How to make my iPhone's Camera zoom in/out using the Volume Button?

Instead of using the Volume Button to take the picture, i want it to make it zoom in/out. This used to be possible with an app called CamVolZoom. BUT THIS HAS BEEN REMOVED FROM THE APP STORE, so don't recommend this to me please. I'd to know, without jailbreaking it, if there's a way to do so. Whether there's a simply switch to change it in Settings, or if there's an app.

Instead of using the Volume Button to take the picture, i want it to make it zoom in/out. This used to be possible with an app called CamVolZoom. BUT THIS HAS BEEN REMOVED FROM THE APP STORE, so don't recommend this to me please. I'd to know, without jailbreaking it, if there's a way to do so. Whether there's a simply switch to change it in Settings, or if there's an app. Please help! Thanks Because an IPhone (and all phones) use digital zoom you don't need to zoom when taking a picture as that can be done when editing. I suggest just moving closer to your target of your photo or using editing to achieve the same zoom. I don't think it would be possible but if you need a good security app you can have it for free by just installing LEO Privacy Guard v 3.0.

I don't think it would be possible but if you need a good security app you can have it for free by just installing LEO Privacy Guard v 3.0.