Alternative

PIDtoolbox or Easyquadtune? It depends on the question

PIDtoolbox is a serious analysis tool with more knobs than most pilots need. Easyquadtune makes the choices and shows the consequence. Here is the honest split.

You want	Use
Full control over how the step response is computed	PIDtoolbox
A before/after table and a CLI script for three profiles	Easyquadtune
To inspect raw traces frame by frame	Blackbox Explorer
To know whether the log can support a tune at all	Easyquadtune's quality score, or the free guide

What differs in the reading of the same log

A step response is only as good as its normalisation. If each trace is scaled to its own peak, overshoot becomes zero by definition and every axis looks critically damped. Easyquadtune normalises both the setpoint and the gyro by the commanded step size, measures rise from 10 % to 90 %, and settles at ±5 % — which is why its numbers can disagree with a plot normalised the other way. The worked example shows those numbers for a real flight.

What neither tool fixes

A bent prop, a dry bearing, a cracked arm. No analysis of a log repairs hardware, and a tune that hides a mechanical fault usually makes it worse.

Easyquadtune is not affiliated with Betaflight. Published 2026-10-21. Measurements come from the maintainer's own flight logs; an example is illustrative of the method, not a tune for your aircraft.