Support

When you report a problem, it helps a lot if you include the following: the app version, your iOS version and device model, the drawing format (DWG or DXF), the approximate file size, and what you expected to see. Please do not send confidential drawings unless you are comfortable doing so.

Frequently asked questions

Which drawing formats can ViewCAD Pro open?

DWG and DXF — the two main formats used across engineering, architecture and manufacturing.
Other formats such as PDF, DGN or STEP are not supported.

Can I edit, measure or convert drawings in the app?

No. ViewCAD Pro is a viewer. It opens, displays and lets you inspect drawings; it does not modify, edit, measure or convert files.

Does the app need an internet connection?

No. Everything is parsed and rendered on your device, so ViewCAD Pro works fully offline. Your drawings are never uploaded anywhere.

How do I open a drawing someone sent me?

In the app that received the file (Mail, Files, a chat app, a cloud drive), tap Share or Open in and choose ViewCAD Pro. The app opens directly on that drawing — no need to import it first.

How do I open a drawing stored on my device or in the cloud?

On the home screen tap Import Drawing and pick the file from the system file browser. Anything the system file picker can reach — On My iPhone, iCloud Drive, and other file providers — can be opened this way.

A file will not open. What should I check?

Make sure the file is a valid, unencrypted DWG or DXF, and that it was not truncated during transfer. Files above 100 MB are rejected, and very large files may take a while to appear on older devices.
If the file opens elsewhere but not here, please send us the details through Feedback and we will look into it.

My drawing opened, but something looks wrong or missing.

Try the Fit button to frame the whole drawing, and open the Layers panel — some entities may sit on a layer that is currently switched off. Tapping a layer toggles its visibility.

How do I hide or show parts of the drawing?

Open the Layers panel from the toolbar. Every layer is listed with its original colour; tap a layer to turn it on or off. The drawing updates immediately.

How do I see more of the drawing on screen?

The toolbar hides itself a few seconds after you stop interacting, so the drawing fills the screen. Tap the screen to bring it back. Double-tap to fit the drawing, pinch to zoom and drag to pan. Rotate your device for a wider, landscape view.

Where are my screenshots saved?

To your system photo library, and they stay there like any other photo. If the app cannot save, check Settings › ViewCAD Pro › Photos on your device — photo access must be allowed for the screenshot feature.

How do I clear the list of recently opened drawings?

Open Settings › Clear History. This removes the list from your device; it cannot be undone. Deleting the app also removes all of its data.

Is there a subscription?

No. ViewCAD Pro is a one-time purchase: no subscription, no in-app purchases and no recurring charges. All features are included.

Which languages does the app support?

English, Simplified Chinese, Traditional Chinese, Japanese, Korean, Spanish, French, German, Portuguese, Russian and Italian. You can follow your system language or pick one manually in Settings › Language.

How do I report a bug or request a feature?

Use Settings › Feedback. Choose a category, leave a rating if you like, write your message and send it — it reaches us directly by email.

Compatibility

Before you contact us

• Update to the latest version of ViewCAD Pro from the App Store.
• Restart the app: close it from the app switcher and open it again.
• Restart your device if the problem persists.
• Note down the exact steps that led to the problem, and include them in your message.

Privacy

ViewCAD Pro collects no personal data and never uploads your drawings. Read the full Privacy Policy.