Can I get the “Use Item” achievement in Groove Coaster without paying money?

Question

Taito's Groove Coaster for iOS has an achievement called "Use Item" which you get for simply using an item on a level. Items are expendable powerups that make levels slightly easier.

Items are available for purchase in the Upgrade menu of the game for $0.99 for 10.

Is there any way to acquire an item, thereby allowing the achievement, without buying some in the Upgrade shop?

Answer

No. Many avatars can be unlocked or upgraded by completing levels, but items are only available through in-app purchase.

Check more discussion of this question.

What do the G, L and E avatar attributes mean?

Question

When selecting an avatar, a small descriptive blurb scrolls across the bottom of the screen. At the end of each blurb, three attributes seem to be displayed: G (integer), L (integer) and E (percentage). As far as I can tell, these aren't explained anywhere in-game.

What does each letter stand for, and what effects do these attributes have?

Answer

I discovered the answer to this on the Groove Coaster Facebook page.

When selecting an Avatar, a description of that Avatar is displayed at the bottom of the screen, followed by the letters G, L, and E and some numbers. These letters and the values associated with them signify the special attributes for that Avatar as follows: G (GROOVE): This is the initial amount of GROOVE you begin a stage with. L (LENGTH): This refers to the length of the Groove Gauge. E (EXP): This amount modifies the amount of experience points earned when playing stages.

Check more discussion of this question.