History, analysis and account

What do the colors on the muscle-volume map mean?

In Analysis, select Week or Month and examine the front and back body silhouettes. Each colored area compares the recorded workout volume for that muscle group with Grunty's reference targets: None, Low, Partial, On target or Above target. Tap a muscle for more detail when that interaction is available.

Screenshots

App interface screenshots and illustrated Grunty store visuals. Tap an image to enlarge it.

Grunty muscle-volume map in English with front/back silhouettes, colored groups and the volume legend. — Colors compare recorded training volume with in-app reference targets; they do not directly measure muscle growth.

Practical tip

Make sure working sets and exercise variations are logged correctly: this map uses those inputs, not a sensor directly measuring muscle adaptation.

Important / limitations

This does not measure hypertrophy, recovery or injury risk. Colors compare volume with reference targets; they are not a diagnosis.

Content reviewed against source code on October 30, 2026.