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Category of 1 — By The Charles Linden Institute

ANXAPP

The world's only science and evidence-based anxiety predisposition diagnostic.

For every CEO. Every employee. Every child. Every person on earth.

Built on 30 years of research and 180,000+ resolved cases, ANXAPP is a category of one — the only tool of its kind on earth, created by the only person qualified to create it.

ANXAPP mobile application screenshot

Private & Anonymous

No data sharing. No clinical records.

10–12 Minutes

60 targeted questions. No wrong answers.

For Any Age

Adults and children (with adult guidance).

Category of 1 — Globally

There is no second place in this category.
Because no second place exists.

No university, pharmaceutical company, or technology platform has produced an anxiety predisposition diagnostic — because none possess what Charles Linden possesses: 30 unbroken years of resolved clinical experience with over 180,000 people across every culture, age group, and background on earth.

301M+

People globally living with anxiety conditions right now — none of whom were told in advance they were at risk.

WHO Global Mental Health Report

180,000+

Resolved cases underpinning ANXAPP's science — the largest direct-practice anxiety dataset on earth.

Charles Linden Institute, 1996–present

0

Other tools on earth capable of identifying your personal anxiety predisposition before a disorder develops.

Category of 1 — Verified globally

For Leaders & Organisations

ANXAPP identifies which of your people are quietly at risk before performance, attendance, or safety is compromised. That knowledge is not available anywhere else on earth.

For Individuals & Families

Whether you're a worried parent, a young adult, or simply someone who wants to know their own mind — ANXAPP offers the only honest, science-backed answer that exists. Ten minutes. One score. A lifetime of clarity.

What ANXAPP Does

Identify. Prevent. Recover.

ANXAPP is not a mood tracker, a breathing app, or a chatbot. It is a science and evidence-based tool built on 30 years of direct practice — the only application capable of identifying genuine anxiety condition risk before one develops.

1

The Assessment

A 60-question assessment built on the neuroscience of the anxiety response — targeting the stable personality traits and behavioural patterns that determine long-term vulnerability, not how you feel today.

2

The Score

A percentage score across five predisposition bands — Minimal to Very High — giving a clear, honest picture of individual risk. Not a clinical diagnosis; a scientifically grounded measure of the conditions that precede anxiety condition onset.

3

The Pathway

ANXAPP connects predisposition insight directly to TRT — the world's most proven anxiety recovery programme with 650,000+ full recoveries. It identifies the predisposition, implements prevention, and makes recovery available.

Conditions Tested For

Accurate Assessment Across the Full Anxiety Spectrum

ANXAPP assesses predisposition across all anxiety conditions — built on 30 years of research, testing and experience in psychology and psycho-educational practice.

Generalised Anxiety DisorderPanic DisorderPanic AttacksPTSDPostnatal AnxietyDerealisationDepersonalisationAgoraphobiaSocial AnxietyOCDHOCDPOCDROCD (Religious)ROCD (Relationship)MonophobiaEmetophobiaHealth AnxietyPure-OEating Disorders

Your Result

A Score That Could Change the Direction of Your Life

When you complete the ANXAPP assessment, you receive something no GP, therapist, or mental health platform has ever been able to offer you: a precise, honest measure of your personal predisposition to developing an anxiety condition — produced before one has taken hold.

Your score is expressed as a clear percentage, placing you within one of five predisposition bands — from Minimal through to Very High. Each band is not a label or a diagnosis. It is a scientifically grounded picture of the neurological and behavioural conditions inside you right now, and how likely they are — if left unaddressed — to produce an anxiety condition at some point in your life.

This is not how you feel today. This is not a mood questionnaire. It is a deep, stable read of the traits and patterns you carry — many of which you may have lived with so long you have never noticed them at all. ANXAPP surfaces them, names them, and quantifies them, so that for the first time you have genuine, actionable intelligence about your own risk.

"Most people discover their anxiety predisposition only after a disorder has already developed. ANXAPP changes that."

— Charles Linden, Founder, The Charles Linden Institute

If your score is low, that is genuinely reassuring knowledge — and knowledge that has real value for your mental health, your relationships and your working life. If your score is elevated, it is not a sentence. It is an early warning that gives you the rarest possible gift in mental health: time to act before a disorder begins. And if a disorder has already developed, your score tells you exactly how deep the predisposition runs — and precisely what level of engagement with TRT Therapy will produce a full recovery.

