Steam Achievement Manager is described as 'A manager for game achievements in Steam' and is an app. There are 2 alternatives to Steam Achievement Manager for Windows and Android. The best Steam Achievement Manager alternative is Idle Daddy, which is both free and Open Source.
Idle Daddy lets you easily unlock your Steam™ Trading Cards using your mobile device. It works by simulating playing the games in your Steam™ library that have trading cards available and waiting for the cards to drop.
This program will determine which of your Steam games still have Steam Trading Card drops remaining, and will go through each application to simulate you being “in-game” so that cards will drop. It will check periodically to see if the game you’re idling has card drops remaining.
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