: Be cautious when purchasing software or license keys from third-party sellers. Some may offer legitimate products, but others might not. Ensure you're buying from a reputable source to avoid counterfeit software or scams.

It includes built-in stencils for modern desktop and mobile user interfaces, making it a direct alternative to OmniGraffle’s mockup tools. 3. Inkscape Cost: Free and open-source. Platform: macOS, Windows, and Linux. Best For: Vector graphics and precise layouts.

That being said, here's a review of OmniGraffle 7: