Sometimes the best ringtones are those that have been recorded directly on the iPhone. What's better than a unique, homemade ringtone that also costs nothing to add to your device? Since the stock iOS audio recording app is Voice Memos, here are instructions on how to convert a voice memo recording into a ringtone.

iOS devices allow you to "markup" photos using Apple's 3 markup tools in the Photos app, under the "Edit" photo settings. You can also markup a photo directly in the Messages app before you send it off to one of your contacts. Here's how to markup or doodle on a photo in the Messages app using iOS 12 or later:

Now there's an easier way to find that random fastener, screw or bolt. Amazon has added a Find Parts feature to the camera search section of its iOS app. By placing the part you need next to a penny and snapping a photo, the iPhone can quickly calculate the length, diameter and other characteristics of the part. Amazon delivers specs, matching, and related parts almost immediately after scanning an existing piece of hardware.

You probably know by now that Apple replaced Touch ID with Face ID on the iPhone X, which uses its True Depth camera to take a 3-D scan of your face rather than a 2-D image of your finger print. The recognition software learns more as it goes and is pretty good at ID-ing you even if your appearance is somewhat altered with a new hairstyle, facial hair, glasses, a different expression or what have you.

Workflow is a tool for iOS that allows you to automate a series of actions. For example, you could create a workflow that creates a GIF from a recording with a simple tap, or quickly add text to a photo and upload it to your favorite social media sites.