YouTube++ is an Apple iOS app that can be used as a replacement for Vanced. YouTube++ is a modified version of YouTube. It does not have all the features Youtube Vanced iOS offers.
YouTube++, however, is the best YouTube Vanced iOS alternative considering its features.

Youtube Vanced iOS: How to Download & Install

YouTube++ Features:

• Download videos to the camera roll
• Block all Ads
• Background Playback
• Change playback speed (0.5x-2.0x).
• Videos of Auto Repeat
• Age restrictions are disabled
• Forward/Rewind Controls
• Change the default playback quality
• Mobile Data: Enable HD Playback
• Audio Player for Downloaded Video
• Convert Audio and Video
• The default tab will be displayed when you launch the app

YouTube++: Download and install

For Non-Jailbroken Devices

YouTube++ cannot be installed on a device that is not jailbroken. You will need a sideload utility like Cydia Impactor, or AltStore.
Follow these instructions to sideload YouTube++ using the AltStore.

1. First, remove the original YouTube app.
2. AltStore can be downloaded and installed on your iPhone or Mac/Windows computer.
3. Open the Safari browser on your device to download YouTube++ IPA files. Download the IPA file from here.
4. After downloading the IPA file, open AltStore and navigate to My App at the bottom.
5. To add a new application, press the + icon in the upper left corner. The list of all IPAs that Safari has downloaded will appear. Click on the YouTube++ IPA files that you downloaded in step 1.
6. AltStore will begin installing the app. The process takes only a few minutes. After installation is complete, YouTube++ will be displayed on the My Apps tab. You can also open it from your Home Screen.

If you receive an error message that says “AltStore server could not be found”, then connect your device with the lightning cable to the computer and try installing YouTube++ again.

For Jailbroken Devices

This guide will help you install YouTube++ on a jailbroken device.

1. Open Cydia on your device.
2. Navigate to Sources tab.
3. Click Edit > Add
4. Enter the following Cydia repo: https://beta.unlimapps.com
5. Refresh Cydia to search YouTube++
6. It is easy to install.