Manage your risks, smarter.

Build interactive bowtie diagrams that map hazards, threats, safeguards, and consequences — with built-in barrier reliability scoring.

Try Bowtie One

Built for safety, reliability, and risk engineering teams.

Built for safety, reliability, and risk

engineering teams.

Built for safety, reliability, and risk engineering teams.

Bowties?

What is Bowtie Risk Analysis?

Bowtie analysis visualizes how hazards lead to incidents and how safeguards reduce risk.

It connects threats, preventive barriers, top events, mitigative barriers, and consequences in a single structured diagram widely used in high-risk industries.

Threat

Events that could trigger the top event.

Controls that prevent threats from causing the top event.

Prevention Barrier

The moment control over the hazard is lost.

Top Event

Safeguards that reduce the severity after the top event occurs.

Mitigation Barrier

Potential outcomes if barriers fail.

Consequence

Productivity Features

Visual Risk Analysis - Without the Spreadsheets.

Build, analyze, and communicate risk using interactive bowtie diagrams and LOPA modeling. Map hazards, threats, safeguards, and consequences in a visual workspace built for real safety and risk engineering.

Visual Bowtie Modeling

Create complete bowtie diagrams on an interactive canvas. Map hazards, threats, consequences, and safeguards with drag-and-drop editing.

Barrier & Safeguard Analysis

Model preventive and mitigative barriers, evaluate their reliability, and track escalation factors that could weaken protection.

Semi-Quantitative LOPA Mode

Switch from visual bowtie diagrams to structured LOPA calculations with initiating frequencies, protection layers, and residual risk.

Critical Risk Management

Clearly identify your key controls to prevent SIF events.

Key Capabilities

Risk modeling built for real safety analysis.

Bowtie One combines visual bowtie diagrams with structured risk calculations so teams can understand hazards, validate safeguards, and communicate risk clearly.

Visual hazard and top-event modeling

Preventive and mitigative safeguard tracking

Semi-quantitative barrier reliability scoring

LOPA-style risk calculations

Barriers

Barrier Reliability Analysis

Evaluate how effective each safeguard actually is. Track ownership, assurance checks, and reliability scoring to identify weak protection layers.

Barriers

Barrier Reliability Analysis

Evaluate how effective each safeguard actually is. Track ownership, assurance checks, and reliability scoring to identify weak protection layers.

Barriers

Barrier Reliability Analysis

Evaluate how effective each safeguard actually is. Track ownership, assurance checks, and reliability scoring to identify weak protection layers.

Clarity at a glance

Clear Risk Pathways

See how hazards lead to incidents. Visualize threats, safeguards, escalation factors, and consequences in one structured bowtie diagram.

Clarity at a glance

Clear Risk Pathways

See how hazards lead to incidents. Visualize threats, safeguards, escalation factors, and consequences in one structured bowtie diagram.

Clarity at a glance

Clear Risk Pathways

See how hazards lead to incidents. Visualize threats, safeguards, escalation factors, and consequences in one structured bowtie diagram.

Stay in sync

Local or Cloud Projects

Free users can build bowties locally with autosave and file export. Paid users unlock secure cloud projects.

Stay in sync

Local or Cloud Projects

Free users can build bowties locally with autosave and file export. Paid users unlock secure cloud projects.

Stay in sync

Local or Cloud Projects

Free users can build bowties locally with autosave and file export. Paid users unlock secure cloud projects.

Work your way

Standard Mode or LOPA Mode

Start with a clear visual bowtie diagram, then switch to semi-quantitative LOPA analysis with initiating frequencies and protection layer calculations.

Work your way

Standard Mode or LOPA Mode

Start with a clear visual bowtie diagram, then switch to semi-quantitative LOPA analysis with initiating frequencies and protection layer calculations.

Work your way

Standard Mode or LOPA Mode

Start with a clear visual bowtie diagram, then switch to semi-quantitative LOPA analysis with initiating frequencies and protection layer calculations.

Performance

Proven to perform.

Behind every risk score is a structured bowtie analysis showing how safeguards reduce risk.

Full Bowtie Risk Modeling

Map hazards, threats, safeguards, and consequences in a structured visual model.

Full Bowtie Risk Modeling

Map hazards, threats, safeguards, and consequences in a structured visual model.

Full Bowtie Risk Modeling

Praised for speed, clarity, and collaboration.

Barrier Reliability Scoring

Evaluate safeguard effectiveness using structured reliability questions.

Barrier Reliability Scoring

Evaluate safeguard effectiveness using structured reliability questions.

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LOPA Calculations

Quantify risk reduction and residual risk using protection layer analysis.

