The short version: most "free" puzzle games on the App Store are only free if you have a connection, because the free part is the ads, and the ads need wifi or data to load before the game will even let you start a level. If you want something that works in airplane mode, you need to check for offline before you download, not after you're stuck in a departure lounge with no signal. A handful of offline puzzle games do exist and I've tested them.
Free on the App Store rarely means free from the internet
Here's the bit that most download lists skip. Free-to-play puzzle games make their money from ads and in-app purchases, and the ad network needs to phone home before it shows you anything. So a game can say "no purchase necessary, play free" and still refuse to open past the loading screen the second you switch to airplane mode. I've had this happen with three different match-3 games in the space of one month, all of them sitting in the top twenty free games chart at the time.
This isn't a scandal, it's just how the business model works, but it means the App Store's own "offline" tag or the word "free" in the title tells you almost nothing about what happens with no signal. You have to check the actual game, not the marketing around it.
How I tested this on a real flight
Last year I flew from Gatwick to Tel Aviv, five and a half hours, and instead of working the whole way I decided to stress test a batch of puzzle apps I'd downloaded the night before. Fourteen apps, all under the "free" filter, all claiming to be puzzle games. Phone went into airplane mode at takeoff and stayed there.
Nine opened and played without a hitch. Five either froze on a loading spinner, showed a "check your connection" message, or let me play one level and then locked the rest behind a screen asking me to connect. Two of those five I'd paid nothing for and expected nothing from, but two were well reviewed apps with four and a half stars, which tells you star ratings don't measure offline reliability either, because most reviewers write their review while connected to home wifi and never think to test it any other way.
If you want a longer breakdown of exactly which app categories held up across three separate long flights, I wrote up the full results in this piece on offline game apps for iPhone that do not need wifi, and the puzzle apps overlap heavily with what's below.
The puzzle games that worked offline
These are apps I have personally opened in airplane mode and played through, not ones I'm repeating from someone else's list.
- 2048 and its many clones. Tiny download, under 50MB in most versions, plays entirely on the device, no server needed. This is about as close to guaranteed offline as puzzle games get.
- Sudoku.com, the app, not the website. Once the puzzles have loaded the first time on wifi, it caches a stock of them and you can play for hours with no signal. It does show an ad between puzzles when you're connected, but simply skips the ad and carries on if there's no connection.
- Flow Free. Connect the dots, no timer pressure, hundreds of levels stored on the device from install. One of the most reliable offline puzzle games on iPhone full stop.
- Simon Tatham's Puzzle Collection. This one won't show up high in App Store search because it looks basic, but it's a set of thirty-something logic puzzles including Mines, Sixteen, and Slant, built as an open source project and ported to iOS. Zero ads, zero connection needed, ever. If you want proper logic puzzles rather than a match-3 dressed up as one, this is the app.
- Klondike Solitaire from most of the major solitaire publishers. Solitaire is technically a card puzzle and it's the single most reliable offline genre I've tested, because the game logic is so simple there's rarely a reason for it to need a server at all.
- Jigsaw Puzzles - Epic. Downloads a batch of images to your device and lets you play through them without needing to fetch anything new, though I'd suggest downloading a decent stock of puzzles while you're still on wifi rather than relying on it to fetch more mid flight.
Word puzzle fans get their own separate problem, because a lot of word games rely on a server-side dictionary to check your answer, which obviously will not work offline. I've covered which ones store the dictionary locally in this guide to free offline word game apps, and if you're on Android too rather than just iPhone, the word game landscape is different enough that I wrote a separate list for offline word puzzle games on Android.
Looking for multiplayer games you can play offline when there's no wifi? I keep a list that I update. If adverts drive you mad, I've listed free games without ads for Android offline.
Five things to check before you download, not after
You can save yourself the airplane mode disappointment with a five minute check while you're still connected.
Want AI doing the heavy lifting in your marketing?
I build the systems that handle the boring 80 percent, so you get your week back. Done properly, with the human kept in.
- Read the three most recent one and two star reviews, not the top ones. People complaining almost always mention "won't load," "stuck on loading screen," or "needs internet" if that's the actual problem, and recent reviews catch changes the developer made after an update.
- Check the file size. Anything under 150MB is very likely to have its core puzzle content stored on the device rather than streamed. Anything demanding a 500MB plus download for what looks like a simple tile game is usually pulling in a lot of ad tech and analytics code, which is a small hint it needs a connection to function.
- Look at the permissions the app asks for on first open. If it wants location and contacts for a number puzzle game, that's ad targeting infrastructure, and ad infrastructure generally needs a signal.
- Open it once at home, then put your phone in airplane mode and try it before you leave the house. Takes ninety seconds and tells you everything the reviews won't.
- If it's from a big free-to-play publisher like Playrix, Peak, or Zynga, assume it needs a connection for at least some features (leaderboards, daily rewards, extra lives) even if the core puzzle plays offline. Small independent puzzle apps, especially the ones that look a bit dated, are far more likely to be fully self-contained.
Settings to change the moment you download
Two settings cause most of the "why has this stopped working" frustration once you're offline.
- Turn off Background App Refresh for the puzzle apps you plan to use offline, in Settings, then General, then Background App Refresh. Some games try to sync progress or fetch new content the second they detect any signal at all, including a brief airport wifi login screen, and this can trigger the "checking connection" freeze even mid flight.
- Turn off notifications for the same apps. Not essential for offline play, but a lot of free puzzle games send push notifications begging you to come back, and there's nothing worse than three "your energy is full!" alerts landing the second you touch down and your phone reconnects.
- If you're travelling and worried about data charges rather than just being on a plane, switch on airplane mode and then turn wifi back on separately. This keeps mobile data fully off, which is the setting that protects you from a surprise roaming bill, rather than relying on the game itself to behave.
Why this is worth ten minutes of your evening
I run a business, I write for a living, and I still think ten minutes spent setting up two or three offline puzzle apps is worth it. Not because I need distraction, but because a short, low stakes puzzle break between meetings does something a scroll through email never does, it gives your brain a genuine rest without giving it nothing to do at all. I've written more on why this matters specifically for people running their own business in this piece on casual puzzle games as a break for busy entrepreneurs, and the short answer is that a five minute Sudoku break resets my focus far better than five minutes of checking my phone does.
If you want one place that rounds up offline and online options across every device rather than just iPhone puzzle games, I keep this full guide to free games to play offline and online updated as new ones prove themselves reliable, and it's the page I point people to when they ask me for a general recommendation rather than a specific category.
Frequently asked questions
Are free puzzle games on the App Store offline once downloaded?
Not automatically. Many free puzzle games need a connection just to load the ads that fund them, so the download is free but the gameplay still expects signal. Check recent reviews and test the app in airplane mode before you rely on it.
What is the most reliable free offline puzzle game for iPhone?
Simon Tatham's Puzzle Collection and Flow Free are the two I've had the fewest problems with across repeated airplane mode testing, both because they store all their content locally with no ad network calls at all.
Why do some highly rated puzzle apps still fail offline?
Star ratings are written mostly by people who tested the app while connected to wifi at home, so a five star rating tells you the puzzles are enjoyable, not that the app copes without a signal. Offline reliability and app quality are two separate things.
Do I need to change any settings for offline puzzle games to work ?
Turn off Background App Refresh for the specific puzzle apps you plan to use offline, since some try to check in with a server the moment they sense any connection, which can cause freezing even during brief signal moments like an airport wifi prompt.
