QR Scevio Support

Common questions and fixes are below. If none of them cover your problem, email support@vguliakin.dev and describe what you were doing and what happened. Please do not send the contents of a QR code you are worried about unless you are comfortable sharing it.

The camera isn’t working

QR Scevio needs camera permission to scan. If the scanner shows a permission message, or the preview stays black:

Open the iOS Settings app.
Go to Privacy & Security → Camera and make sure QR Scevio is switched on. You can also reach the same switch from Settings → QR Scevio.
Return to QR Scevio. If the preview is still black, close the app fully and reopen it.

The app also offers an Open Settings shortcut in the permission alert, which takes you straight there.

If another app is using the camera at the same time — a video call, for example — end that first. On a device with no usable camera, QR Scevio says so and you can still scan from your photo library.

A QR code isn’t being detected

Move the phone closer or further away. Very small codes need to fill more of the frame; very large ones need distance.
Hold steady for a moment and give autofocus time to settle.
Add light. QR detection struggles in dim rooms and against strong glare, especially on glossy paper or a screen.
Check the code itself. Torn, folded, faded, obscured or partially covered codes may not be readable at all.
If the code is on a screen or in an image, take a screenshot or save the picture, then use the photo button in the scanner to pick it. This uses the same on-device detection without the camera.

QR Scevio reads QR codes. It does not read barcodes, Data Matrix or other symbologies.

There are several codes in the frame

When more than one QR code is visible, QR Scevio does not guess. It numbers each code it can see and waits for you to tap the number you meant. If more than four codes are in view it asks you to point at four or fewer and try again. The same numbered choice appears when a photo you pick contains multiple codes.

Opening links

QR Scevio deliberately never opens anything automatically. Scanning a code takes you to a result screen showing the destination host, the full link and the checks the app ran on the device. From there you choose to open, copy, share or save it.

No local warnings found — the on-device checks found nothing to flag. Tapping Open Link hands the link to your browser. This is not a judgement about the site itself; the app cannot see the site’s content.
Caution — something is worth a look first, such as a link that does not request HTTPS, points at a private network address, or uses a shortener. Opening takes a second, deliberate confirmation.
High risk — the app asks you to confirm the host by name before it will open anything.

Phone numbers, email addresses and other non-web content are handed to the matching app only after you confirm. Wi‑Fi passwords stay hidden until you choose to reveal them, and are never stored.

QR Scevio does not follow redirects or contact the link during inspection, so it cannot tell you where a shortened link ultimately lands. It says so on screen rather than guessing.

Tracking parameters were removed

By default QR Scevio strips common tracking parameters — anything starting with utm_, plus fbclid, gclid, dclid and msclkid — and lists which ones it removed. The open button changes to Open Sanitized Link so it is clear what will open.

If a link needs those parameters to work, turn the behaviour off under Settings → Scanning → Remove Tracking Parameters and scan again.

History and Saved

History is automatic. Web links you scan are recorded for up to 30 days or 500 scans, whichever comes first, then removed automatically. Swipe an entry to delete it, or use Settings → Privacy → Clear Scan History to remove all of it. You can stop it being recorded at all with the Scan History switch in the same section.
Saved is deliberate. Tap the bookmark on a result to keep it. Saved links stay until you delete them, and you can give them a name, tags and a pin to sort them. The Recheck action re-runs the same on-device inspection on a saved link.

Clearing history never touches saved links — the confirmation says so.

Only web links are ever stored. Wi‑Fi credentials, contact cards, phone numbers, email addresses and plain text are not written to either list.

A result said it wasn’t stored

That is intentional. Before saving anything, QR Scevio screens the link, and refuses to store it if it contains a password, an authentication token, a session key, an email address or a login or verification code. The result stays fully usable on screen — it just is not written to disk. There is no way to override this, and that is the point.

What QR Scevio does not do

Being clear about the limits matters more than the feature list:

It does not connect to the internet, so it cannot check a link against any online service, and it cannot tell you whether a site is trustworthy.
It does not follow redirects or expand shortened links.
It does not scan the page you open, and it has no say in what happens once your browser takes over.
It has no account, no sync, and no way to move your history or saved links between devices, other than a device backup.

A result of “no local warnings found” means the checks the app can run on the device found nothing to flag. It is never a guarantee about the destination.

Requirements

iPhone running iOS 17.0 or later.
A working camera for live scanning, or photos containing QR codes.
No internet connection is needed. The app works in airplane mode.

Privacy

QR Scevio collects nothing and sends nothing. The full details are on the privacy policy page, and a summary is available in the app under Settings → App → Privacy Policy.

Contact

Email support@vguliakin.dev. Include your iPhone model and iOS version if you are reporting something that looks like a bug — the app collects no diagnostics, so a description from you is all there is to go on.