Unfortunately I have not found an app that can do what you need. I would love to have one as well. My solution was recording my iPhone through QuickTime and doing the editing on my Mac. This will work on PC's as well, you will just require QuickTime for Windows or a similar app. This works well for me and I find it to be a good workaround until an app like you or I require becomes available. Hope this will help you. Here is the process:
QuickTime Player
This option is what I recommend to record iPhone screen or iPad screen. All your need is:
- An iOS device running iOS 8 or later.
- A Mac running OS X Yosemite or later.
- Lightning cable.
Here are the steps to do it:
- Connect your iPhone or iPad to your Mac via the lightning cable.
- Open QuickTime player.
- Click File then select ‘New Movie Recording’
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- A recording window will appear. Click the little arrow of the drop down menu in front of the record button, then select your iPhone or iPad
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- Select the Mic of your iPhone if you want to record music/sound effects
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- Click the Record button. Now perform the tasks on your iOS device that you want to record
- Once done tap the stop button and save the video.
Tip: by hitting Cmd + T you’ll be able to directly trim your video before saving it, so you only keep the relevant part of the recording.