Here's your Cyrillic Trace app. Here's what it includes:

• Three modes — uppercase only, lowercase only, or both shuffled together
• Tracing canvas — draw the letter with a mouse, trackpad or finger
• Reference panel — shows the letter plus its transliterated name
• Clear button — wipes the canvas so you can retry the stroke
• Next button — pulls a new random letter and counts your progress
• Letters are reshuffled every round so practice never gets predictable

Tell me if you want anything added — stroke-order guides, a timed drill mode, or audio for each letter name.