Bilateral stimulation tool · EMDR therapists

Free BLS,
for EMDR.

A modern web-based BLS instrument for EMDR therapists. Visual and stereo audio. Completely free. From the team behind Konfidens.

Get started — free See how it works

Live demo · Try the instrument

Try it now. Right here.

Press play, adjust speed, switch shapes. This is the same instrument you get after sign-up — no demo mode, nothing held back.

app.pendle.health/session/demo/therapist

Sessions

Sessiondemo

Client connected

Invite client

End session

Paused0 passes · 00:00

Paused

How a session works

01 / START

Start a session.

Click Start from your dashboard. Share the unique link — Zoom chat, email, or side-by-side. They join in any browser.

02 / RUN

Run the work.

Their screen shows only the stimulus. Yours has the controls. Adjust speed, switch from visual to audio, pause between sets.

03 / WRAP

Hand off the summary.

At the end of the session, copy the auto-generated technique summary straight into your clinical notes.

FIG_02Pendle · v1.0

The instrument, in detail.

Visual stimulation on screen. Stereo audio in headphones. Configurable speed, colour, shape, and pattern. Swap modalities mid-session without breaking the rhythm. Every parameter is logged automatically for your notes.

PSession summary

Pendle logs every set automatically and gives you a copy-paste-ready summary at the end.

Every detail, tuneable.

Visual on screen. Audio in stereo. Speed in BPM. Eight shapes. Any colour. Configure everything without leaving the keyboard.

01 · Stimulus

Any colour. Any shape. Sensible defaults.

Open colour picker — set it to anything. Marigold is the default because it works. Your client sees exactly what you see.

02 · Auditory

Stereo bilateral tones.

220 Hz left, 330 Hz right, panned hard. Headphones recommended.

03 · Shortcuts

Every control, on the keyboard.

Space pauses. Arrow keys nudge speed. No mouse required in the session room.

04 · Shapes

Eight shapes to choose from.

Some clients track a butterfly better than a dot. Swap mid-set; the rhythm doesn't break.

05 · Telehealth

One link per session. Any browser. No download.

Send the link — Zoom chat, email, side-by-side in the room. It works.

06 · Privacy

Opaque client IDs only.

No names. No emails. No clinical content. Ever.

07 · Session log

Auto-logged session notes.

Every set, parameter and switch — captured. Copy at the end, into your own notes.

FIG_03 — Evidence base5 endorsing bodies

Backed by the research.

EMDR is a first-line treatment for PTSD, recommended by every major clinical body. Pendle is built to do the part the research is clearest on — the rhythm itself — without getting in the way.

EMDR is recommended as a first-line treatment for PTSD by the UK's NICE guidelines, the American Psychiatric Association, the US Department of Veterans Affairs, and the World Health Organization.

Multiple meta-analyses of randomised controlled trials have shown significant symptom reductions compared to control conditions (Chen et al., 2014; Cuijpers et al., 2020).

EMDR is effective regardless of modality — eye movements, audio tones, or tactile pulses. What matters is the therapist, the protocol fidelity, and the rhythm itself.

Online and digital delivery has comparable efficacy to in-person delivery (Liou et al., 2022). EMDRIA and EMDR Europe have endorsed digitally-mediated delivery as valid practice.

Pricing

It's free.

Forever. No trial. No card. No paywalled features. A free companion to Konfidens, our practice management platform — but you don't need Konfidens to use Pendle.

Get started — it's free

FIG_04 — From the team behindFamily

Family

Konfidens. Practice management for therapists.

Pendle is a free, standalone companion to Konfidens — a practice management platform for allied health professionals. Scheduling, notes, billing, client management, all in one place.

Learn about Konfidens

FAQ

Common questions.

Both. The session link works in any browser, on any device. Use it side-by-side in the room or share it via Zoom chat.

We don't store any. Pendle uses opaque client IDs only — no names, no emails, no clinical content. The technique summary is yours to copy into your own notes; we don't keep a copy.

For visual BLS, a tablet or laptop is best — phone screens are too narrow for effective eye-tracking. For auditory BLS, any device with headphones works fine.

Functionally, they're equivalent — research has not found one BLS modality superior to another. The practical differences are convenience: Pendle works in any browser, costs nothing, and adapts per client.

No. Pendle is a completely standalone product — you don't need a Konfidens account to use any part of it. Konfidens is a separate practice management platform from the same team, if you ever happen to be looking for one.