Private beta · For design engineers and AI native teams

High quality UX analysis in minutes.

Drop in a flow and Preflight's specialized UX research engine returns a graded, prioritized report. Catch what your users would, before they do. Built to validate AI generated work before it ships.

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Free during beta. No credit card.

Review / Install conversion flow

Reviewing

Readiness

Needs Review

0/100

Findings3 · ranked by severity

Loading and success states are not visible across the flow

Blockingelement · OAuth callback

Missing error and loading states in critical flow steps

Majorelement · onboarding step 2

Inconsistent button hierarchy across onboarding

Minorelement · Button · steps 4 to 6

Set up once

Tune the engine to your product.

Preflight is not a generic critic. Configure it to your use case, link your design system, and generate the UX artifacts that make every review specific to your users.

Custom evaluation settings

Configure what matters. Set priorities, weights, and the standards your team holds itself to. Make Preflight evaluate the way you would.

Linked design system

Connect your design system so reviews ground in your actual components, tokens, and patterns. Not generic best practices.

AI assisted UX artifact generator

Generate optimized personas, jobs to be done, golden threads, and design principles in minutes. Fill in a sentence and Preflight builds the rest.

What you get back

Not a vibe check. A scored report.

Every review returns the same three things. The insights, the prioritized fixes, and a score that tracks whether your design actually delivers the outcome.

Actionable insights, not a verdict

Every finding comes with the evidence behind it, the impact on your users, and the change that fixes it.

A prioritized fix list ordered by impact

Not a wall of equal weight suggestions. Each fix is ranked by severity, evidence, confidence, and outcome risk.

An outcome confidence score

A standalone score for whether your users will actually achieve their goal, paired with a letter grade for design quality.

Real flows, real reports

Two real reviews, not mockups. This is what lands in your inbox minutes after you submit.

User sign up

2 screens · home screen + sign up modal

C0/100

Needs Review. Issues present, but not blocking.

Blocking

Missing loading, error, and success confirmation states

Users do not know if their action worked. That is the most common cause of repeat submissions and support tickets.

Major

No visible error recovery or prevention in the flow

When something breaks, users have no clear path back. The flow fails silently.

Minor

Accessibility risk. No evidence of keyboard or screen reader support

A meaningful subset of users will not be able to complete the flow.

Headline fix

Add loading, error, and success confirmation states across the entire flow.

See the full report →

Install conversion flow

7 screens · landing, sign up, OAuth, onboarding, install

B0/100

Needs Review. Mostly complete and coherent.

Blocking

Loading and success states are not visible across the flow

After OAuth and onboarding, users get no signal each step succeeded, breaking trust at the highest stakes moment.

Major

Missing error and loading states in critical flow steps

On a network error during install, the user is left with no feedback and no way to recover.

Minor

Inconsistent button hierarchy and labeling across onboarding

Primary and secondary CTAs vary across steps 4 to 6. Users relearn the pattern each step, slowing conversion.

Headline fix

Add explicit loading, error, and success confirmation states across the entire flow.

See the full report →

How it works

Built for the moment the work is real enough to evaluate.

Bring real work and the goal it serves. Preflight handles the rest.

Submit the flow

Paste a URL, Figma frame, screenshot, code snippet, or written flow description. Add the user and the goal they are trying to reach.

Run the structured review

Preflight runs the full evaluation across the flow, not just the screen in front of it.

Fix what matters

Get prioritized findings ranked by severity, confidence, and user impact, with a fix list ordered by what moves the score.

The methodology

The dimensions senior UX leaders apply by hand, now in a tool.

Preflight built a UX review engine on hundreds of insights, methodologies, best practices, laws, and real user input. Consistent. Reliable. Repeatable.

Heuristics

Industry standard heuristic evaluation across every screen, state, and transition in the flow.

UX research benchmarks

Designs are scored against an established set of industry research benchmarks, patterns, and best practices.

Outcome confidence

Understand if users will actually achieve what they came for. Preflight ensures confidence in outcomes, not just surface polish.

Real user context

Evaluated against human centered methodologies, established goals, outcomes, and constraints of the people who need to use the product.

Experience coherence

Understand if the user journeys hold together from start to finish without dropping the user or losing the goal.

Why not just use AI

You could paste this into a chatbot. Here is what comes back.

A general model will always say something. The question is whether you can ship on it. Same flow, two answers.

A general chat model

Improvised answer

Unscored

This looks like a clean, modern sign up flow. The structure is clear and the steps mostly make sense.

You might consider adding a little loading feedback, and double checking your color contrast in a few places.

Overall it is a solid design and most users should get through it without much trouble.

No gradeNothing rankedNew answer next run

Preflight

Structured evaluation

Graded

C65/100

Needs Review

Issues present, ranked and tied to the element.

Blocking

Missing loading, error, and success states

element · sign up modal

Major

No visible error recovery in the flow

element · Submit button

Headline fixAdd explicit loading, error, and success confirmation states before launch.

The same method, every run

A chatbot improvises. Ask twice and you get two answers, ranked by nothing. Preflight runs the same five lenses on every flow.

Grounded, not guessing

A general model works from its own priors. Preflight retrieves from a curated UX research vault and your product context.

Tuned to catch failure

General models skew positive. Preflight is built to warn you, because a gate that flatters you is worse than no gate at all.

Why now

The team that answered does this work is gone.

Three forces are converging right now, and they all land on the same person.

UX research teams are being cut

Hundreds of researchers laid off at Meta, Amazon, Microsoft, and Google in 18 months. Research is the first function pruned, because its ROI is the hardest to attribute.

100sresearchers laid off
UX Research Reckoning, 2025

AI is generating more slop than ever

Teams ship AI generated work at scale. Slop was the 2025 Word of the Year. But Nielsen Norman Group still calls those outputs marginally better.

0%of designers increased AI use
Figma, State of Design 2026

Validation fell to people without the methodology

Design engineers, PMs, solo designers, and founders now own the question does this work for the user? The trained team that used to answer it is gone.

5 to 10xcostlier to fix issues late
Code Climate

You do not need the old team back. You need the check they used to run.

Ready when you have a real flow

Bring one real flow. Get a Preflight review.

Free during beta. No credit card. Start with the flow your team is already worried about.

We review every request by hand. No spam, ever.