When the target pocket is on the opposite side of the table, the default guideline is rarely long enough to guarantee accuracy.

Many top players slightly tilt their phones to look "down the line" of the cue, similar to how a real pool player leans over the table. Final Verdict

The most "old-school" method involves literally holding a small, transparent plastic ruler against a phone or tablet screen. By aligning the ruler with the game's short guideline, players can see the trajectory across the entire table.

These are third-party apps (common on Android) that draw a digital line over the game. These range from simple static lines to complex "calculator" tools.

Beginners often use rulers as "training wheels" to understand the physics of the game before relying on their eyes. The Controversy: Is it Cheating?

Miniclip (the developer of 8 Ball Pool) has strict policies against third-party software . Using an app that overlays lines can lead to a permanent ban, as the game’s anti-cheat systems can detect many of these "guideline tools."

While a might seem like a quick way to win more coins, it often hinders a player's long-term growth. Relying on a tool prevents you from developing the "intuitive feel" for the game that defines the world's best players. If you do choose to use one, stick to a physical ruler to avoid account flags—but remember, nothing beats the satisfaction of a cross-table bank shot made with pure skill.