Every result, regardless of band, connects you directly to the appropriate level of support within TRT Therapy and the Linden Recovery Programme — the world's most proven anxiety recovery pathway, with over 650,000 full, documented recoveries. Your score is not the end of the process. It is the beginning of it.

Who It Serves

One Tool. Every Person. Every Sector. Every Stage of Life.

ANXAPP does not belong to one demographic, one industry or one moment in life. It belongs to every person who has ever wondered why anxiety feels closer for them than for others — and every organisation responsible for the wellbeing of the people in their care. There is no situation where knowing your anxiety predisposition is not a life-changing advantage.

CEOs, Executives & Senior Leaders

Many leaders carry an undiagnosed predisposition they have never had language for. ANXAPP provides a precise measure of neurological anxiety risk and a direct path to eliminate it — so performance and clarity are never quietly compromised.

Every Workplace & Every Workforce

Anxiety disorders cost UK employers over £28 billion a year. ANXAPP identifies vulnerability before it becomes absence or breakdown — the only predictive tool that exists. Preventative, at source.

Children, Young Adults & Their Families

Anxiety disorders overwhelmingly begin before age 21. ANXAPP provides a clear, private assessment and a route to full resolution — before a disorder defines a young person's education, relationships, or life.

Every Individual — Regardless of Background

No referral, diagnosis, or symptoms required. Ten minutes. One score. A guaranteed path forward — private, anonymous, and life-changing.

Why Nothing Else Exists Like This

30 Years of Direct Practice Cannot Be Replicated

ANXAPP was built on 180,000+ resolved cases and three decades of unbroken observation — refined across every culture and healthcare system. No university, pharmaceutical company, or mental health technology platform has produced a comparable tool, because none possesses the longitudinal clinical depth required to build one.

The assessment identifies not current symptoms, but the stable neurological and behavioural architecture that precedes anxiety condition onset. It is the only technology on earth capable of answering the question that matters most: is this person at genuine risk of developing an anxiety condition?

And unlike any other mental health tool, the score does not stand alone. Every result connects directly to TRT Therapy — the Linden Method — with over 650,000 documented full recoveries. Identify the predisposition. Implement prevention. Access recovery. Outcomes guaranteed.

The world's first science and evidence-based anxiety predisposition diagnostic
Built on 30 years of longitudinal research and 180,000+ resolved cases
60-question assessment targeting stable vulnerability traits — not current mood
Five predisposition bands with clear, actionable results
Directly connected to TRT Therapy — 650,000+ full global recoveries
Private, anonymous and available for any age
Non-clinical — no diagnostic label, no clinical governance required
Deployable for individuals, employers, institutions and healthcare systems

Category of 1 — The Only Tool of Its Kind on Earth

Ten Minutes.
One Score.
The Rest of Your Life — Changed.

No other assessment on earth can tell you what ANXAPP tells you. No GP, no therapist, no app, no hospital. Only ANXAPP — and only now, for the first time in history, is that knowledge available to everyone.

CEO or child. Professional or parent. Worried or simply curious. ANXAPP is for you. Take the assessment, receive your score, and access the world's most proven anxiety recovery programme — with guaranteed outcomes.

Private & anonymous · 10–12 minutes · No wrong answers · For any age

1,000s of Testimonials — Proof That Linden Recovery & TRT Therapy Delivers Permanent Recovery
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Testimonial

"Just a note to anyone thinking of buying this product — It does work! I had all the symptoms including chronic muscle pain, racing heart, horrid thoughts, OC…"

Robert K.

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Testimonial

"I just wanted to thank you personally, Charles, for your method! After only 5 weeks I have my life back. I never thought I'd feel OK again — I thought my lif…"

Gill H.

Testimonial
Testimonial

"I owe my life to Charles Linden. He was like an angel that came into my life and made me believe that I can get rid of my anxiety. I love this man with all m…"

Rey

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Testimonial

"Just wanna say a quick thanks... You've made sense of it all now and I'm working with your pack every day. Worth every penny. The world's a better place with…"

Richard S.

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Julie G.

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Bill S.

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Dr. Branko M., MD, MS — Serbia

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Rob K.

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Kezia B.

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Isabelle R.

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Brad H.

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Jennifer M.

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Danejla K.

Testimonial
Testimonial

"This method works! Don't bother with all the other therapies out there that promise to work and cost a fortune. Mr Linden, you rock! I wish I had found the m…"

Lisa K.

Testimonial
Testimonial

"I bought the method about 18 months ago. Right now I feel free of anxiety and panic attacks. Thank you."

