What works today.
What we’re building next.

Live now

• Data Desk (Pro)

  A running measurement dashboard inside the app: live all-in cost board, the asset × venue matrix, hourly cost and spread series, cheapest-venue rotation, reliability drift and the sourced incident tape — every tile carrying its measurement age, its provenance class and a "how measured" note. Pro exports every series as CSV with its methodology header. Own measurements only; market context stays attributed and is never resold.

• True-Cost live comparison →

  Every exchange returning fresh data, fee + live orderbook spread + withdrawal, ranked by what you actually receive. No login.

• Per-asset & head-to-head pages →

  Eight assets and every venue pair (Binance vs Kraken, …) — published fees next to measured cost.

• Watch-only portfolio

  Paste public wallet addresses, get one USD view (EUR alongside) across the major EVM chains, Bitcoin and Solana (SOL + SPL tokens). Read-only, always.

• Reliability Score →

  A sourced, dated reliability rating for every covered exchange — withdrawal incidents, proof of reserves, regulatory standing, security history. Methodology public, never paid for.

• Fee check — the on-chain receipt →

  Paste an Ethereum address: gas paid this year plus the DEX-trade share, measured from public chain data. Shareable, no login, nothing stored under your name.

• Swap comparison — the DEX leg →

  One live LiFi-aggregated route per pair (ETH, WBTC, USDC, USDT, DAI on Ethereum): expected and minimum received, hidden spread vs the same reference, gas priced in. Keyless, no affiliate.

• Embeddable live widget →

  The top-5 True-Cost table for your own blog or forum post: one script tag or a plain iframe, live data, 60-second refresh.

• Public data status →

  Per-exchange feed freshness and active accuracy suppressions, live — when our data degrades, you see it before you have to ask.

• The True-Cost Index — original research →

  A monthly report of what a €1,000 buy actually cost across the exchanges — fee plus the hidden order-book spread, sampled hourly. The systematic measurement nobody else publishes; same engine as the live page, so the press numbers can never drift from it.

• Exchange accounts, read-only

  Connect exchange balances with API keys we validate as read-only before storing — and re-check every seven days. Keys that could trade are rejected; order methods are blocked in code.

• Portfolio preview — no account →

  Paste one public address, see its USD value (EUR alongside) across the major EVM chains. Ephemeral by design: computed, shown, forgotten.

• Value history & cost history

  Hourly portfolio snapshots draw your value over time (Free keeps 7 days, Pro a year), and the measured all-in cost per venue becomes a queryable daily series.

• Price & reliability alerts, weekly digest

  Email when a price you set is crossed, when the Reliability Score of one of your venues drops materially, and a Monday digest of your week. You configure it; an alert states a fact, never a recommendation.

• Trade activity & fee-leakage

  Your imported exchange trades (EUR, USDT and USDC pairs — stablecoins at the measured daily rate) in one view, with a conservative (~) estimate of what they cost versus the cheapest venue.

• Move check (v1) →

  The cheapest way off an exchange: the published withdrawal fee per network next to what actually arrives after an optional bridge leg — two honest numbers per route, ranked by the net units you keep. v1 covers BTC and ETH — native chains across the majors, ETH to Arbitrum One where the exchange publishes a verifiable number, bridge quotes via LiFi. Reliability shown as context, never inside the ranking.

• Public API docs + MCP server →

  The same engine numbers as a public read-only REST API and an MCP server for agents — no key, no account. The website and the API serve one in-process engine, so an agent can never read a figure that has drifted from the live page. Every response carries its data age and a disclaimer; ranking is never affiliate-influenced.

In build

• DeFi positions

  On-chain DeFi — lending, liquidity, staking and borrows — joined into the same EUR view via Zerion, deduplicated against your wallet tokens and netted (debt subtracts, never adds). Built and verified against live protocol positions; rolling out through a closed beta behind a feature flag. Read-only, like the rest.

• Convert-markup measurement

  First curated warnings are live on Coinbase and Kraken rows (sourced typical ranges). In build: systematic, measured convert quotes across all venues — publishable original research.

• Active intelligence (Trader)

  Signals on the assets you hold: large on-chain whale transfers (Ethereum, v1) and documented token-fact changes attributed to a data provider — each delivered as a dated, sourced fact, never a recommendation, never a verdict. The engine is built and tested behind a feature flag; it goes live with the Trader plan. Ranking is never influenced, because there is no ranking.

Next

• Move check — wider matrix

  More assets (USDT, USDC), more chains (Optimism, Base, Polygon, Solana, Tron) and more venues in the move comparison — each row added only once the fee is verifiable from an official source. The v1 check is live today.

• KOL signals & trade journal

  A sourced view of what the accounts you follow are saying, and an AI journal that reflects on your own past trades. (Whale + token-event signals are in build now.) KOL coverage waits on a licensed data source; the journal ships with its own guardrails.