Verdetto

Verdetto reads QR codes and barcodes and shows you what is in them before you act. Free, no ads.

Every code. QR, EAN and UPC, ISBN, Data Matrix, PDF417, Aztec, Code 128 and 39, postal barcodes, GS1 packs, vehicle numbers, boarding passes, driver's licenses.

Checks on your phone. Hidden sign-ins, raw IP addresses, lookalike names, shortened and affiliate links, unencrypted addresses, unusual ports, downloads, script addresses, tracking and affiliate parameters, and a warning list of known phishing, scam, and sanctions entries kept on the phone, built from public sources. The result is one line: Danger, Caution, or No warnings found. No warnings found means none of the checks matched; whether to open is your decision.

Stays on your phone. Frames are scanned on the device and dropped. No accounts, no analytics. History stays on your phone and clears when you say; a private session writes nothing to History. Licenses, boarding passes, and health certificates are read on the phone, shown once, and never kept. The app never looks a person up.

Looks things up only when you allow it. Open Food Facts, Open Library, the German and French national libraries, openFDA, MusicBrainz, Wikidata, the NHTSA vehicle database, and the EPA fuel-economy database. Each source receives only what that lookup needs: the number or address you scanned, with the app's name, version and support address, and, as with any connection, your IP address. One switch turns online lookups off and product lookups have a switch of their own; with online off, no lookups run and every built-in check still works. Scan a VIN: make, model, engine, recall campaigns, crash-test ratings, and fuel economy, from the US government's own databases.

Made for the hand. Quick Settings tile, batch mode, left-handed layout, results read aloud, a boarding pass at the gate, your own codes. Eleven languages. Light, dark or pure black, with the accent you choose: teal, a quiet seasonal color around the holidays where you live, your wallpaper's colors on Android 12 and later, or one of the five seasonal sets kept all year. Warnings keep their colors.

Paid for and passed on by the people who use it. A contribution, once or monthly, keeps it free for everyone. Nothing is locked behind it. It never nags: no ads, no pop-ups, no rating prompts. After it does something for you, it may say thank you, at most once a month; one switch turns that off.

The safety list is open source today; the app's code (GNU GPL) and its scanner core (Apache 2.0) follow with the first release. The checks are limited by design and no check catches every scam; the full wording is under Terms of use in the app. Verdetto is made by a solo developer in Virginia.