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LOPA Calculations

Quantify risk reduction and residual risk using protection layer analysis.

Have Confidence in your Systems

Structured Risk Analysis Without the Complexity

Bowtie One helps teams move from hazard identification to structured risk evaluation in a single visual workspace.

Built for the end-user

Adapts as work evolves

Visual insights into your risks

Hazard and top-event modeling

Threat and consequence pathways

Preventive and mitigative safeguards

Escalation factors and controls

Semi-quantitative risk scoring

A Plan That Grows With You

Pricing Options

Choose the subscription plan that suits your needs

Monthly

Yearly

Free Plan

£0

Create bowties

Export locally

Import locally

Get Started

Pro Plan

£120

£100

Billed annually

Team Dashboard

Cloud Save

Collaborate with other users

Sort and prioritise projects

Access to templates

Define barrier KPI's

Create Account to Get Started

A Plan That Grows With You

Pricing Options

Choose the subscription plan that suits your needs

Monthly

Yearly

Free Plan

£0

Create bowties

Export locally

Import locally

Get Started

Pro Plan

£10

Billed monthly

Team Dashboard

Cloud Save

Collaborate with other users

Sort and prioritise projects

Access to templates

Define barrier KPI's

Create Account to Get Started

A Plan That Grows With You

Pricing Options

Choose the subscription plan that suits your needs

Monthly

Yearly

Free Plan

£0

Create bowties

Export locally

Import locally

Get Started

Pro Plan

£10

Billed monthly

Team Dashboard

Cloud Save

Collaborate with other users

Sort and prioritise projects

Access to templates

Define barrier KPI's

Create Account to Get Started

Find Your Perfect Fit

Pricing Comparison

Feature

Free

Pro

Create bowties

Import and Export Locally

Cloud Save

Dashboard Access

Collaborate with other users

Add priority tags to projects

Add review dates to bowties

Create custom barrier KPI's

LOPA Calculations

Create assurance questions

Add a "gut-feeling" barrier performance metric

Why Teams Choose Us

Built for risk engineers and safety teams

Bowtie One provides a structured way to visualize hazards, evaluate safeguards, and communicate risk clearly.

Barrier Reliability Scoring

Evaluate safeguard strength using structured scoring questions and reliability estimates.

Barrier Reliability Scoring

Evaluate safeguard strength using structured scoring questions and reliability estimates.

Import, Export, and PDF Reports

Export bowtie diagrams for documentation, safety reviews, and reporting.

Import, Export, and PDF Reports

Export bowtie diagrams for documentation, safety reviews, and reporting.

Cloud Sync

Stay synced—updates auto-load once you're online.

Cloud Sync

Stay synced—updates auto-load once you're online.

Cloud Sync

Stay synced—updates auto-load once you're online.

KPI Tracking

Create KPI's to monitor the controls that maintain barrier effectiveness.

KPI Tracking

Create KPI's to monitor the controls that maintain barrier effectiveness.

Reusable Templates

Start new analyses quickly using industry templates or projects from your workspace.

Reusable Templates

Start new analyses quickly using industry templates or projects from your workspace.

Human-Centered Design

Built for clarity, ease, and real-world user needs and habits.

Human-Centered Design

Built for clarity, ease, and real-world user needs and habits.

Human-Centered Design

Built for clarity, ease, and real-world user needs and habits.

Our Blog

Blog

Insights on safety, risk management, and bowtie analysis.

When a Formula 1 Car Becomes a Vibration Hazard

When a Formula 1 Car Becomes a Vibration Hazard

The tank is filling. Are you watching the gauges?

The tank is filling. Are you watching the gauges?

A guy just climbed a 1,677ft tower with a bag of chalk

A guy just climbed a 1,677ft tower with a bag of chalk

When a Formula 1 Car Becomes a Vibration Hazard

The tank is filling. Are you watching the gauges?

See all

FAQ

Answers to help you get started faster.

Real questions from teams who are new to working with bowties.

What is bowtie risk analysis?

Why would i use a bowtie?

How is this different from drawing a bowtie in PowerPoint?

Is this just a risk assessment?

Why have i never heard of bowties?

How do i try this?

Start building your first bowtie diagram.

Create interactive bowtie diagrams, evaluate safeguards, and understand how risk flows from hazard to consequence.

Start a Bowtie

Start building your first bowtie diagram.

Create interactive bowtie diagrams, evaluate safeguards, and understand how risk flows from hazard to consequence.

Start a Bowtie

Start building your first bowtie diagram.

Create interactive bowtie diagrams, evaluate safeguards, and understand how risk flows from hazard to consequence.

Start a Bowtie