Nearly Flawless

Pros: - beautiful app
- tone pitch dial
- wavelengths aesthetics
- autopilot
- sleep timer (GREAT for W.I.L.D.)
- Free
- in-app volume
- plays over videos and music
- live frequency editor

Cons: - Could use isochronic tone add-ons
- Needs a quadratic decreasing/increasing autopilot

DBoyjoshua about Binaural Beats