Credits

Special thanks to these developer(s) for maintaining and improving YouTubeRebornPlus!

Special thanks to all the developers who have orignally contributed to YouTube Reborn & CercubePlus!

Features

Block all advertisements, Enable background playback & etc. (Video Options)
Set default player quality on WiFi & Celullar.
Tons of Options such as Video Options, Overlay Options, Tab Bar Options, PiP Options, Shorts Options & etc.
Customize the background color of Dark/Light theme. (Colour Options)
Download videos in high resolution, also download videos as audio-only.
And many more...

iSponsorBlock: Skips annoying sponsor ads inside videos. iSponsorBlock is based on SponsorBlock engine. Basically, this is the iOS version of the SponsorBlock extension.
YouPiP: enable YouTube's native PiP. More options are in YouTube Settings => General.
YTUHD: unlock VP9 codec and in effect, enables video quality of 2K and 4K. You can configure YTUHD in YouTube's Settings - Video quality preferences.
YouTube Dislike Return: brings back Dislike counts under YouTube videos using ReturnYoutubeDislike's API.

and many more...!

YTClassicVideoQuality: since YouTube v16.xx, you need one more step to change the video quality. YTClassicVideoQuality brings back the old video quality selector, which is a lot better than the new one.
YTNoHoverCards: offer an option to enable/disable the annoying suggested videos show up at the end of the videos.
YTABGoodies: allow you to disable some YouTube A/B testing features. It is a combination of several tweaks, such as:

YouAreThere: disable "Video paused. Continue watching?" popup in the YouTube app when you play a long video.
YouRememberCaption: make YouTube remember your video caption setting (if not already).
YTNoCheckLocalNetwork: block the Local Network permission popup.

NOYTPremium: remove YouTube Premium upsell alerts.
YTSpeed: a toggleable tweak to add 2.25x, 2.5x, 2.75x, 3x, 3.25x, 3.5x, 3.75x, 4x & 5x playback speed options in the video player.
YTMiniplayerEnabler: enable Miniplayer for all YouTube videos.
DontEatMyContent: prevent the notch/Dynamic Island from munching on 2:1 video content in YouTube.
YTShortsProgress: always enable progress bar and scrubbing in YouTube Shorts (iPhone only).
YTABConfig: allow user to control over YouTube A/B testing flags.
YouMute: Mute/unmute videos in the YouTube Video Player directly.
YTNoCommunityPosts: this can disable all the Community Posts on the YouTube app.
LowContrastMode: makes the YouTube Interface Low Contrast as possible to make it easier on the eyes.

any many more...

Downloading videos/audio not working. (probably a Client-Side change, don't know why this happened.)

LowContrastMode: this tweak doesn't work correctly with the ui on v17.39.4 or later versions of the YouTube App. [WORKAROUND - go to Settings > YouTubeRebornPlus > Miscellaneous > Enable App Version Spoofer and go to Version Spoofer Picker and select v17.38.10]
YTSpeed: this tweak doesn't show playback speed controls in the v18.19.1 or later versions of the YouTube App. [WORKAROUND - go to Settings > YouTubeRebornPlus > Miscellaneous > Enable App Version Spoofer and go to Version Spoofer Picker and select v18.18.2]
YTClassicVideoQuality: this tweak that shows the old video quality menu has stopped working on v18.19.1 or later versions of the YouTube App. [WORKAROUND - read YTSpeed's workaround above]
YTUHD: Stuttering on 4K videos.
YouPiP (iOS 14.0 - 14.4.2): due to Apple's fault, you may encounter the speedup-bug as described here. The bug also happens when you try to play multi-sources of sound at the same time. Enable LegacyPiP is a workaround. Keep in mind that LegacyPiP also removes UHD quality and breaks YouTube Autoplay next. Use it at your own risk!
Not a bug:

The app won't be able to receive push notifications if you use a free developer account to sideload it.
It's impossible to fix deep-link (a.k.a Open in the YouTube app). However, you can use this Shortcuts as a workaround (tested on iOS 14). Credit: RandomAccessMemories#5025

YouTubeRebornPlus (or you can call it YouTubeReborn+) requires iOS & iPadOS 14.0 and later. The latest version of YouTubeRebornPlus can be found in the Release tab.
The latest version of YouTubeRebornPlus can be found under Releases.
Compatibility: Requires iOS/iPadOS 14.0 or later.
For AltStore user:
- My official AltStore repo: https://therealfoxster.github.io/altsource-viewer/view/?source=https://raw.githubusercontent.com/arichornlover/arichornlover.github.io/main/apps2.json
Open in AltStore (v19.10.5-4.2.6) - It will take a while to install because AltStore needs to download the IPA first.

Version information (last updated: Mar 18, 2024)

Tweaks/App	Developer	Version	Open source
YouTube	Google Inc	19.10.5	✖︎
YouTube Reborn	LillieH1000 & arichornlover	4.2.6	✔︎
Open in YouTube	CokePokes	1.2	✖︎
YTNoShorts	MiRO92	1.0.2	✔︎
YTNoCommunityPosts	michael-winay	0.0.2	✔︎
iSponsorBlock	Galactic-Dev	1.2.2	✔︎
BigYTMiniPlayer	Galactic-Dev	1.0-1	✔︎
YTNoHoverCards	level3tjg	0.0.3	✔︎
YTMiniplayerEnabler	level3tjg	0.0.2	✔︎
DontEatMyContent	therealFoxster	1.1.3	✔︎
YTSpeed	Lyvendia	1.0.1	✔︎
Alderis Color Picker	HASHBANG Productions	1.2	✔︎
YTUHD	PoomSmart	1.4.3	✔︎
YouPiP	PoomSmart	1.8.4	✔︎
IAmYouTube	PoomSmart	1.3.0	✔︎
YTABConfig	PoomSmart	1.7.0	✔︎
YTReExplore	PoomSmart	1.0.2	✔︎
NoYTPremium	PoomSmart	1.0.4	✔︎
YTNoPaidPromo	PoomSmart	1.0.0	✔︎
YouRememberCaption	PoomSmart	1.0.0	✔︎
Return YouTube Dislike	PoomSmart	1.11.6	✔︎
YouMute	PoomSmart	1.2.1-3	✔︎
YouQuality	PoomSmart	1.1.4-2	✔︎
YTVideoOverlay	PoomSmart	1.1.6	✔︎
YTHoldForSpeed	joshuaseltzer	1.2.0	✔︎
LowContrastMode	arichorn	1.4.2	✔︎