There are a few existing methods of saving your saves/progress. They are usually used when you are going to renew your subscription soon and you don't want to loose everything you have gained so far. To save progress you can use three tools: Files app and DropBox, iExplorer or iMazing.
In this method you first save your save files into Files app from App store and then you sync it with the DropBox app you installed previously on your iPhone.
First steps have to be made with Files app:
The files you keep in iCloud Drive automatically appear in the Files app, but you need to set up your other cloud services to access them in the Files app too. The Files app lets you add your third-party cloud services - in our case it's DropBox.To add your Dropbox folder to the Files app, download and sign in to the Dropbox iOS app, version 64.3 or later and follow the steps:
If you don't see one of your third-party cloud services in the Files app, check with your cloud provider.
If you don't see On My [device] in your choices, that means you don't have files saved locally in your Keynote, Numbers, or Pages apps. Use these steps to make a copy of your file and save it directly to your iPhone, iPad, or iPod touch:
Access the Dropbox in the Files app. For that:
Tap a file to download and view the file. Most files preview natively on iOS. However, some files may open in another app on your phone or tablet.
Note: To download a file, you need access to Wi-Fi or cellular data. If you need to view a file offline, make the file available offline in the Dropbox iOS app.
Here's how to pull your save data out of an individual app and back them up on your computer. To manually backup and transfer data, we're going to use the free Mac and Windows program iExplorer. You don't need to jailbreak your iPhone to use iExplorer and it's easy to pull data from your iPhone to transfer it to your new device. Here's how to do it.
Note: In most cases, the above method works just fine, but there are a few instances where things get a little muddled
Here's some tips for dealing with those issues.
In some cases two separate versions of an app exist. An iPhone version and a HD iPad version. Despite the separate apps and the fact you have to buy and download them individually, you can usually transfer data between the two. More often than two separate versions is a single Universal version that works on both an iPad and a iPhone as one download. You should have no trouble swapping files this way either.
Not all apps save their files in the Documents folder. If it's data you absolutely have to have, reader Gregory suggests copying the Library folder in addition to the Documents folder. The Library folder is where smaller high scores and other data is often located.
Finally, a lot of modern apps utilize iCloud for their save data or sync to a webapp online. In this case, you have nothing to worry about provided iCloud is properly set up. Unfortunately, this varies from app to app. Some do the syncing automatically, others require you to turn on the feature in a settings menu. Either way, apps still save the data locally and you can grab them with iExplorer.
Download and install iMazing on your Mac or PC computer. First step is to do an editable backup my iMazing. See the instructions:
Note: For iTunes archived backups or older, non iMazing 2 backups, you'll have to right click the backup in the sidebar and choose 'Make editable copy' in the contextual menu.
What to know more about using iMazing:
After these 5 steps edit app files directly in the backup (Apps section in iMazing with the editable backup selected in the sidebar). Once that's done, simply drag and drop the app from the Apps view to your desktop and iMazing will extract it as an .imazingapp file, including all edits. Downside of this approach is that iMazing does limit the number of file system transfers you can do for free, but at 1000 free files, you should be able to do quite a lot without paying a dime.
Some more notes: on non-jailbroken devices, app data can only be pulled from a backup so make sure you have enough space for that. When you restore a .imazingapp file, iMazing may need a backup of the target device too (encryption related reasons). If you're still getting errors, you can drop us a line via iMazing's Feedback menu and we'll get back to you pretty quickly.