Free Version

The free version of Smash Hit refers to when the player has not purchased the premium upgrade. It only lets the user play in classic mode, does not show statistics, disables cloud saves, and removes the ability to continue from checkpoints. In addition, a banner button that says "get premium" will appear in the top right corner of the main menu.

Attempting to Start from a Checkpoint
When you try to start from a Checkpoint, the game will prompt you to get premium. If you choose not now, the game rewinds you to the first stage of the Introductory stage. During the effect, the Introductory Stage has nothing in it.

Suppose you rewind from the Checkpoint 2. Because you only pass through the first stage of the Introductory stage, the Checkpoint 2 is joined outside the door outline of the Introductory stage.

Attempting to Change Game Modes
If you try to change Game Modes, then the get premium screen will pop up.

Bug
There is a weird bug, which still shows the "Starting from checkpoints require premium version" screen, and even after you rewind, the screen is still there.
 * When starting the game from the start, the screen is STILL THERE, impeding your ability to throw balls in certain places, since the screen is covering an area of the game. Accidental taps will still trigger the program to rewind, making you lose your progress and have to restart. More info below:
 * Rewinding again, once you have started playing the Introductory stage, will send you back to the start, but in an empty room, starting from the door (again).
 * Rewinding during rewinding will change the layout, and slow down the rewind process.
 * Apparently, having 0 balls at the start of the checkpoint is this , start on the checkpoint with 0 balls , NOTE: make sure you have never been in that checkpoint.... if so then..... have 10 balls or less remaining..... then you have to crash at a door that past the door is a different checkpoint...... just make sure you have never been in that checkpoint.... then , continue from that checkpoint , If you run Out of Balls only if you do the following steps, your distance will be zero (0).

Trivia

 * This is the first game by Mediocre where the free version is in the same app as the paid version; all others before this had a "Free" version on the App Store/Google Play Store and had the paid version as a separate app.
 * You can see Hyperspace in Checkpoint 10, as all the dust is lengthened into streaks. When rewinding, you can see this in the Introductory Stage.