GrabCAD

It’s an app-community where amateur or even experienced engineers can upload and download models from CAD library. You can take pictures of your drawing and upload them for review just with your Android/ iPhone device.

Engineering Unit Converter

Consuming as low as 1MB space, it has hit a whopping 100,000 installs and satisfied customer feedback. If you find a unit missing, just write it to them and they’ll update the app adding the same unit. It’s only for Android users.

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