Owlio shows what you actually hold — across Ethereum and its L2s, BNB Smart Chain, Bitcoin, Tron and TON — in a Chrome side panel that stays open while you browse.
Free. Open about what it does not know. Nothing to sign up for.
The side panel, at the width it actually opens. The wallet shown is
vitalik.eth — a public address, not ours.
No account, no sign-in, no database. Your addresses and your portfolio live in this browser's storage and nowhere else, because there is nowhere else for them to go. That is not a privacy setting you can weaken — it is how the product is built.
What that costs, said plainly: to show a balance, Owlio asks public blockchain explorers about your address, straight from your browser. Those explorers see the address they are asked about. That is unavoidable for any wallet tracker, and every host Owlio can contact is listed by name in the privacy policy.
What Owlio does not do: no analytics, no telemetry, no crash reporting, no advertising, no remote code, and no request that reveals which assets you hold — prices are fetched for the whole built-in asset table, the same list for every user.
Add an address once; every network that address is valid on is read automatically.
Separate tabs, each honest about what it knows. An unverified token never gets a price tag.
A portfolio chart with 1W / 1M / 1Y / All, and a “what if I had just held BTC” benchmark line over it.
Downloaded in the background, so the chart reaches further back the longer Owlio runs.
Public explorers go down. When one does, Owlio names the network it could not read instead of quietly showing you less.
One tap hides every number, for when someone is looking over your shoulder.
Your setup is a file you control. Wipe everything in two clicks — there is no copy anywhere else.
The interface follows your browser: English, Русский, Deutsch, Español, Français, 日本語, हिन्दी, Bahasa Indonesia, Português (BR), العربية.
One address covers every network it is valid on — add an Ethereum-style wallet once and all eleven EVM networks below are read for it.
Owlio