The Short Answer
Cydia doesn't exist on modern iPads. Not because Apple removed it from the App Store, but because the jailbreak exploits that made it possible stopped working around iOS 12 or so. If you're trying to figure out How To Get Cydia On iPad, you first need to figure out what iOS version your device is running, because that single number determines whether this is even possible. Here's the method that actually works for the small window of devices it still supports. First, check your iOS version in Settings > General > About. If you're on iOS 12.4.5 or below on an A12 chip device (like the iPad Pro 2018 or original iPad Air 3rd gen), you might have a shot. That's where the Palera1n exploit lands. If you're on iOS 13 or later, you're basically out of luck for now. That's it. That's the gatekeeper. Palera1n is a bootrom exploit that works on A5 through A11 devices, which covers a surprising number of older iPads. The jailbreak itself is semi-tethered, meaning every time you reboot your iPad you have to run the exploit again. It's not permanent. I spent about forty-five minutes on my first attempt, mostly wrestling with the connection because my USB-C to Lightning cable was charging my device instead of actually transferring data. You want a data-capable cable, not just any cable that fits. I found that out the hard way when nothing happened after three failed attempts.
The actual process runs from a macOS or Linux computer. You download the Palera1n binary, put your iPad into DFU mode by holding specific buttons at specific times (the timing matters, and missing it means starting over), and the tool does the rest. Once it's done, Cydia appears on your home screen. Reboots require reconnecting to the computer and running the tool again, usually taking two to three minutes each time. I kept forgetting this and got annoyed about it after my third unscheduled restart in a week.
What You're Actually Getting
Cydia is a third-party package manager for jailbroken iOS devices. It lets you install tweaks and apps that the App Store doesn't allow. Things like custom themes, ad blockers at the system level, Call+ for caller ID, or full keyboard customization. These modifications touch system-level files, which means they can conflict with each other or break entirely after an iOS update. You're trading stability for flexibility. Everyone knows this, but it bears repeating because people don't always believe it until something stops working. The repositories you'd add to Cydia are community-maintained and not vetted by anyone with actual quality control. This is why you should never blindly install random packages. I once added a third-party repo on a whim and installed a tweak that conflicted with my display settings. The result was a boot loop that required a full restore through Finder. Took me about an hour to fix, and most of that hour was spent feeling dumb.
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Things People Miss
The biggest misconception is that jailbreaking voids your warranty in a way that matters today. Apple can't actually tell if your device is jailbroken just by looking at it, because a semi-tethered jailbreak like Palera1n leaves no persistent trace after a reboot. What they can detect is a failed boot or restore anomalies, but simply having a jailbreak isn't flagrant evidence. Still, if you're on a newer iPad and something breaks, presenting it as "the iPad broke normally" rather than mentioning the jailbreak is the pragmatic choice. Another thing nobody warns you about: battery life. Tweaks that run in the background consume power. A decently tweaked iPad on Palera1n will noticeably drain faster than a clean installation. I was averaging maybe ten hours of screen-on time on a clean iPad Pro, and after adding a handful of tweaks it dropped to around seven. Not catastrophic, but enough that you'll notice if you use your device heavily throughout the day.
The Reality Check
If you have an M-series iPad, an A14 or newer chip, or anything running iOS 13+, this guide is irrelevant to you. There is no workaround. The bootrom vulnerabilities that Palera1n exploits were patched in those chips. No amount of software manipulation changes that. Your options are essentially to keep your current iOS version (which locks you out of future updates if you want to stay jailbroken), or to wait for a future exploit that may or may not come. Sometimes these things appear within months. Sometimes it's years. I've seen both. The other option that doesn't involve jailbreaking at all is just using the App Store. It's limiting compared to what Cydia offers, but it doesn't brick your device or require a computer every time you restart. For most people, that's the better path. I'm not saying that to be preachy. I'm saying it because I've watched enough people lose access to banking apps, iMessage, and sometimes their entire device trying to chase features that aren't worth the headache. If you're set on going through with it and you're in the compatible window, the Palera1n GitHub page is where you go. No third-party tools, no sketchy download sites. Anything offering a one-click Cydia installer for modern iOS is a scam or malware. I've seen this pattern repeat across every forum and subreddit, and it never gets old.