Ergonomics & posture
Phones and tablets encourage closer viewing and smaller radii, which amplify jitter but can sharpen precision. Desktops support larger arcs and better shoulder‑led motion but can tempt wrist‑only shortcuts if the desk is too high. Adjust the setup so your elbow and shoulder can move freely and your wrist stays neutral.
Sampling rate, latency, and feel
Modern styluses and touchscreens sample frequently with low latency, producing a natural feel. Mice rely on cursor acceleration and OS settings—tune pointer precision and reduce acceleration for predictable arcs. Latency matters less than many think; stable pacing and whole‑arm motion dominate perceived smoothness.
Training on phones/tablets
- Zoom slightly and pick a medium radius to reduce visible jitter.
- Add a matte protector for friction; it makes stylus control pencil‑like.
- Use Practice Mode’s dots to ingrain even spacing before dropping supports.
Training on desktops/laptops
- Lift the wrist; move from elbow and shoulder. Consider a desk mat for smoother, more stable motion.
- Lower the chair or raise the surface so the forearm is roughly parallel to the desk.
- Use Grid Glide to keep centering honest across the wider field.
Switching devices to generalize skill
Skill can become context‑locked when all reps happen on one device. Switch devices weekly: tablet → desktop → phone. Keep the same baseline tempo and radius proportions (e.g., 18% of screen width) and compare scores. Expect a small drop on switch days that rebounds within a session.
Two flexible plans (mobile and desktop)
Mobile plan (10–12 min)
- Pacing (3 min) at 2.5–3.0s tempo.
- Center Lock (3 min) with small zoom.
- Closure Blend (3 min) aiming through the start point.
- Exam reps (1–2 min) and log.
Desktop plan (10–12 min)
- Clock Drill (3 min) at medium‑large radius.
- Grid Glide (3 min) for honest centering.
- Mixed Radius (3 min) to build adaptability.
- Exam reps (1–2 min).