
System or otherwise, the easiest and most universal way to uninstall an app is via the Settings app. It's possible to uninstall third-party apps or updates via other avenues, like some launchers or the Play Store, but this method should work on almost all Android devices. Feel free to skip this part if you have a different method you'd prefer to use. Navigating to the Apps section of Settings in Android 8.1 Oreo. Show system apps option in App info list for Android 8.1 Oreo (left), info for a single app (right). You may also need to enable an option to show system apps if the application you'd like rolled back shipped with your phone. In that case, you can typically display those apps via the three-dot menu at the top right of the complete app list page (though they may also be in a separate tab). When you've found the app you want, tap it to enter the App info screen. In the relevant "App info" screen, which should be displayed, you'll want to do two things.
First, select "Force Stop" to ensure the app isn't running while we're messing with it. Once it has stopped, we'll need to determine how to uninstall the current version. For third-party apps, it's as simple as selecting "Uninstall," next to the "Force Stop" button. Follow the simple prompts from there, and the app should be gone. System apps have a slightly different workflow, as they can't be entirely uninstalled. For preinstalled system apps, you'll need to instead select the slightly hidden "Uninstall updates" option in the three-dot menu at the top right. A similar prompt will appear letting you know the factory version will replace the currently installed update, and all data will be removed. Keep in mind: you probably won't be able to roll back to an earlier version of the app than this factory version. Once the app is uninstalled, it's time to re-install the version you want. If only there were some vast, historical repository of almost every Android APK you could want or need for easy installation.
Oh, wait, there is, and it's called APK Mirror. APK Mirror is pretty easy to navigate. Just head over there and search for the app that you need. For example, if you are among those that are still angry about the changes to Snapchat, you can easily find the app listing for Snapchat and pull down the required version (10.22.7.0) to restore that functionality. Some apps also have multiple versions for different architectures and DPIs, so you'll need to do a tiny bit of research to determine which you need. Most modern phones will be arm64. In Oreo, installing from unknown sources is a per-app setting. In some cases, you may need to grant additional permissions, and the version of Android you are running changes how that is handled. In Android 8.0 Oreo this is treated as a per-app permission. Once the version of the app you want is installed, your goal has been reached. However, you will need to keep in mind that subsequent updates are likely to replace the rolled-back version you have installed. It may be a good idea to disable automatic updates to ensure it isn't accidentally replaced. Disabling auto-updates in the Play Store. And that's all there is to it. You should be rolled back onto whatever version you need for a given app.
Send your team a message. Fill in a spreadsheet. Zapier can do the next job for you—all you have to do is check off the task. Not finding an app that fits your task management approach, Or have you tried each of these types of apps, but still want something different, Don't worry: There are hundreds of other apps out there for you. Perhaps a standard to-do list app isn't for you; you need some other way to get things done. Your calendar could double as a way to manage your tasks, listing the most important things you have to do as events—and that'd help keep you from overbooking your schedule. Or, gamify your productivity with apps like Habit RPG (pictured above) that giving you little rewards to encourage you to get things done. If it's more features you're looking for, you might find that a project management app that's great for your personal tasks.