instant download ZIP after purchase on Getly.

By Marcus Garvey — Educational digital products for Getly, honest models, no fake alpha. Not financial advice.