Elizabeth P.

Testimonial
Testimonial

"I've been doing Linden Recovery & TRT Therapy for 2 weeks and oh my God — the difference! I was sat in the car today and had an attack and it just washed ove…"

Caz P.

Testimonial
Testimonial

"Linden Recovery & TRT Therapy changed my life. I suffered for years with panic attacks and anxiety. Within weeks of starting the programme I was a different …"

Mark T.

Testimonial
Testimonial

"I've tried CBT, medication, hypnotherapy — nothing worked until Linden Recovery & TRT Therapy. The science behind it finally made sense of what was happening…"

Sarah W.

Testimonial
Testimonial

"Charles Linden is a genius. Simple as that. He understood what was happening in my brain when no doctor or therapist could explain it. His method gave me my …"

David H.

Testimonial
Testimonial

"I was housebound for three years with agoraphobia and severe anxiety. Linden Recovery & TRT Therapy got me out of the house, back to work, and living life ag…"

Angela M.

Testimonial
Testimonial

"My daughter was suffering terribly with anxiety at age 16. Within six weeks of Linden Recovery & TRT Therapy she was back at school, socialising, and laughin…"

Louise B.

Testimonial
Testimonial

"I was sceptical — very sceptical. But after six months of conventional therapy going nowhere, I tried Linden Recovery & TRT Therapy. Three months later I can…"

James F.

Testimonial
Testimonial

"Linden Recovery & TRT Therapy is the only anxiety treatment that actually addresses the cause rather than the symptoms. Everything else I tried just masked t…"

Karen S.

Testimonial
Testimonial

"I've recommended Linden Recovery & TRT Therapy to everyone I know who struggles with anxiety. The results speak for themselves. Charles Linden has done somet…"

Michael O.

Testimonial
Testimonial

"After years of CBT and medication I thought I would never be free. Linden Recovery & TRT Therapy showed me how to actually switch off the anxiety at its sour…"

Patricia G.

Testimonial
Testimonial

"I work as a nurse and see anxiety patients every day. I recommend Linden Recovery & TRT Therapy to every single one of them. The neurological explanation is …"

Susan T., RN

Testimonial
Testimonial

"Charles — you saved my marriage. My anxiety was destroying everything. Linden Recovery & TRT Therapy turned everything around in a matter of weeks. My husban…"

Claire R.

Testimonial
Testimonial

"I had panic disorder so severe I couldn't drive. After Linden Recovery & TRT Therapy I drove to Scotland from London — alone. That's the power of this progra…"

Tony W.

Testimonial
Testimonial

"The simplicity of Linden Recovery & TRT Therapy is what makes it so powerful. No complicated techniques, no pills, no side effects. Just a clear, logical pat…"

Fiona K.

"I cried when I read the testimonials on Linden Recovery & TRT Therapy website because I thought — finally, someone who understands. Charles Linden understand…"

Rachel H.

"My anxiety had become so bad I'd stopped eating properly, stopped seeing friends, and barely left my room. Linden Recovery & TRT Therapy brought me back to m…"

Emily S.

"I've battled health anxiety for 20 years. Tried everything. Linden Recovery & TRT Therapy is the first and only thing that has actually resolved it. I genuin…"

Graham L.

"Intrusive thoughts had ruined my life for 15 years. Linden Recovery & TRT Therapy explained why they happen and, more importantly, how to stop them. I wish I…"

Nicola P.

"Social anxiety had left me isolated and unemployed. After Linden Recovery & TRT Therapy, I got a job, made friends, and started dating. My life has completel…"

Dan K.

"My son was suffering with OCD and anxiety at age 12. The child-appropriate version of Linden Recovery & TRT Therapy was incredible. He's been symptom-free fo…"

Helen W.

"I flew long-haul for the first time in 11 years after completing Linden Recovery & TRT Therapy. I actually enjoyed the flight. I cannot describe how impossib…"

Andrew B.

"The explanation of the fear response system and how anxiety perpetuates itself was the lightbulb moment I needed. Once I understood the mechanism, Linden Rec…"

Dr. Jane M.

"Every penny spent on Linden Recovery & TRT Therapy was worth it. I've spent tens of thousands on therapy over 10 years with no lasting result. Linden Recover…"

Peter C.

"I thought I was broken beyond repair. My anxiety was with me every waking moment for seven years. Linden Recovery & TRT Therapy proved me wrong — and I am de…"

Tracey L.

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