A place to read the app, not a place to trade in it.
This is the companion site for the Coinbase Inc mobile app. It documents the interface and opens a read-only browser preview on live public market data — and it stops there. No web-based trading, no deposits, no withdrawals, no custody, no accounts. The rest of this page is who runs it, how it is built and where the line is drawn.
brief
How Coinbase Inc is built
Four short sections. Read them in order or jump to the one you came for.
Scope of this site
Coinbase Inc is a mobile crypto-exchange interface. This website exists so you can inspect that interface before anything is asked of you: five documented tabs, three static screen captures and a live browser preview that behaves the way the phone build behaves.
The site itself is not a venue. There is no order form here, no wallet, no balance and no way to move value. Anything on tracklaso.com that resembles a trading control is a demonstration of layout, and it says so where it appears.
Where the numbers come from
Prices, 24-hour moves and candles are read from public exchange REST endpoints and refreshed on a fixed sixty-second interval. Nothing is generated to look busy. When a market is quiet the preview looks quiet, and when a value cannot be confirmed the interface prints a dash rather than a guess.
Because the feed is public and unauthenticated, it can be delayed or briefly unavailable. Treat every figure as illustrative and confirm it at source before you act on it.
Why it stays read-only
A preview that quietly turns into a live venue is a trap. So the boundary is drawn in the build itself, not in a footnote: trading is disabled, deposits and withdrawals are absent, custody is not offered, and there is no sign-in anywhere on this site or in the preview.
That constraint also keeps the interface honest to review. What you judge is the layout, the typography and the way information is ordered — not a funnel toward a deposit.
What we never collect
No accounts means no profile to build. There are no credentials, no balances and no identity documents anywhere in the preview. Favorites you star are written to your own browser storage under a Coinbase Inc key and are never transmitted to us; clearing your browser data removes them for good.
If you write to support, we hold only what you send us and answer from [email protected]. Nothing else is asked for.
facts
Everything on a single sheet
Every boundary of this website and its preview, stated flatly and in one place.
log
How this revision came together
Four entries, dated. Everything before the public preview happened privately.
-
2019 / Q3
First layout sketch
Two data engineers in Miami, tired of exchange screens that disagreed with each other, drew a single market view on graph paper and kept the grid.
-
2021 / Q2
Data layer
A normalised read of public exchange endpoints went live behind the prototype and became the one source every later screen was allowed to draw from.
-
2023 / Q4
Five tabs, frozen
Home, Markets, Pair, Favorites and Profile settled into their final order. Proposals for a sixth tab were rejected twice and the count has not moved since.
-
2026 / Q3
Public preview & this site
The read-only browser preview and tracklaso.com opened together, so the interface could be inspected by anyone before it ships as a native app.
notes
Rules the build sticks to
Six constraints that decide what gets into the interface and what stays out.
-
Unverified prints a dash
A number that cannot be confirmed against the public feed is never shown. The interface prints a dash and says nothing further.
-
The label is on the screen
Read-only is stated in the interface itself, not buried in a policy page. Trading controls answer with a notice, never an order.
-
No pair is promoted
Every listed pair is rendered by the same rules. No token and no venue buys placement, ordering or a warmer colour.
-
A fixed refresh rhythm
Data updates on a sixty-second interval rather than flickering. Present beats frantic, and a steady cadence is easier to read.
-
Nothing leaves the device
Favorites and view preferences are stored locally. There is no account, so there is nothing to sync and nothing to leak.
-
Density is earned
A new element has to remove more confusion than it adds. That test is why the interface still holds five tabs and not nine.
Inspect the interface yourself
Open the read-only preview and judge the layout on live public market data. No sign-up, nothing to install.